TYM

WORKSHOP MANUAL

FOR

TRACTORS

(T433/T503/T553)

#604-9, Namsan-dong, Changwon-city, Kyungnam, Korea

■■■■TEL:82-55-279-4379, FAX:82-55-279-4447■■■■www.tym.co.kr

TRACTORS

T433/T503/T553

workshop manual

Chapter 1. Introduction ------------------------------------

Chapter 2. Disassembly and reassembly of major point -----

Chapter 3. Engine accessories -----------------------------------

Chapter 4. Clutch system ------------------------------------------

Chapter 5. Transmission ------------------------------------

Chapter 6. Front axle (4WD) ----------------------------------

Chapter 8. Power steering system--------------------------------

Chapter 9. Hydraulic system --------------------------------------

Chapter 10. Electric accessories and instruments -----------

Chapter 11. Cabin ---------------------------------------------------

Chapter 12. Service standard and other information --------

Chapter 13. Conversion table--------------------------------------

01

02

03

04

05

06

08

09

10

11

12

13

Chapter 1

Introduction

INTRODUCTION----------------------------------------------------------

1-1

SAFETY INTRODUCTION----------------------------------------------

1-2

WARNING SIGNS IN THIS MANUAL -------------------------------

1-4

SAFETY SIGNS ------------------------------------------------------------

1-5

SAFETY DECALS --------------------------------------------------------

1-10

UNIVERSAL SYMBOLS -----------------------------------------------

1-14

SECTION 1. TRACTOR TYPES AND PUNCHED

IDENTIFICATION MARKS -----------------------

1-15

SECTION 2. SPECIFICATIONS---------------------------------------

1-17

SECTION 3. GEAR TRAIN DIAGRAMS----------------------------

1-20

SECTION 4. PRECAUTIONS FOR TRACTOR OPERATIONS

1-21

01

1. INSTRUMENTS ----------------------------------------------------

1-21

2. CONTROLS ---------------------------------------------------------

1-23

3. FILLING DIAGRAM AND CAPACITY TABLE-------------

1-24

4. MAINTENANCE CHART -----------------------------------------

1-25

Chapter 1 .Introduction

This tractor workshop manual is for qualified service personnel engaged in servicing and overhauling T433/T503/T553 tractor.Use of this publication is not recommended for field operators since they usually do not have access to special tools and shop equipment essential for most servicing.

Servicing procedures outlined herein contain sufficient information to return all component parts of a tractor to new condition. In discussion of each component parts,it is assumed that a complete overhaul is been performed,consequently, complete disassembly and reassembly are outlined.The mechanic is relied upon to decide how far disassembly must be carried when complete overhaul is not required.

Study unfamiliar service procedures thoroughly and clearly understood before attempting disassembly. Specific data essential for proper overhaul,such as running clearances and torque values,have been provided in interline of Inspection and reassembly procedures of each group section.

Manufacturer reserves the right to make changes at any time without notice.

Whenever the terms "left"and "right" are used, They means as viewed by the operator when seated in the operator's seat.

1-1

SAFETY INSTRUCTION

ALWAYS PRACTICE SAFETY BY THINKING BEFORE ACTION AVOID FIRE HAZARDS.

-Keep fire extinguishers easily available and in good operating condition.

All relevant personnel should know how to operate fire fighting equipment.

-Keep a first aid kit in an easily accessible location.

-Do not smoke while handling fuel,or other highly flammable material.

-Do not use an open pail for transporting fuel.

-Use of an approved fuel container.

-Dispose of all fuel-soaked rags in covered containers where cigarettes cannot be dropped carelessly.

-Do not smoke and avoid open flame when charging,jumping,or boosting batteries.

-Batteries give off gas which is flammable and explosive.

-Do not charge batteries in a closed area. Provide proper ventilation to avoid explosion of accumulated gases. Avoid acid burns.

-Wear safety goggles when handling battery electrolyte.It contains sulfuric acid which is a poison and can cause blindness.Avoid it contacting eyes,skin,or clothing. sulfuric acid will eat through

AVOID HIGH-PRESSURE FLUIDS

1) Before beginning work on hydraulic system components,turn off engine and operate hydraulic control levers to relieve internal hydraulic pressure.

2) Oil under pressure can penetrate skin and lead to personal injury.Treat sources of oil pressure with extreme care,wearing safety goggles.

3) If hydraulic leak develops,correct immediately.Escaping hydraulic oil can have extremely high pressure. A stream of high pressure oil may easily penetrate skin just like modern needless vaccination equipment,but with the exception that hydraulic fluid may cause blood poisoning.

It is imperative that connections are tight and that all lines and pipes should be in good condition.

If injured by escaping hydraulic fluid,see a doctor at once.

1-2

STAY CLEAR OF PTO

1) Entanglement in rotating drive line can cause serious injury or death.

2) Keep tractor master shield and drive line shield in place at all times except for special applications as directed in the implement operator's manual.

3) Wear fairly tight tight fitting clothing.Stop the engine and be sure PTO driveline is stopped before making adjustment,connections,or cleaning out PTO drive equipment.

SERVICE TIRES SAFELY

Tire changing can be dangerous and should be done by trained personnel using proper tools and equipment.

Do not re-inflate a tire that has been run flat or seriously under-inflated.Have it checked by qualified personnel.

1-3

WARNING SIGNS IN THIS MANUAL

The following warning symbols in this manual draw additional attention to items of importance for the safe and correct operation of the tractor.

SIGN MEANING OF SIGN

Serious hazard with a very high level of risk of either serious injury or death

DANGER

Hazard or unsafe practice that can lead to severe injury or death.

WARNING

Hazard or unsafe practice that can lead in injury or death.

IMPORTANT

Instructions for the correct operation of the machine which, if followed, will ensure that it performs at it’s best

1-4

SAFETY SIGNS

RECOGNIZE SAFETY INFORMATION

This symbol, Safety-Alert Symbol, means ATTENTION!

YOUR

SAFETY IS INVOLVED.

The message that follows the symbol contains important information about safety. Carefully read the message

SIGNAL WORDS.

A signal word―DANGER, WARNING OR CAUTION―is used with safety alert symbol.

DANGER identifies the most serious hazards. Safety signs with signal Word ―DANGER OR WARNING―are typically near specific hazards. General precautions are listed on CAUTION safety signs.

READ SAFETY INSTRUCTION

Carefully read all safety instructions given in this manual for your injuries or death. Keep all safety signs in good condition. Replace missing or damaged safety signs.

Keep your tractor in proper condition and do not allow any unauthorized modifications to be carried out on the Tractor, which may impair the function/safety and affect Tractor life.

PROTECTION CHILDREN

Keep children and others away from the Tractor while operating.

BEFORE YOU REVERSE

- Look behind Tractor for children.

- Do not let children to ride on Tractor or any implement.

DANGER

WARNING

CAUTION

1-5

USE OF ROPS AND SEAT BELT

The Roll over Protection Structure (ROPS) has been certified to industry and/or government standards. Any damage or alternation to the ROPS, mounting hardware, or seat belt voids the certification and will reduce or eliminate protection for the operator in the event of a roll-over. The ROPS, mounting hardware, and seat belt should be checked every service for any evidence of damage, wear or cracks. In the event of damage or alteration, the ROPS must be replaced prior to further operation of the Tractor.

The seat belt must be worn during machine operation when the machine is equipped with a certified ROPS.

Failure to do so will reduce or eliminate protection for the operator in the event of a roll-over.

PRECAUTION TO AVOID TIPPING

Do not drive where the Tractor could slip or tip.

Stay alert for holes and rocks in the terrain, and other hidden hazards.

Slow down before you make a sharp turn.

Driving forward out of a ditch or mired condition could cause Tractor

PARK TRACTOR SAFELY

Before working on the Tractor ;

Lower all equipment to the ground.

Stop the engine and remove the key

KEEP RIDERS OFF TRACTOR

Do not allow riders on the Tractor.

Riders on Tractor are subject to injury such as being stuck by foreign objects and being thrown off of the Tractor

1-6

HANDLE FUEL SAFELY-AVOID FIRES

Handle fuel with care; it is highly flammable. Do not refuel the

Tractor while smoking or near open flame or sparks.

Always stop engine before refueling Tractors.

Always keep your tractor clean of accumulated grease, and debris.

Always clean up spilled fuel.

STAY CLEAR OF ROTATING SHAFTS

Entanglement in rotating shaft can cause serious injury or death.

Keep PTO shield in place at all times.

Wear close fitting clothing. Stop the engine and be sure PTO drive is stopped before making adjustments, connections, or cleaning out PTO driven equipment.

ALWAYS USE SAFETY LIGHTS AND DEVICES

Use of hazard warning lights and turn signals are recommended when towing equipment on public roads unless prohibited by state or local regulations.

during both day & night time, unless prohibited by law

PRACTICE SAFE MAINTENANCE

Understand service procedures before doing work. Keep the surrounding area of the Tractor clean and dry. Do not attempt to service the Tractor when it is in motion. Keep body and clothing away from rotating shafts. Always lower equipment to the ground. Stop the engine. Remove the key. Let the tractor cool before any repair work is done on it. Securely support any Tractor elements that must be raised for service work.

Keep all parts in good condition and properly installed. Replace worn or broken parts. Replace damage/missing decals. Remove any buildup of grease or oil from the Tractor.

Disconnect the battery ground cable (-) before making adjustments on electrical systems or welding on the Tractor.

1-7

AVOID HIGH-PRESSURE FLUIDS

Escaping fluid under pressure can penetrate the skin causing serious injury. Keep hands and body away from pinholes and nozzles, which eject fluids under high pressure. If ANY fluid is injected into the skin.

Consult your doctor immediately.

PREVENT BATTERY EXPLOSIONS

Keep sparks, lighted matches, and open flame away from the top of the battery. Battery gas can explode.

Never check battery charge level by placing a metal object across the poles.

PREVENT ACID BURNS

Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, cause holes in clothing and cause blindness if found entry into eyes.

1.Fill batteries in a well-ventilated area.

2.Wear eye protection and acid proof hand gloves

3. Avoid breathing direct fumes when electrolyte is added.

4. Do not add water to electrolyte as it may splash off causing severe burns.

If you spill acid on yourself;

1.Flush your skin with water.

2.Flush your eyes with water for 10-15 minutes.

Get medical attention immediately.

SERVICE TRACTOR SAFELY

Do not wear a necktie, scarf or loose clothing when you work near moving parts. If these items were to get caught, severe injury could result.

Remove rings and other jeweler to prevent electrical shorts and entanglement in moving parts.

1-8

WORK IN VENTILATED AREA

Do not start the Tractor in an enclosed building unless the doors & windows are open for proper ventilation, as tractor fumes can cause sickness or death. If it is necessary to run an engine in an enclosed area remove the exhaust fumes by connecting an exhaust pipe extension which vents the fumes outside the enclosed area.

Using external control

Stand well clear of the rear linkage and implements when using the hitch remote switches or injury can result from moving parts.

TRACTOR RUNAWAY

1 .The Tractor can start even if the transmission is in the engaged position causing the Tractor to runaway and cause serious injury to the people standing nearby the tractor.

2 .For additional safety keep the pull to stop knob (were fitted)(fuel shut off control) in fully pulled out position. Transmission in neutral position Foot brake engaged and PTO lever in

Tractor.

SAFETY STARTER SWITCH

1. Clutch operated safety switch is provided on all Tractors which allow the starting system to become operational only when the Clutch pedal is fully pressed.

2. Do not By-pass this safety starter switch or work on it. Only Authorized Dealers are recommended to work on safety starter switch.

3. On some models Safety Starter switch is provided on transmission High-low shifter lever and in PTO shifter lever.The tractor can be started only if High-low shifter lever is in neutral position.

Caution

Safety Starter Switch is to be replaced after every 2000 hours/4 years, whichever is earlier

1-9

SAFETY DECALS

The following safety decals ARE INSTALLED ON THE MACHINE.

If a decal become damaged, illegible or is on the machine, replace it. The decal part number is listed in the parts lists

DECALS ON THE DASH COVER

Part No.:1200-910-002-0

Part No.:1260-904-062-0

Part No.:1200-910-008-0

Part No.:1200-910-021-0

1-10

Part No.: 1200-910-007-0

DECALS ON THE CABIN

Part No.:1200-910-023-0

Part No.:1200-910-003-0 Part No.:1200-910-011-0

Part No.:1769-910-009-0

Part No.:1200-910-006-0

Part No.:1200-910-004-0

1-11

DECALS ON THE CABIN

Part No.:1200-910-015-0

Part No.:1200-910-012-0

Part No.:1200-910-024-0

Part No.:1200-910-013-0

Part No.:1200-910-011-0

Part No.:1220-904-122-1

Part No.:1200-910-001-0

Part No.:1200-910-016-

0

Part No.:1769-910-009-0

1-12

UNIVERSAL SYMBOLS

Some of the universal symbols have been shown below with an indication of their meaning

Engine speed rev/minX100)

Hours, recorded

Engine coolant temperature

Fuel level

Engine control

Lights

Horn

Engine oil pressure

Air filter

Battery charge

Pressuredopen slowly

Continuous variable

Warning

Hazard warning

Fan

Power take off engaged

Power take off

Disengaged

Lift arm/raise

Lift arm/lower

1-13

Corrosive substance

”Tortoise”

Slow or minimum Setting

”Hare” fast or maximum setting

Transmission oil pressure

Transmission oil temperature parking brake

Work lamps

Differential lock

See operator’s manual

SECTION 1. TRACTOR TYPES AND PUNCHED IDENTIFICATION MARKS

The engine number is stamped on the left hand side of the engine block.

The chassis number is shown on the right hand side of the tractor as shown in the drawing.

Stamped position of the Engine type Number

Stamped position of the chassis number

1. MODEL NAME PLATE

The plate indicates the model and type of the tractor.

① Model name

② Production I.D No.

The production I.D reference number is as shown below

50ST B 01 0001

Production serial No

Production month

Production year

Production Model

1-14

Illustration A

2. Engine Model Identification and serial number location

1-15

SPECIFICATIONS

Model: T433/T503/T553

ENGINE

Four strokes, Indirect injection, water-cooled

Diesel Engine.

Model : 404D22 (C2.2)

No. of cylinders : 4

Displacement : 2,216 Liters

Bore : 84mm (3.3 in)

Stroke : 100mm (3.9 in)

Compression Ratio : 22.4:1

Rated power (PS) : T433 - 42/2600 rpm

T503 - 50/2800 rpm

T553 – 54/2600 rpm

(Manufacturing rating)

Rated Speed : 2800 rpm

High idle rpm : 3,000

±15 RPM

Low idle rpm : 800 ~ 1400 RPM

Fuel injection pump : BOSCH.

Cylinder sleeve : -

Air Cleaner : Dry Filter element, paper element filtering type.

Exhaust Muffler : Horizontal External type

CLUTCH

Type

: Diaphragm

Outer dia. X Inner dia. : Ф 260XФ180

TRANSMISSION

Type : synchro mesh

No. of gears :16 forward,

POWER TAKE OFF

16 reverse speeds with high and low selection lever with

Differential Lock

STEERING : Hydraulic power

(Power steering)

Rear mounted : 6 splines

Diameter : 1⅜ in.(35mm)

Standard PTO :

①540 ②1000 (Optional)

BRAKES

Foot operated, independent with provision of inter lock for simultaneous operation. A foot brake is fitted for parking.

Accelerator : Hand & Foot Accelerator

ELECTRICAL STARTING AND LIGHTING

Battery Capacity : 12 Volt 80AH

Starter : Solenoid Engaged.

Key Start with interlock,

Neutral switch

Alternator : 12V 65A

Instrumentation : Water Temperature Gauge,

Taco meter, Hour meter,

Electrical fuel level gauge.

Number of lining :4 each side

Total brake thickness : 21.1

㎜(in.)

HYDRAULIC SYSTEM

Independent fully”Live”hydraulic pump and separate reservoir.Position controls with isolating & response control

Piston and cylinder Lift

(at lower link top end)

Pump output :

1503 kgf

Efficiency of 91 % at 2600 rpm

Lighting: Head lamps, side indicators,

Rear parking brake

& indicator light

On dash board indicators for battery charging, turn signal, PTO signal, Engine oil pressure, Preheat signal.

Main : 19.0 cc/rev ( 30.5 ℓ/min)

Power Steering : 10.0 cc/rev .16.0 ℓ/min)

Delivery(91% efficiency) : liter(cu.in)mm at

2600rpm

3 point linkage : USA -Category 1

EU-Category 2 adjustable outside stabilizer

1-16

►►►►

MAIN SPECIFICATIONS

MODEL

Engine Maker

Model

Type

Out put (ps/rpm)

Number of Cylinder

Displacement(cc)

Bore and Stroke

Compression ratio

Firing order

Injection pump

Lubrication type

Cooling system

Coolant capacity

Air cleaner

Electrical

Drive Train

Fuel

Fuel Tank capacity

Battery

Starting system

Starter Capacity

Alternator

Transmission

MFWD(4WD)

Differential lock

Brakes

Steering

T433/T503/T553

CATERPILLAR

404D22 (C2.2)

Water cooled 4 cycle 4 cylinder diesel turbo charged

T433 - 42/2600 rpm

T503 - 50/2800 rpm

T553 - 54/2600 rpm

4

2,219

84X100 mm

23.3:1

1-3-4-2

Indirect

Forced circulation

Water cooled,Forced circulation

8.5

ℓ

Dry Single Element

Diesel fuel

60ℓ(15.85 US gal)

12V80AH

Starter motor with pre-heater

2.0KW

12V 65A

Constant mesh(Synchromeshed 3 rd and 4 th shift in both forward and reverse) in main

Standard

Bevel gears with diff-Lock

Wet disc,mechanical hydraulic

1-17

Clutch

Dimensions

MODEL

T433/T503

Axle type

Main

PTO

Overall length(mm)

Overall width (mm)

Overall Height (mm)

Wheel base (mm)

(Distance between shafts)

Min. Ground Clearance (mm)

T553

CABIN

Front

Rear

T553

ROLL-BAR

Front

Rear

Front

Rear

Front

Rear

Implement Operation

Mounting method

Drawing method

3-Point hitch category

Hydraulic-control

T433/T503/T553

Dry single disc,mechanic

Multiple wet disk

3,500 (137.8”)

1,740 (68.5”)

2,500 (98.4”)

1,935 (76.2”)

350 (13.8”)

9.5-18-8PR (39.8 PSI)

13.6-28-6PR (22.6 PSI)

9.5-16-6PR (29.9PSI)

13.6-26-6PR (21.3 PSI)

8-16-4PR (22.76 PSI)

13.6-24-6PR (22.76 PSI)

Center pin

Central axle

Hydraulic

3-Point hitch

Trailer hitch

Category 1

Position ,draft control

1-18

Range shift

LL

L

M

MODEL

Traveling Speed : Km/hour (mile/hour)

T433/T503

Main shift

1

2

3

3

4

1

2

4

1

2

2

3

4

1

Forward

0.61 (0.38)

0.80 (0.50)

1.23 (0.76)

1.45 (0.90)

1.72 (1.07)

2.29 (1.42)

3.49 (2.17)

4.12 (2.56)

3.60 (2.24)

4.78 (2.97)

7.30 (4.54)

8.61 (5.35)

11.41 (7.09)

15.14 (9.41)

Reverse

0.51 (0.32)

0.68 (0.42)

1.04 (0.65)

1.22 (0.76)

1.45 (0.90)

1.93 (1.20)

2.94 (1.83)

3.47 (2.16)

3.04 (1.89)

4.03 (2.51)

6.15 (3.82)

7.26 (4.51)

9.62 (5.98)

12.76 (7.93)

22.99 (14.29)

4

27.27 (16.94)

*The specifications are subject to change for improvement without notice.

1-19

Range shift

LL

L

M

MODEL

Traveling Speed : Km/hour (mile/hour)

T553 ROLL-BAR

Main shift Forward Reverse

1

2

3

3

4

1

2

0.65 (0.40)

0.87 (0.54)

1.32 (0.82)

1.56 (0.97)

1.86 (1.16)

2.46 (1.53)

3.76 (2.34)

0.55 (0.34)

0.73 (0.45)

1.11 (0.69)

1.32 (0.82)

1.57 (0.98)

2.08 (1.29)

3.17 (1.97)

4

1

2

2

3

4

1

4.44 (2.76)

3.88 (2.41)

5.15 (3.20)

7.86 (4.89)

9.27 (5.76)

12.29 (7.64)

16.30 (10.13)

3.74 (2.32)

3.27 (2.03)

4.34 (2.70)

6.62 (4.11)

7.82 (3.00)

10.36 (6.44)

13.74 (8.54)

4

29.37 (18.25) 24.76 (15.39)

*The specifications are subject to change for improvement without notice.

1-20

Range shift

LL

L

M

MODEL

Main shift

1

2

3

3

4

1

2

4

1

2

2

3

4

1

Traveling Speed : Km/hour (mile/hour)

Forward

0.66 (0.41)

0.88 (0.55)

1.34 (0.83)

1.58 (0.98)

1.88 (1.67)

2.49 (1.55)

3.80 (2.36)

4.49 (2.79)

3.93 (2.44)

5.21 (3.24)

7.95 (4.94)

9.38 (5.83)

12.43 (7.72)

16.49 (10.25)

T503 CABIN

Reverse

0.56 (0.35)

0.74 (0.46)

1.13 (0.70)

1.33 (0.83)

1.58 (0.98)

2.10 (1.30)

3.21 (1.99)

3.78 (2.35)

3.31 (2.06)

4.39 (2.73)

6.70 (4.16)

7.91 (4.92)

10.48 (6.51)

13.90 (8.64)

25.04 (15.56)

4

29.71 (18.46)

*The specifications are subject to change for improvement without notice.

1-21

SECTION 3. GEAR TRAIN DIAGRAMS

Fig.1-3 GEAR TRAIN DIAGRAM

1-22

SECTION 4. PRECAUTION FOR TRACTOR OPERATION

1. INSTRUMENTS

Fig.1-4 Instruments

Note:

- Oil pressure warning light and charge light on the monitor array will light when the main switch is turned from OFF to ON.

- All lights on the panel go out automatically when the engine is started and its speed is increased to a specific level.

- Do not panic if some lights on the monitor light array do not go out while the engine is at idle speed just after its starting. They will go out automatically when the engine speed reaches as a specific level.

1-24

1) MONITOR LIGHT ARRAY

High beam lamp

Low beam lamp

Parking brake

PTO monitor Lamp

Glow signal Lamp

Fuel Level

Oil pressure lamp

Charge lamp

Fig.1-5 Monitor array (Cabin)

Wiper Switch

Washer Switch

Working Lamp Switch

1-25

Fig.1-6 Working lamp switch

VENTILATION

The ventilation unit is housed in the cab ceiling.

To switch it on and adjust it, turn the electrical fan switch to the desired speed.

The cab becomes slightly pressurized when the ventilation system is in operation, so that fresh air can enter only by way of the filter installed in the rear section of the cab roof.

The fan switch can be operated only after the ignition key is inserted.

The air flow can be regulated and directed by suitable positioning of the air diffusers.

Air can be taken in fresh from outside or re-circulated from within the cab by way of the relative side inlets

Re-circulation inlets fully closed: air is taken in entirely from outside the cab through the rear grille and filtered through a paper element positioned behind the grille.

N.B-it is very important that the air diffusers never be completed closed so as to allow for a steady air flow.

To obtain greater pressurization inside the cab, it is necessary to take air from the outside, therefore the inside air re-circulating grille should be fully closed.

2. CONTROLS

Fig.1-7 Controls

1-23

3. FILLING DIAGRAM & CAPACITY TABLE

No.

1

Filling point

RADIATOR

Fillings

MODEL

50/50 : Ethylene Glycol/Water (L.L.C)

ASTM D4985 / D6210

API : CH4 grades

Recommended SAE viscosity grades

TABLE 1-7

Quantity Liter (gal.)

T433/T503/T553

8.5ℓ(2.24 US gal)

ENGINE

2 5.5ℓ ( 1.45

gal)

3

4

5

6

7

8

A: Viscosity

B: Temperature

TRANSMISSION CASE See next page *

FRONT AXLE (API GL-4 Grades)Gear oil #80 or #90

FINAL DRIVE CASE(B) (API GL-4 Grades) Gear oil #80 or #90

Clutch pedal shaft

BALL JOINT

FUEL TANK

Tire size and inflation

Grease

Grease

Diesel fuel

T553

CABIN

T553

ROLL-BAR

T433/T503

Front

Rear

Front

Rear

Front

Rear

35ℓ(9.24 US gal)

10ℓ(2.64 US gal)

As required

As required

60ℓ(15.85 US gal)

TABLE 1-8

9.5-18-8PR (39.8 PSI)

13.6-28-6PR (22.6 PSI)

9.5-16-6PR (29.9PSI)

13.6-26-6PR (21.3 PSI)

8-16-4PR (22.76 PSI)

13.6-24-6PR (22.76 PSI)

1-24

4. MAINTENANCE CHART

○ inspection, replenish, and adjustment

● Replacement △△△△ Cleaning and/or washing

★ Consult your Dealer

☞ ENGINE

Inspection items

Engine oil

Oil filter

Air cleaner

○

Inspection and servicing intervals

Hour of operation

(X10 on hour meter)

5 1

0

1

5

2

0

2

5

3

0

3

5

4

0

4

5

5

0

5

5

6

0

Intervals after that

△△△△ △△△△ △△△△ △△△△

●

●

△△△△

Judgment criteria mm(in)

Every 500 hours or

12months

Level is between upper and lower limits

●

Every 500 hours or

12months

Clean after every

100hrs.Replace element that has been washed more than 5 times

Replace every year.

Fill coolant up to

Radiator

Radiator

○ required

Check daily for damages leakage

Radiator fin & screen

○ △△△△ △△△△ △△△△

Clean cooling fins and cores

Fuel

Fuel filter

○

○ ●

Everyday and before work

Every 500 hours or

12months

Check daily

Tank should be full

Fan belt

○

About 5(0.20in) deflection pushed with a finger

Electrolyte level

○ ○ ○ ○ ○ ○ ○

Check after every

100hrs.and replenish if necessary

1-25

☞

TRANSMISSION

Inspection items

Inspection and servicing intervals

Hour of operation

(X10 on hour meter)

5 1

0

1

5

2

0

2

5

3

0

3

5

4

0

4

5

○ inspection,replenish,and adjustment

● Replacement △△△△ Cleaning and/or washing

★ Consult your Dealer

5

0

5

5

6

0

Intervals after that

Judgment criteria mm(in)

Transmission oil

○ ● ●

Replace after initial 50 hrs,then after every 300 hrs.

Clean hydraulic suction filter at the same time.

Check daily Free Play:20 to 30mm

Clutch pedal free play

Brake pedal free play

○

○

Check daily Free Play:30 to 40mm

Brake performance

Lever performance

○

○

Steering wheel

○

Check daily

Check daily

Check daily

Interlocked brakes should work simultaneously

Every lever should work positively

About 50mm (1.97) on circumstance

Toe-in

Retightening ball joints of steering system

○

★

○

★

Check after every 300 hrs

Check after every 300 hrs

○

Check daily

Wheel tightening bolts and nuts

○

Greasing each nipple

Loose bolts and nuts

○

Electric wiring

○

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Replenish every 50 hrs

(Everyday in dusty condition)

○ ○

Check every year

0 to 4 mm (0~0.157 in)

All should be tighten

Front:116-130(ft-lbs)

Rear:268-282(ft-lbs)

All should be tighten

All should work properly.

1-26

Inspection items

Electric apparatuses

Adjusting accelerator pedal and throttle lever

Oil leaks in clutch housing

Hydraulic fluid filter

4WD front axle

Rubber pipes

Inspection and servicing intervals

Hour of operation

(X10 on hour meter)

5 1

0

1

5

2

0

2

5

3

0

3

5

4

0

4

5

5

0

5

5

6

0

Intervals after that

Check every year

Judgment criteria mm(in)

All should work properly

●

○ ○ ○

★

○

●

○ ○

★

Check after 300 hours

○

Check once a year with the lower plug pulled out

Replace after initial 50 hrs. and then after every

300 hrs

Check after every 100

600hrs

○

Check after every 100 hrs.

Replace if leaking

1) Every terminal should be connected securely

2) Wiring should not interfere with other parts.

3) Fatigued wiring should be replaced.

4) Wiring should be held in each clamp properly.

1-27

Disassembly and reassembly of major components

Chapter 2

SECTION 1. GENERAL PRECAUTIONS AND SEPARATION

AND REINSTALLATION--------------------------------

2-1

1. Before operation--------------------------------------------------------

2-1

2. Precautions to be followed when installing standardized parts.

----------------------------------

2-1

02

SECTION 2. OPERATION CHART FOR DISASSEMBLY

AND REASSEMBLY BY MAJOR BLOCKS----------

2-4

1. Separation of the front axle and axle bracket--------------------------------

2. Separation of the engine and front axle bracket-----------------------------

3. Separation of the engine and front transmission----------------------------

4. Separation of the front transmission and Spacer transmission----------

5. Separation of the Spacer transmission and rear trans mission----------

6. Separation of the rear transmission and rear axle housing --------------

7. Separation of the rear transmission and Cylinder case -----------------

2-5

2-6

2-7

2-12

2-17

2-18

2-19

Chapter 2

Disassembly and reassembly of major components

SECTION 1. GENERAL PRECAUTIONS FOR SEPARATION AND REINSTALLATION

1.BEFORE OPERATION

1) Always be safety-conscious in selecting clothes to wear and suitable tools to use.

2) Before disassembly, be sure that you familiarize yourself with the assembled condition for subsequence in reassembly.

3) Keep parts and tools in proper order during operations.

4) When servicing electrically charged parts,be sure to disconnect the negative battery terminal.

5) To prevent oil or water leaks,use the liquid gasket as required.

6) When lifting up only the front or rear part of the tractor,be sure to wedge the grounded wheels.

8) When the tractor is jacked up, be sure to support the entire tractor with something like a stand.Lifting it up with a jack only is dangerously unstable procedure.

9) When replacing parts,use authorized, genuine

TYM parts only.TYM assumes no responsibility for accidents,operating problems or damage caused by the use of imitation parts.

Also,the use of unauthorized parts will result in relatively poor machine performance.

2. PRECAUTIONS TO BE FOLLOWED

WHEN INSTALLING STANDARDIZED

PARTS.

(1) Roller or Ball bearings

1) When a bearing is fitted in by the outer race, use an installer which is an specially designed to push only the outer race and vice versa.

2) The installer must be designed to install the bearing on the shaft in a parallel position.

3) When installing a bearing which appears the same on both sides, install it so that the face which has the identification number faces in a direction for easy visual identification.All transmission case should be placed so that their identification number faces outward.

4) If a shaft or hole where a bearing is to be installed has a stopper,the bearing should be pushed in completely until it is seated against the stopper.

5) Installed bearings should turn smoothly.

(2) Oil seals

1) Oil seals installer should be designed so as not to deform the oil seals.

2-1

2) During installation,be careful not to damage the lips,and assure that it is pushed in parallel to the shaft or hole.

3) When oil seals are installed,there should be no turnover of the lips nor dislocation of the springs.

4) When a multi-lip seal is installed, the grooves between lips should be filed with grease, not adhesive.

(3) O-rings

1) O-rings should be coated with grease before installing.

2) Installed O-rings should have no slack or twist.

3) Installed O-rings should maintain proper air tightness.

(4) Snap rings

1) Snap ring installers should be designed so as not to permanently deform the snap rings.

2) Installed snap rings should be seated

3) Be careful not to overload the snap ring to the extent that it is permanently deformed.

4) How to install the snap ring:

When installing a snap ring,install it as shown in the figure with its round edge side turned toward the part to be retained.This round edge is formed when the snap ring is pressed out.

(5) Spring(roll) pins

1) Spring pins should be driven in properly as tightly.

2) Spring pins should be installed so that their seams should face the direction from which the load is applied.

Fig.2-2

3) The roll pins installed in the transmission or other parts where much force is applied should be retained with the wire.

(6) Cotter pins

When installed, cotter pins should be bent securely at the ends as shown in the figure

Fig.2-1

2-2

(7) Bolts and nuts

Fig.2-3

1) Special bolts are installed at several locations, so be sure not to interchange them other bolts.

2) Bolts and nuts should be tightened to their specified torque wrench.

3) When locking the bolts or nuts with wire or a lock washer,

,Be sure to wind the wire paying sufficient attention to its winding direction and bend the lock washer for secure looking.

4) When locking bolts and nuts with an adhesive,apply the adhesive on the thread and tighten securely.

5) Apply an adhesive(THREE BOND

TB1104) to parts through which there is any possibility of oil leaks,such as stud bolts and tapped-through parts.

6) Each lock nut must be tightened securely.

7) When tightening bolts and nuts, refer to the tightening torque table.

(8) After installation, each grease fitting should be filled with grease.

1) When installing grease fittings of type B and C,be sure to turn the fitting tips in a direction that will provide easy access for a grease gun.

(9) Other precautions

1) Be sure not to damage any finished surfaces or parts.

2) Always refrain from forcing installation.

3) Each lever knob should be installed coated with an adhesive

(SUPER THREE CEMENT TB1702)

4) Each contact surface should be coated with an adhesive (THREE BOND TB 1215) and tightened evenly with bolts.

Adhesive coated surfaces should be installed within 30 minutes after application of the adhesive.

The contact surfaces should be flawless and free from foreign matter,and especially from grease before application of the adhesive.

5) Precautions for applying adhesives.

- The surface or the thread where and adhesive is to applied should be completely free of chips.

- The surface or the thread where an adhesive is to be applied should be completely free of oil-ness.

2-3

SECTION 2. OPERATION CHART FOR DISASSEMBLY AND

REASSEMBLY BY MAJOR BLOCKS

2-4

SECTION 3. SEPARATION OF MAJOR COMPONENTS

1. SEPARATION OF THE FRONT AXLE ASSEMBLY AND THE AXLE BRACKET

5) Remove the front axle assembly forward.

Parts which can be inspected during this operation

-Final case

-Differential gear

-Power steering system

Note : When working on the 4WD version, the drive shaft should be removed ahead of time.

(1) Removal

1) Hold the front hitch or the front bracket securely with a crane or stands.

2) Support the front axle bracket with a jack

3) Remove steering hose(LH, RH) to the power cylinder.

Fig.2-4 Steering hose(RH, LH)

4) Remove four bolts connecting the front axle supports with the front axle bracket

Front bolts

Fig.2-6 Drive shaft (4WD)

(2) Installation

1) Install the front axle assembly.

2) Install four bolts connecting the front axle supports with the front axle bracket

Note : Apply grease to the bushing and fill the oil seal with grease ahead of time. Install the oil seal carefully not to allow its lips to turn over.

3) Install both of the right and the left steering hose.

4) Install the drive shaft (4WD)

Rear bolts

Fig.2-5 Front axle

2-5

2. SEPARATION OF THE ENGINE AND THE FRONT AXLE BRACKET

Parts which can be inspected during this operation

-Air cleaner

-Radiator

-Engine front part.

6) Remove the quick coupler (Freezer hose)

7) Remove the other wirings

8) Remove the air cleaner assembly

9) Remove the upper hose, lower hose and drain hose from the radiator.

(1) Removal

1) Hold or support the engine with a crane or stands.

2) Hold or support the front bracket or the axle bracket in a manner that the part other than the engine can be removed if required.

3) Open the engine hood.

4) Remove the side covers (RH and LH) and engine hood (Electrical wire Included)

Note : The radiator should be drained of the coolant ahead of time and remove the 4WD drive shaft.

10) Remove the fuel hose and the drain hose

Fuel filter Primary pump

11) Remove the two hoses for the power steering system.

Note : When the pipes related to the hydraulic system are removed, their openings should be covered with plastic caps or the like to keep out dust or other foreign matter.

Fig.2-7 Side cover (LH, RH)

5) Disconnect the negative and positive battery cables. 12) Remove the axle bracket from the engine

Negative Cable Positive Cable

Fig.2-8 Battery

2-6

Remove the bolts

Fig.2-10 Front axle bracket(LH, RH)

(2) Installation

Reassemble in reverse order of removal.

1) Install the axle bracket on the engine.

2) Retighten the right-hand pivot metal

(support) mounting bolts.

3) Connect the piping of the power steering system.

4) Install the battery bracket and battery.

5) Install the radiator and the quick coupler

(Freezer hose) on the front axle bracket.

6) Connect the upper, lower and drain radiator hoses.

7) Install the air cleaner assembly and the inlet pipe of the air cleaner.

8) Connect the wiring of the head lights and other electric wire

9) Connect the ground strap and the battery cables.

10) Install the engine hood.

11) Install the side covers.

12) Fill the radiator with coolant.

13) Install the drive shaft (4WD)

AND THE FRONT TRANSMISSION.

Parts which can be inspected during this operation

-Fly wheel

-Main clutch

(1) Removal

1) Remove the front drive shaft.

( In case of the 4WD version )

2) Support the engine on the bottom with a jack or stands.

3) Hold the transmission with a garage jack or a crane so that the transmission side can be moved when needed.

4) Remove both side covers (RH and LH) and engine hood (Electrical wire Included)

Hook release lever

Fig.2-12

With the hood up,the Hook release lever can be removed by pulling rearwards, having first detached the hood lamp wiring harness.

hood lamp wiring harness.

Fig.2-11

2-7

Fig.2-13

5) Disconnect the battery cables and fuel line.

(Refer to the Fig 204 in the Parts catalogue)

Fuel filter

9) Disconnect the rubber hose from the suction pipe.

Disconnect the delivery pipe from the gear pump.

(Refer to the Fig 609 in the Parts catalogue)

Negative Cable Positive Cable

Fig.2-14

Note : Disconnect the other wiring couplers

6) Remove the three hoses for the power steering system(Refer to the Fig 308 in the Parts catalogue)

7) Remove the coupler (Freezer hose) and heater hose.

Fig.2-18

10) Separate the engine from the transmission assembly after removing the bolts to the below description and the alternator (15 bolts)

8) Remove the accelerator wire (Refer to the Fig 206 in the Parts catalogue)

LH:5x bolts

The point to be separated

Fig.2-19

Upper : 2 x bolts

RH:5x bolts

Fig.2-17

2-8

Lower : 3 x bolts

Fig.2-18

Fig.2-20

11. Refer to the description in the parts catalogue

Fig. Hydraulic pipe

Fig. Joy stick

Fig.. Hydraulic Hose

Fig. 2-21

2-9

Refer to the description in the parts catalogue

Fig. Fuel Hose & Filter

Fig. Accelerator

2-9

Fig. 2-22

Refer to the description in the parts catalogue

Fig. Fuel Tank

Fig. 2-23

2-9

Fig.2-24 Front drive shaft (4WD)

Fig.2-25 Air conditioner Hose

Fig.2-26 Engine hood

2-10

Fig.2-27 Power steering

(2) Engine separation from the chassis.

When separating the engine from the chassis, the following steps are required as well as the ones mentioned above.

1) Lift the engine with the hoist and hold the front axle bracket with a stands or the like.

2) Disconnect the upper, Lower, and drain hoses from the radiator.

3) Disconnect the power steering system hoses.

4) Remove the fuel hose and the drain hose.

5) Disconnect the hydraulic line.

6) Separate the engine from the front transmission.

7) Wedge both sides of the front axle to prevent the engine from tilting.

Fig.2-28 Wedging

(3) INSTALLATION

REASSEMBLY IN REVERSE ORDER OF REMOVAL.

1) Install the engine on the front axle bracket.

2) Assemble the engine and the front transmission.

Note : Apply small mount of grease to each of the sliding parts. Be careful not to apply excessive amount of grease as this could cause clutch slipping. During operation, be sure to avoid any of the reassembly operations that may place load upon the input gear.

3) Install the quick coupler of the freezer

4) Install the power steering hose

5) Install the hydraulic system piping.

6) Connect the wiring for the engine.

7) Connect the other wirings

8) Install the accelerator wire

9) Connect the battery terminals.

10) Install the engine hood and side cover.

2-11

4. SEPARATION OF THE FRONT TRANSMISSION AND SPACER TRANSMISSION

Parts which can be inspected during This operation

-Reverse change gears -Creep change gears -Main change gears and related parts

(1) Removal

A : Removal of the cabin

1) Remove the side covers(LH and RH) after opening the engine hood.

4) Disconnect four power steering hoses

Fig.2-32

5) Disconnect the brake rods under the floor.

Fig.2-29

(Refer to the Fig 204 in the Parts catalogue)

Fuel filter

Negative Cable Positive Cable

Fig.2-30

Note : Disconnect the other wiring couplers.

3) Disconnect the reverse wire under the floor.

Fig.2-33 Brake rod (LH, RH)

6) Disconnect the clutch rods in front of the floor located left side and remove the retaining pin.

2-12

Remove the retaining pin

Disconnect the clutch rods

Fig.2-34 Clutch rod

Fig.2-31 Reverse change

7) Remove the slow-return check valve knob.

8)Remove the diff-Lock pedal

12) Remove the accelerator wire (Refer to Fig 206 in the Parts catalogue)

Fig.2-35

9) Remove the main shift and transmission range shift levers. The levers can be separated in the middle.

10) Remove the control rods of the PTO shift and

4WD shift levers from the transmission.

11) Remove the position , draft control levers,

External hyd. levers and Joy-stick levers.

Fig.2-38

13) Remove the quick coupler (Freezer hose) and heater hose.

Fig.2-39

Fig.2-39

14) Remove the heater hoses (2 points)

Note : The best way to remove above levers is to loosen linkages under the floor.

Fig.2-40 Heater hoses (LH)

15) Remove the electrical wires(4 points)

Creep lever

Fig.2-37 Range shift lever (LH)

2-13

PTO solenoid switch

(Under the floor (RH))

Engine harness

Cabin harness

Fig.2-41 PTO solenoid wire and the engine harness

16) Remove four rubber mounts.

Note : Lift up the cabin gradually making sure that all relevant wiring. Piping, cock and links are disconnected.

18) Remove the Cabin assembly.

2 x Bolts

Front LH, RH

2 x Bolts

Rear LH, RH

Fig. 2-44

Fig.2-42 Rubber mounting

17) Lift the cabin gradually taking care not to allow the shaft of the slow-return check valve and its hole in the floor to interfere with each other.

Fig.2-43 Slow return shaft

2-14

Fig. 2-45 : 4 hangers to be lifted

B: Division of the chassis.

1) Drain the transmission case of oil

Brake rods

4WD shaft

Oil pan

Hydraulic pipes

Fig.2-39 Brake rod.

Fig.2-48 View of the under chassis

2) Wedge both sides of the front axle to prevent the engine from tilting (Refer to the Fig 2-28 in the workshop manual)

3) Remove the front wheel drive shaft.

(Refer to the Fig 2-6 in the workshop manual)

4) Hold or support the cabin with a crane or stands.

5) Place a jack under the bottom of the front transmission case to support.

12) Remove the suction, delivery and drain pipes.

13) Remove the delivery pipe and the valve for the PTO clutch.

14) Remove the fuel tank and the fuel hoses.

Delivery pipe

Rear

Front transmission case to support.

7) Remove the main shift and the sub shift levers.

The levers can be separated in the middle

(Refer to the Fig. 2-36 in the workshop manual)

8) Remove the control rods of the PTO shift, and

4WD shift levers from the transmission.

9) Remove the position , draft control levers,

External hyd. levers and Joy-stick levers.

10)Remove the rear tire assembly.

11)Remove the brake rods(LH, RH)

Drain pipe

Delivery PTO pipe

Brake rod

Oil filter

Fig.2-49 Exterior of a transmission

15) Remove the reverse change lever, and Hook comp

Fig.2-47 Brake rods

2-15

Fig.2-50 Reverse change lever and Hook

16)Remove the bolts which tighten the front transmission and spacer transmission cases.

Fig.2-51 The position of the bolts and the nuts

17) Move the rear part of the tractor rearwards by pushing the rear wheels by hand, and then the spacer and rear transmission assembly will be separated from the front transmission.

Note :When moving the rear part of the tractor.

Be careful not to allow the garage jack to shift from the front transmission case.

Remarks

The rear transmission and spacer transmission cases should be separated and the reverse shift lever removed in order to take out or provide access to the main shift and transmission range shift gears. For further details, refer to Chapter 5.

Transmission.

(2) installation

Reassemble in reverse order of disassembly.

1) Assemble the front and spacer transmission.

(Tightening torque : 1,300~1,500 kg-cm)

2) Install the reverse shift lever along with reverse cable.

3) Install the delivery pipe and the valve for the PTO clutch.

4) Install the suction, delivery and drain pipes.

Fig.2-52 The state under separation

Fig.2-53 The separated state

Tightening torque :

4,600~5,500kg-cm

Fig.2-54 PTO delivery pipe

2-16

5) Install the brake rods(LH, RH)

6) Install the front wheel drive shaft.

7) Install the fuel tank and the fuel hoses.

8)Connect the fuel gauge coupler on the fuel tank and the PTO valve switch.

9)Install the position , draft control levers,

External hyd. levers and Joy-stick levers.

(Refer to the Fig. 2-36 in the workshop manual)

10)Install the control rods of the PTO shift, and 4WD shift levers from the transmission.

12)Install all levers, knobs and Rods.

13)Fix the floor at the four rubber mounts.

14)Install the tire assembly.

15)Fill the transmission case with oil :

35ℓ(9.24 US gal)

5. SEPARATION OF THE SPACER TRANSMISSION AND THE REAR TRANSMISSION

Parts which can be inspected during this operation

-PTO clutch

-Speed range gear (Sub shift gear)

- Drive pinion gear

- 4WD drive gear

4) Remove the bolts which tighten the spacer transmission and the rear transmission cases.

(1) Removal

1) Remove the cabin referring to

” SECTION 3-4-(1) A ; Removal of the cabin”

When separating the spacer and rear transmission cases from each other, Remove the cabin referring to “SECTION 3-4-(1) A : Removal of the cabin”

Upper : 2 x Nuts M14, Lower : 2 x Nuts M14

LH, RH : 6 x Bolts M14, Pin : 2 x D10-22

2) Remove the rear transmission referring to

SECTION 3-4-(1) B : Division of the chassis from 1) to 14)

3) Remove the 4WD shift metal, the main shift metal, and the sub shift metal.

Fig.2-59 The position of the bolts and the nuts

5) Disengage the shifter link through the opening of the main change metal(support) and turn the crescent cut-away in the gear downwards.

Crescent cut away

Fig.2-56 4WD shift metal

Fig.2-57 Main shift metal Fig.2-58 Sub shift metal

2-17

Fig.2-60

6) Move the rear part of the tractor rearwards by pushing the rear wheels by hand.

Note :When moving the rear part of the tractor.

Be careful not to allow the garage jack to shift from the front transmission case.

(2) Installation

Reassemble in reverse order of disassembly.

Note : The 4WD drive shaft should be installed on the rear transmission ahead of time.

1) Join the rear and spacer transmission cases.

Note : During the operation,be careful not to damage needle bearings, the cut –away part in the gear should be turned downward without fail so as to clear the gear to be positioned underneath.

3) Remove the tire assembly

4) Remove the brake rods.

5) Remove the 3-point linkage and related parts.

6) Support the Cabin mounting (floor panel) with a trestle or the like.

7) Remove the rubber mount along with the bracket.

2) Install the main change shifter link and each change metal.

3) Install the brake rods and front drive shaft.

4) Install the hydraulic piping.

5) Install two rear rubber mounts.

6) Install exterior parts.

7) Fill the transmission case with oil :

35ℓ(9.24 US gal)

6. SEPARATION OF THE REAR TRANS-

MISSION AND REAR AXLE HOUSING

Fig.2-62 Rear mounting

8) Remove the rear axle housing tightening bolts.

9) Detach the rear axle housing from the rear transmission case

-Brakes

-Final gears

(1) Removal

As both sides can be disassembled in the same way, only left-side will be explained here.

1) Drain the transmission case of oil

2) Lift up the rear transmission and remove the rear wheel on the diff-lock side.

Spacer transmission

Fig.2-63 Rear axle housing

(2) Installation

Reassemble in reverse order of disassembly.

1) join the rear axle and rear transmission

2) Reinstall the other removed parts.

3) Mount the rear wheel.

4) Refill the transmission with oil up to the specified level

-Level up to fill the oil can be sought from the rear axle housing(LH) of the rear transmission.

Fig.2-61 Drain plug

2-18

7. SEPARATION OF THE REAR RANSMISSION AND CYLINDER CASE

Parts which can be inspected during this operation

- Control valve

- Control linkage

- Piston and lift crank linkage

- PTO change gears.

- Differential gear

4) Remove the Cylinder case tightening bolts.

5) Detach the cylinder case assembly from the rear transmission

(2) Installation

Reassemble the reverse order of disassemble.

1) Tighten the cylinder case on the rear transmission case to the specified torque.

Inspection and service of the rear transmission should be performed following the instructions in the paragraph : 4. SEPARATION OF THE

FRONT TRANSMISSION AND SPACER

TRANSMISSION

(1)Removal

Tightening torque 550~700 Kgf-cm

(40.5~51.6 lb.fts)

2) After reassembly, make sure that the system functions properly.

1) Remove the the cabin referring to :

SECTION 3-4-(1)-11) A:Removal of the cabin”

2) When the tractor is equipped with an optional auxiliary valve, remove the slow-return shaft, the delivery pipe and the levers.

3) Remove the 3-point lift link and related parts

Fig.2-65 Cylinder case assembly

2-19

Chapter 3

ENGINE ACCESSORIES

SECTION 1. RADIATOR ---------------------------------------------------

3-1

1. General description ------------------------------------------------------

3-1

2. Radiator

--------------------------------------------------------------------------------------------

3-2

3. Specifications

---------------------------- --------------------------------------------------------

3-3

4. Removal of the radiator

-------------------------------------------------------------------

3-3

5. Inspection of each part

--------------------------------------------------------------------

3-3

6. Radiator reassembly ------------------------------------------------------

3-5

7. Daily inspection ------------------------------------------------------------

3-5

8. Trouble shooting ----------------------------------------------------------

3-6

03

1. General description--------------------------------------------------------

3-7

2. Double elementary air-cleaner -----------------------------------------

3-8

3. Inspection of each part---------------------------------------------------

3-9

4. Cleaning of the air cleaner-----------------------------------------------

3-9

5. Element installation-------------------------------------------------------

3-10

Chapter 3.Engine accessories

SECTION 1. RADIATOR

1.General description

The pressure cooling system includes mainly the radiator,water pump,multi-blade fan, and the thermostat.During the warm-up period,the thermostat remains closed and coolant is directed through by-pass to the suction side of the water pump.

Coolant then circulates through the cylinder block and water pump only to provide a uniform and fast warm-up period. Once the engine has reached operating temperature,the thermostat opens and coolant is pumped from the bottom of the radiator via the lower hose into the cylinder block. Here it circulates through the block and around the cylinders.

From the cylinder block,coolant is directed through the cylinder head and into the thermostat housing.With the thermostat open,coolant passes the top of the radiator where it is circulated to dissipate heat.

Fig.3-1

Fig.3-2

3-1

2. Radiator

The radiator consists of radiator cores, a tank to Flow coolant,side plates to install the radiator, and a fan guide.

Fin-tube type cores are used and the cores and tank is made of anti corrosive Aluminum and

Aluminum alloy.

Fig.3-3

1.Radiator assy 2.Net comp 3. Shroud comp 4. Insulator

5.Hose Radiator inlet 6.Hose radiator outlet 7. Pipe comp 8. Hose (Radiator/Outlet)

9.Clip 45 11.Bolt 12. Cushion Rubber Radiator

14. Sponge, side(430) 15. Sponge under(520) 16.Tank assy reserve 17.Holder comp.

18. Bolt 19. Breather comp 20 Rivet, Blind 21 Washer plain

22 Bracket shield LH 23. Bracket shield RH 24 Bolt 25. Shield LH

26. Shield RH 27 Bolt 28 Sponge, front 430

3-2

3. SPECIFICATIONS

Description

Radiator core type

Core train number

Radiator fin pitch

Thermal radiator area

Pressure valve opening pressure

Coolant capacity

Test pressure

T433/T503/T553

Wave Fin

4 trains

3 mm

18.0442

㎡

0.9

±±±±0.15Kgf/ ㎠

8.5 ℓ

1.5 Kgf/

㎠(21.3 psi)

4. REMOVAL OF THE RADIATOR

1) Release the clamp and remove the upper hose.

2) Release the clamp and remove the lower hose.

3) Release the hose clamp and remove the water drain hose.

Note:

Refer to the paragraph”SEPARATION OF THE in chapter 2 for operation up to this step.

-When removing the radiator,take care not to damage the radiator cores and oil cooler.

5. INSPECTION OF EACH PART

1) Inspection for radiator water leaks.

Excessively compressed air may damage the cores, so perform the air delivery carefully,watching the pressure gauge. Water leaks are inspected by watching for rising air bubbles.

Fig.3-4

Water leaks are liable to occur at the fitting portion between the upper tank and the core section or between the lower tank and the core section.

If any water leak should occur there,repair the leak by soldering.Besides making a visual check,a more complete inspection should be accomplished as follows:

a. Leak test with compressed air.

Place the radiator as shown in the figure. Close the openings for water inlet and with something like a rubber plug and apply compressed air

(1

㎏f/㎠ or 14.2psi) through the drain pipe into the radiator.

b.Leak test with a radiator cap tester

With the inlet and outlet pipes plugged up and the radiator filled with water,replace radiator cap with a radiator cap tester as shown in the figure.

Pump up the pressure in the radiator to the specified value and check to see if there are any leaks in the radiator.

When the radiator is water-tight,the pressure indicated on the pressure gauge does not increase,but if there are leaks,the pressure decreases.This tester is also applicable for leak tests for the whole cooling system,not only for the radiator.The test method is the same as mentioned above.

3-3

-Clean with a detergent

When cleaning the radiator with a detergent, follow the instructions given by its manufacturer.

Different detergents have different characteristics.

b. Cleaning the radiator exterior

Fig.3-5

-

Cleaning the net (wire mesh)

After the tractor has been operated in dusty conditions,check the net daily and clean it if necessary.

Testing Pressure 1.1 Kg /

㎠

-

Cleaning the radiator cores

2) Inspection for radiator clogging

To inspect the radiator cores to see if they are clogged with fur or rust,remove the radiator cap and check for transparency of the coolant,and for rust or fur formation around the radiator throat inside the radiator.

If some rust or fur has formed or the coolant transparency is very poor,the radiator should be cleaned.

a. Cleaning the radiator inside.

-Place the radiator upside down and supply pressurized water from a faucet to the lower tank, draining through the upper tank,as shown in the figure to wash out accumulated deposits.

Clean the radiator cores by applying water spray or compressed air so as to for a right angle with the radiator cores,moving water application in parallel.

Note:

When cleaning the radiator cores with pressurized water,be sure to apply it at a right angle to the cores. Slanted application might deform their cooling fins.

When the radiator exterior is corroded,cracked,or badly damaged,replace the radiator.Also replace damaged or fatigued water hoses.

Retighten loose hose clamps securely if water is leaking through the hose clamps securely ,or replace them if necessary.

4) Inspection of the radiator cap.

Check the radiator cap to see if it functions normally,using a radiator cap tester as following.

Fig.3-6

3-4

Fig.3-7

Pressure valve

Opening pressure

Vacuum valve

Opening pressure

0.9 Kg /

㎠

(12.80 psi)

0.04 ~ 0.05 Kg /

㎠

(0.57 ~ 0.71psi)

-Function test:

The pressure type radiator cap has a pressure valve and a vacuum as shown in the figure.

Both valves are held against there seats by springs while the pressure in the cooling system remains within a specified range,thus keeping the cooling system air-tight.

When the pressure in the radiator rises higher than the specified valves,it overcomes the force of the pressure valve spring and open the pressure valve to release excess pressure through the overflow pipe as shown in the figure.

6. RADIATOR REASSEMBLY

Reassemble the radiator in the reverse order of disassembly.

Note:

- The rubber hoses should be clamped securely and must not interfere with the cooling fan.

- The radiator cores must not interfere with the cooling fan.

7. DAILY INSPECTION

1) Coolant level inspection and coolant replacement

When the radiator is hot after operation,be sure to wait until the coolant cools down sufficiently before removing the radiator cap.

If this is not done,heated vapor might burst out and cause burns.Use fresh water from a faucet as the coolant. When the coolant is replenished or changed,let the engine idle for a while for the coolant to circulate sufficiently in the cooling system and replenish if necessary after stopping the engine.

2)Antifreeze

When The weather is cold,use an antifreeze to prevent the engine from freezing.The freezing water and antifreeze.Therefore,prepare an antifreeze solution which will have a freezing point 5℃ lower than the estimated lowest atmospheric temperature in your environment.

Fig.3-8

When the coolant temperature falls enough to cause the vapor to condense in the cooling system and decrease the coolant volume,the radiator pressure becomes negative.When this occurs,the vacuum valve opens to let outside air into the radiator as shown in the figure, thus preventing the radiator from being deformed.

Fig.3-9

Precaution for filling antifreeze.

- The radiator interior should be washed clean ahead of time.

- As concerns of mixing ratio of an antifreeze, follow its manufacture's instructions.

- Antifreeze should be blended well with water before filling.

- When the coolant level is lowered due to evaporation,maintain the level by adding water, not by using an antifreeze solution.

- When the coolant level is lowered due to leaks, maintain the level by adding an antifreeze solution of the same mixing ratio.

- As antifreeze corrodes point,take care not to spill it on painted parts.

-The tractor is filled with a permanent type antifreeze (Mobile Long Life Coolant) when shipping(mixing ratio:50%)

3-5

8. TROUBLE SHOOTING

Problems

1) Overheating

2) Overcooling

Causes

(1) Low coolant level

(2) Fatigued pressure valve spring

(3) Loose or broken fan belt

(4) Oily fan belt

(5) Poor thermostat

(6) Poor water pump or water leaks

(7) Clogged water passages

(8) Improper injection timing

(9) Clogged air ways

(10) Fuel gas enters water jacket due to broken cylinder gasket

(1) Poor thermostat

(2) Excessive low atmospheric

TABLE 3-1

Countermeasures

(1)Replenish coolant and inspect water leaks.

(2)Replace radiator cap.

(3)Adjust belt tension or replace.

(4)Replace.

(5)Replace.

(6)Repair or replace.

(7)Clean radiator and water passages.

(8) Adjust injection timing.

(9) Clean radiator exterior.

(10) Inspect cylinder head and replace cylinder gasket

(1)Replace

(2) Decrease radiator working area

3)Lose of coolant (1) Leaking radiator

(2) Loosely clamped or broken water hose

4) Noisy cooling fan

(3) Fatigued pressure valve spring

(4) Leaking water pump

(5) Water leakage through cylinder head gasket

(6) Cracked cylinder head or body

(1) Poor water pump bearing

(2) Loose or bent fan

(3) Unbalanced fan

(4) Poor fan belt

(1)Repair or replace

(2)Retighten or replace

(3)Replace radiator cap

(4)Repair or replace

(5) Inspect cylinder head and

Replace gasket

(6)Replace

(1)Replace

(2)Retighten or replace

(3)Replace.

(4)Replace.

3-6

SECTION 2. AIR CLEANING SYSTEM

1.GENERAL DESCRIPTION

Unfiltered air contains many particles harmful to the engine such as dust ,sand,or other foreign matter.

When such foreign matter have entered in to the engine,They have mixed into the lubricant and promote wear of lubrication parts in addition to damaging the piston cylinders.To eliminate these harmful particles,an air cleaner has been installed.The air cleaner Which is installed on the T series tractor is a dry,cyclone type and is constructed as shown in the figure.

Under the influence of suction generated by the engine,unfiltered air flows through air inlet tube and is forced into a high-speed centrifugal motion.By this circulating action most of the dust and dirt particles are separated from the air and collected in the dust unloading valve(4).The remaining dust is removed as the air flows through the paper element(2) before being drawn into the engine.

① Body ② Paper element outer ③ Cover assy ④ Dust unloading valve

Fig.3-10

3-7

2.ELEMENT AIR CLEANER

(1) SPECIFICATIONS.

Model T433/T503/T553

Type Dry, paper element filtering type

Rated intake air volume(

㎥/min .(cu.ft/min)

4.25(150)

Air venting resistance (

㎜Aq)

120 or less

Cyclone efficiency (%) 45 or over

Total filtering efficiency(%)

Dust holding capacity (gr)

Filtering area (

㎡)(sq.in)

Filter material

Temperature

99.9 or over

700

1.89

±4%

FPG 057512

-30~80

°C

(2) DISASSEMBLY

1) Element removal

Remove the wing bolt which clamps the paper element and take out the element.

1.Air cleaner assembly

1-01 Element ,Out

1-02 Body assy

1-03 Cover assy

1-04 plug

1-05 Valve

1-06 Element, In

7.Band air cleaner

8.Bolt

9. Pipe inlet

11. Hose in/air

12. Clamp worm 65

13. Hose out/Air

14. Clamp worm 60

15.Bracket Air cleaner

16.Bolt

Fig.3-11

3-8

3. INSPECTION OF EACH PART

1) Inspection of the cleaner body

(1) Check the cleaner exterior for cracks, deformation,or damage and repair or replace if necessary.

(2) Check each packing for fatigue or damage and replace if necessary.

Fig.3-12

2) Inspection of rubber hoses

Check the rubber hoses for fatigue or damage and replace if necessary.

3) Inspection of the paper element sufficiently after washing and put an electric bulb in to the element and look for damage.

4. CLEANING THE AIR CLEANER

Clean the air cleaner after 100 hours of operation or less depending on conditions in the following manner.

1) When the air cleaner is cleaned or the element is replaced ,dust accumulated inside the air cleaner body should be removed with a cloth.As inhaled dust causes engine wear,remove a dust accumulated inside the inlet pipe,the rubber hose which connects in the inlet pipe and the air cleaner, the inlet manifold,and inlet port.

(1)When accumulated dust is dry.

-When removing the dust in the element,hold the element by a hand and pat the side wall with other hand.Never hit the element against a stone or a concrete wall because that might cause its side wall to peel off.

-apply compressed air from inside of the element to blow dust off while turning the element by hand.

Fig.3-13 Element check

Note :

Especially note the glue portions of the paper and metal parts.

3-9

Fig.3-14 Element

Note : The compressed air to be applied should not have a pressure of more than 7

㎏/㎠

(99.6psi) Maintain sufficient distance between the air gun and the element.

(2)When accumulated dust is oily.

-Use a solution of TC 101 element detergent or the quality household neutral detergent.

Leave the element in the solution for approximately 30 minutes and then wash it by dipping it in and out of the solution.

-After soaking, rise it in fresh water.

-Let it in a shaded and well ventilated place.

Forced drying by heat or compressed air is prohibited.

Note : Water applied to rinse the element should not have a pressure of more than

2.8kgf/

㎠

An element which has been washed 5 times must be replaced with a new one.

5.ELEMENT INSTALLATION

Install the element in the reverse order of disassembly, but follow these instructions.

1) Each tightening clamp must be secured and care must be taken not to miss the packing and washers.

2) Before installing the element, clean the rubber packing on the top of the element.

Note : The clamp retaining the element should be tightened sufficiently so that it will

3-10

CHAPTER 4

Clutch system

SECTION 1. GENERAL DESCRIPTION --------------------------------4-1

SECTION 2. SPECIFICATIONS --------------------------------------------4-2

SECTION 3. DISASSEMBLY,INSPECTION,AND REASSEMBLY-4-3

1. Main clutch ------------------------------------------------------------------4-3

2. Clutch shaft and related parts--------------------------------------------4-5

3.Final adjustment of the clutch pedal-------------------------------------4-6

04

SECTION 4. TROUBLESHOOTING---------------------------------------4-7

Chapter 4. clutch system

GENERAL DESCRIPTION.

The clutch is a device to engage and disengage the power of the engine.The construction of the clutch is as shown in the figure. It is composed of the flywheel which holds the clutch disc, the pressure plate, diaphragm springs,the clutch cover,and input gear.

The plate is held against the flywheel by the pressure springs and pushes the clutch disc against the flywheel. The clutch disc,which is sandwiched between the pressure plate and the flywheel, is mounted on the splined part of the input gear. It can move in an axial direction,but is locked in the rotational direction.It transmits engine power to the transmission by means of friction. Twelve coil spring are installed between the clutch cover and the pressure plate along the circumference, which are the pressure springs.

To disengage the engine power, the force of the diaphragm spring acting on the pressure plate must be eliminated. For this purpose the release lever is installed. By depressing the clutch pedal, the release lever pushes off the pressure plate from the clutch disc, thus providing clearance between the friction surfaces of the flywheel, the clutch disc, and the pressure plate. Thus the engine is disengaged.

Fig.4-1 Main clutch disc.

4-1

SECTION 2. SPECIFICATIONS

Parts Items

Clutch cover

Clutch disc.

Type

Free length mm (in)

Stroke mm (in)

Springs

Torque capacity (kgf.m)

Clamping load (kgf)

Type

Facing material

Outer dia.

×inner dia. mm(in)

Effective friction area

㎠(sq.in)

Outer dia. mm(in)

Main disc

Spline hub

Inner dia. mm(in)

No.of splines

PTO

Large dia. mm (in)

Small dia.mm (in)

No.of splines

Disc thickness (free) mm (in)

Disc thickness (press) mm (in)

Clutch pedal

Surface deviation mm (in)

Lateral deviation mm(in)

Vertical deviation mm (in)

Clearance between lever plate and release bearing mm (in)

Clutch pedal free play mm (in)

Table 4-1

Description and assembly standard values

Diaphragm

43.3 (1.70)

8.0 (0.31)

Tc=40.1

P=650

Dry single plate

Y02

260X170 (10.23X6.69)

678.97(267.31) in both faces

35.0 (1.378)

31.7 (1.248)

19

Ø25.0 (0.984)

Ø21.7 (0.854)

13

8.3

±0.3 (0.33)

7.8

±0.3 (0.31) at 650 kgf

0.4 (0.015)or less

1.0 (0.039) or less

1.0 (0.039) or less

2.0 (0.079)

30∼40 (1.18 ∼ 1.57)

4-2

SECTION 3. DISASSEMBLY, INSPECTION, AND REASSEMBLY

1. Clutch

14.Bolt assy

15.Pin

21.Hub,Sleeve

22,Bolt

27.Sleeve

28.Bearing release

29.Spring tension 31

1.MAIN CLUTCH

1-1.Disassembly

Fig. 4-3 Clutch assembly

Separate the engine from the front transmission

MAJOR COMPONENT in chapter 2.“

2) Remove the clutch assembly from the flywheel.

1.2. INSPECTION

(1) Inspection of the clutch disk

Check the clutch disk for wear or cracks on the facing,loose rivets,broken torsion springs,

1) Measure the suppression of the rivets, if the suppression is 0.2 mm or less and cracks or burnt damage are found on the surface,the disc must be replaced.

Rivet suppression Usable limit

0.2mm(0.008in)

Fig. 4-4

Note:

When removing the bolts,loosen them gradually in diagonal sequence.

Take care not to let oil get on the clutch facing.

4-3

Fig. 4-5

Note : Be sure to replace any clutch disc which has

0.2mm(0.008in) or less in rivet suppression.

Use of a insufficient rivet depression disc will result in serious damage to the flywheel and the pressure plate.

2) Any oil stained clutch disc must be replace.

However,a very small oil stain may simply be removed by use of a volatile solvent.

Note : The causes of oil stains must be located and necessary corrective measures must be taken.

Fig.4-6

3) Hardened lining surfaces must be repaired by use of a sandpaper,or be replaced with a new ones.

(4) Inspection of other parts.

4) When loose rivets are found,replace the clutch disc assembly because those of rivets will loosen again even if they are retightened.

Inspect the release levers,return springs,lever plates,clutch cover assembly, and lever bolts for wear,damage,and deformation,and replace parts which exhibit abnormalities.

5) Install the disc on the input gear and inspect the rotational play. If the measurement deviates from the specified value, replace the disc.

1.3. REASSEMBLY

Reassemble them in reverse order of disassembly in accordance with the following instructions.

Rotational play of the hub spline

Usable limit

0.3mm(0.012in)

6) Measure the deviations of the clutch disc.If the measurements are beyond the usable limits, replace the clutch disc assembly.(Fig4-6)

1) Be sure to keep oil off of the clutch disc,the pressure plate,and the flywheel.

2) Apply a thin coat of molybdenum disulfidebased grease to revolving or sliding parts prior to reassembly.

Note : Be sure not to apply too much grease because this will cause clutch slippage.

Surface deviation

Lateral deviation

Vertical deviation

Usable limit

0.5mm(0.019in) or less

1.1mm(0.043in) or less

1.0mm(0.039in) or less

3) When installing the clutch disc on the flywheel,turn the longer protrusion of the hub towards the flywheel.The reverse installation will damage the clutch cover or the disc.When installing the clutch assembly,use a special tool.

4-4

2.CLUTCH SHAFT AND RELATED PARTS.

(1) disassembly

1) Remove the tension spring and extract the sleeve

2) Remove the wire which is retaining the taper pin.

Fig.4-7

4-5

①Bar set ②Release fork

③Taper pin ④Wire ⑤Grease fitting

3) Remove the grease fittings from the clutch shaft ends.

4) Turn the release fork upward and pull out the taper pin.Then draw the clutch shaft.

(2) Inspection

1) Inspection of release bearing

The release bearing is of the grease-sealed type,but when the grease in the bearing reaches a low level or the bearing does not turn smoothly due to damage or seizure, replace the bearing.

Note:

The release bearing should not be washed.

2)Inspection of sleeve

Ensure smooth movement of the sleeve.If it does not move smoothly,clean and grease it.

Use heat-proof grease.

3) Inspection of tension springs.

If there are some broken tension springs, replace them.

4) Inspection of the fork.

Inspect the contact faces of the fork and the sleeve.If there is abnormal wear,make repairs or replace the fork or the sleeve.

3.FINAL ADJUSTMENT OF THE CLUTCH PEDAL

Clutch pedal play

1) Loosen the lock nuts on the clutch rod and adjust the clutch rod length to achieve 30∼40

㎜

(1.18 ∼1.57 in.) pedal play.Retighten the lock nut securely.

Note:

One lock nut has a right hand thread and the other has left-hand threads,so take care not to interchange them.

38

±mm

5) Inspection of the clutch shaft.

The clutch shaft must be revolve smoothly

(3) Reassembly

Reassemble the disassembled parts in reverse order of disassembly,pursuant to the following instructions.

30mm

1) Each sliding part should be coated with heat-proof grease.

securely with wire.

3) Smooth movement of each part should be conformed.

4) The release bearing must be installed in the correct direction.

Fig 4-9 Release bearing

Fig 4-10 Main clutch

Note:

Adjust the turnbuckle through the opening in the panel with the rubber cap removed.

2) Adjust the clearance between the safety switch and the bolt head to 38

±1㎜(1.496 in.) so that the switch will turn on only when the clutch is disengaged to allow the engine to start.

3) Inspect the clutch action.

- Inspection of clutch action and slippage.

While the engine is running,the transmission gears must be shifted smoothly with the brakes applied.

- Inspection of clutch slippage

While accelerating the engine gradually, the engine must stop when the clutch is engaged gradually with the parking brakes applied and the speed shift levers to 4X4.

4-6

SECTION 4. TROUBLESHOOTING

1.PROBLEM :Clutch slippage.

The initial stage of clutch slippage is very hard to notice,but the following symptoms

1) The tractor is not generating adequate power when performing heavy duty operations.

2) Output is not commensurate to increate in engine speed when the engine is accelerated suddenly during operation.

3) Increased fuel consumption.

These symptoms are apt to be mistaken for engine problems. Clutch slippage that is not repaired will result in serious damage such as excessive wear of the clutch facing,the clutch cover, and even flywheel or clutch seizure.

TEST METHOD

If the parking brakes are applied and the transmission gears shifted to top speed and the engine stops,then the clutch is normal.But if the engine does not stop,it shows that the clutch is slipping.

Probable causes

-No play in the release bearing

-Broken or fatigued pressure spring

-Excessive wear of clutch facing

-Oil stained or hardened clutch facing

-Deviation of flywheel or pressure plate

Adjust

Replace

Countermeasures

Replace

Repair or replace

Repair or replace

2.PROBLEM :Poor disengage

When the clutch does not disengage properly,the transmission gears make noise when shifted,or shifting or the gears is difficult.

Probable causes

-Worn or rusted splined section of the clutch disc hub

-Excessive deviation of the clutch disc

-Insufficient play of the release bearing

-Excessive play of the release bearing

-Dried pilot bearing

Countermeasures

Remove rust or replace and apply grease

Replace

Adjust

Adjust

Replace

3. PROBLEM :juddering

Probable causes

-Oil-stained clutch facing

-Fatigued pressure springs

-Hardened clutch facing

-Deviation in clutch facing

-Deviation or deflected wear of pressure plate or flywheel

-Difference in release lever heights

Replace

Replace

Countermeasures

Replace

Repair or replace.

Replace

Adjust

4-7

4. PROBLEM: Abnormal noises

There are abnormal noises emanating from the clutch.

Probable causes

-Broken or insufficiently lubricated release bearing

-Seized or worn pilot bearing

-Cracked disc plate

Countermeasures

Replace

Replace

Replace

5. PROBLEM: Dashing or shifting

The tractor does not starting moving smoothly but dashes or is likely to stop when the clutch is operated during a operation.

Probable causes

-Oil stained clutch facing

-Worn clutch facing or loose rivets

-Deviation or deflected wear of flywheel or pressure plate

-Fatigued pressure spring

Countermeasures

Replace

Replace

Repair or replace

Replace

4-8

Chapter 5

Transmission

SECTION 1.GENERAL DESCRIPTION----------------------------------5-1

1.Wheel driving system--------------------------------------------------------5-1

2.PTO drive system------------------------------------------------------------5-1

3.Power train diagrams-------------------------------------------------------5-1

4.Construction and function of synchromesh mechanism-------------5-6

SECTION 2. SPECIFICATIONS--------------------------------------------5-8

1. Wheel drive system----------------------------------------------------------5-8

2. PTO drive system------------------------------------------------------------5-8

SECTION 3.DISASSEMBLY,INSPECTION,AND REASSEMBLY-5-9

1. Input shaft and reverse change gear(Front transmission) --------

2. PTO clutch -----------------------------------------------------------------

3. Main change,sub-change,and 4WD change gears.------------------

5-9

5-16

5-19

05

5. Shifters and related parts-----------------------------------------------5-38

SECTION 4. TROUBLESHOOTING------------------------------------5-47

1. Wheel drive system-------------------------------------------------------

2. PTO drive system----------------------- ---------------------------------

3. Power train diagrams----------------------------------------------------

5-47

5-48

5-49

Chapter 5. Transmission

SECTION 1. GENERAL DESCRIPTION

1. WHEEL DRIVE SYSTEM

The wheel driving system is composed of the following major components:

Front transmission

Reverse change gears

(Linear shift mechanism)

Transmission

Space transmission

Main Change gears

Sub-change gears (speed range)

Front drive change gears

Rear transmission

Ring gear

Differentials

Fig.5-1 Wheel drive system

1) The standard transmission produces 16 speeds forward and reverse : F1 and R1 by reverse change gears;; 4 speeds by main change gears; 4 speeds by sub-change gears.

2) Synchromesh transmission has 3rd and 4th speed stages of the main change gears synchronized.

Therefore, between these stages, gear shifting while traveling is possible (synchromesh version)

Note : 1st and 2nd speed stages of main change must be surely stopped traveling.

2. PTO DRIVE SYSTEM

1) The PTO drive system is composed of the independent PTO clutch and the PTO change gears.

2) The PTO change gears are housed behind the ring gear, which produce

1 PTO and 2 PTO

speed.

3. POWER TRAIN DIAGRAMS

Refer to page 5-49 and 50 at the end of this chapter

5-1

4. CONSTRUCTION AND FUNCTION OF THE SYNCHROMESH MECHANISM

1) Construction

① Spline Hub

②Spring( Synchro)

④Key,synchro

⑤Coupling,synchro

⑥Inner, synchro /shuttle

⑦In-Con,synchro/shuttle

⑧Outer, synchro /shuttle

The synchromesh mechanism includes the components staged below

Fig.5-14 Synchromesh

Coupling Synchro

The synchro-hub is composed of

① Spline Hub

②Spring( Synchro) ④Key,synchro

⑥

⑦In-Con,synchro/shuttle ⑧Outer, synchro/shuttle

Coupling Synchro(5)has a spline friction surface on its circumstance .Key synchro (4) prevents coupling (5) from sliding until the torque, imposed upon the Key due to the speed differential caused when shifting gears,disappears.

Thrust piece(6)is composed of an outer split pin and an inner and is held together as one unit by the expansion force of the key .It has a separated shape as shown in Fig.5-14 when the coupling is position to side and also serves as a lock Key to keep the synchro mechanism engage.

Spline Hub

It has a splined friction surface which forms a pair with coupling synchro(5).It meshes with the gears and through the splined part.

2) Function principles(operating procedures)

The synchromesh mechanism operates in the 2 stages mentioned below to complete the transmission from NEUTRAL to

ENGAGEMENT

5-6

Neutral stage:

When force(F) is applied to neutral through the gear shift lever, coupling sleeve and synchro ring rotated with shaft following movement of the hub,other parts such as 1 st

Gear and 2 nd gear rotated freely also move in the same direction by means of spread spring without allowing the hub to clear the groove in thrust piece until such time as the friction surface of synchro-ring comes into contact with the friction surface of synchro-cup

Fig. 5-16

Neutral

stage

Engage stage:

At the moment when both the friction surfaces come into contact,the ring turns by as much as the surplus space in hub for block pin as shown in Fig.5-5

Fig. 5-17 Engage stage

5-7

SECTION 2. SPECIFICATIONS

1. WHEEL DRIVE SYSTEM

Model

Speed shift range

Reduction ratios.

Linear shift

Main speed shift

Speed range shift

Drive pinion-Ring gear forward reverse forward reverse

1st

2nd

3rd

4th

LL

L

M

H

T433

16

16

1/ 1

1/ 1.35

1/ 2.1

1/ 1.58

1/ 1.03

1/ 0.87

1/18.81

1/6.61

1/3.16

1

1/ 4.10

T503

←

←

←

←

←

←

←

←

←

←

←

←

←

Operation methods

Linear shift

Main speed shift

Speed range shift

Oil capacity

Transmission case

2) PTO DRIVE SYSTEM

MODEL

Speed shift range

Standard

Option

Reduction ratios.

Standard

Column shift

Side shift (RH)

Side shift (LH)

35ℓ(9.24 US gal)

T433

1

2

1 step :1/4.83

Option

PTO shaft speeds Standard

Option

PTO shaft size

Rotational direction

PTO clutch

No.of clutch plates

2 Step : 1 / 2.50

538

538/1040

Ø35mm(1 3/8 in) 6-splines

Clockwise viewed from the rear

Wet, multi-disc, hydraulic-operated clutch

Friction plate : 7, Clutch plate : 6

5-8

←

←

←

←

←

←

←

←

T503

←

←

←

T553

←

←

←

←

←

←

←

579/1120 538/1040

← ←

←

←

←

←

←

←

T553

←

←

←

←

←

←

←

←

←

←

←

←

←

SECTION 3.

DISASSEMBLY

, INSPECTION, AND REASSEMBLY

1. Reverse change gears and Main shift gears (FRONT TRANSMISSION)

5

6

7

8

3

4

1

2

9

10

11

12

13

SEAL , OIL D

BEARING , BALL

SPACE

WASHER

GEAR , SPUR 20T

BEARING , NEEDLE.ROLLER

DOUBLE SYCRO ASSY

COUPLING , SYCRO

HUB , SYCRO SHUTTLE

KEY , SYNCHRO

SPRING , SYCHRO

GEAR , HELICAL 29T

SHAFT , INPUT DRIVE

19

20

21

22

23

24

15

16

17

18

SPACER , NEEDLE BERAING

BEARING , NEEDLE.ROLLER

SHAFT , INPUT PTO

O-RING , P

C-RING , HOLE

PLATE , SEAL

STOPPER

BOLT , HEX/S

BEARING , BALL/HL1

BUSH

Fig.5-20,Reverse change gears

Double coupling ,Synchro

5-9

1. Reverse change gears and Main shift gears (FRONT TRANSMISSION)

Synchro. Main Sub assy

Fig.5-21,Main shift gears

1.Bearring,Ball 2.Washer,25X46X3 3.Bush 4.Gear Spur 28T 5.Synchro main Sub assy

6.Gear,Helical 29T 7. Bush 8.Washer 9.Gear Helical 42T 10.Bush

11. Coupling 12.Hub 13.Gear,helical 38T 14. C-ring, shaft

15.Collar 35X50X2 16.Bearing, ball 17.Gear Helical 14T

18.Bearing,Needle Roller-K243013 19.Snap Ring ,C type

5-9-1

1.1 DISASSEMBLY

(1)Removal of Bolts and related parts separate the engine from the front transmission referring to the paragraph 3 of SECTION 4. SEPARATION OF

MAJOR COMPONENT in Chapter 2.

a. Remove the Bolts in the front transmission b. Separation of the front transmission and the spacer transmission.

Note : Be careful not to damage the seal ring of the sleeve. c. Separation of the reverse metal from the spacer transmission d. Pull out the Reverse change assembly.

(Refer to the next page) e. Pull out spring pin from input shaft. f. Remove the snap ring C g. Pull out Reverse change gears and Main shift gears

(2) Removal of the PTO clutch assembly

Separate the hydraulic cylinder case from the rear transmission referring to the paragraph 7

COMPONENT in Chapter 2.

a. Remove of the hydraulic cylinder assembly b. Remove of the cover 1 in the spacer c. Remove of all parts around the shaft 1 and the shaft 2.

d. Pull out the snap ring next to the PTO clutch assembly.

e. Push the shaft 3 rearwards with holding the

PTO clutch assembly with the other hand.

Fig.5-21 Reverse change gears and Main shift gears

PTO clutch assembly

Fig.5-23

Note : Be careful not to damage the seal ring of the PTO clutch assembly

When the PTO clutch assembly is troublefree, keep it aside, without disassembling it, in a Clean, dust- free place

5-10

5

9

10

11

2

3

4

12

13

14

15

16

17

LEVER COMP , BAR 12

BOLT , SET SEAL LOCK

NUT , HEX/2

GRIP , PTO

PLATE , 19X396

PIN , SPLIT

C-RING , HOLE

BEARING , BALL

COUPLING , 36X62

C-RING , SHAFT

SHAFT , INTERMEDIATE

CLUTCH ASSY , PTO

BEARING ,

NEEDLE.ROLLER

Fig.5-24 PTO and the lever

5-11

32

34

35

36

28

29

30

31

37

38

41

19

20

22

25

26

WASHER , PLAIN

PIN , SPLIT

O-RING , P

C-RING , SHAFT

ARM COMP

WASHER , PLAIN

NUT , HEX FINE/2

STAY , SHIFTER PTO

O-RING , P

BOLT , SET M8X16

FORK , SHIFTER 1

BALL , STEEL

SPRING , SHIFTER

ARM COMP

BOLT , SET SEAL LOCK

WASHER , 27X40X2

Fig.5-25. 2 speed PTO change gears

Note : Be careful not to damage the seal ring of the PTO clutch assembly When the PTO clutch assembly is trouble- free, keep it aside, without disassembling it, in a Clean, dust- free place

Fig.5-25 PTO change gears

5-11

(3) Disassembly of reverse shaft and related parts.

a. Pull out the snap ring(13)to the gear(14) b. Remove the bearing(36 and 33) c. Remove the washers(15 and 22), needle bearings(17 and 20), synchro- hub comp,(35), etc. synchro-cup(34) can be taken off as an assembly with gears(16 and 21).

d. Remove the snap ring(37) and detach the synchro- cup.

Idle and counter gears

Double coupling ,Synchro

1.2 INSPECTION

Synchro. Main Sub assy

Before and after disassembly, inspect each part for points mentioned below, and replace if necessary.

Inspection items

Backlash of each gear

(measured in meshed condition)

Stepped wear of teeth

Assembled width of synchromesh assembly

Dimension A

Synchro-hub thrust for shifting

Neutral-Engaging

Standard values

0.1 - 0.2

㎜

(0.004-0.008 in)

0

㎜

(0 in)

51.17

㎜ (50.746~51.27)

(2.015 in)

13.0-18.8 Kgf

(28.7-41.5 lbs)

Usable limits

0.3

㎜

(0.011 in)

0.3

㎜

(0.012 in)

-

9.5 Kgf

(20.9lbs)

-Inspect bearings such as ball bearings and needle bearings for abnormalities in rotation such as irregularity, hitching, etc. by turning them with pressure applied by hand.Replace defective ones.

-Seriously worn or damaged parts should also be placed.

5-12

1.3 REASSEMLBY

(1) Sub Assembly of reverse shaft and related parts.

Fig.5-26

7. Double synchro assy 12.Gear,Helical 29T 13.Shaft,input Drive 14. Oil seal

23.Bearing,Ball/HL1 24.Bush

a. Install Double Synchro-Assy(7) on gear Helical 29T (12) and gear spur 20T(5) respectively b. Double Synchro-Assy(7) and above sub- assemblies on shaft input Drive(13)

Note : As each synchromesh assembly maintains a specified installed width, be sure not to mix different pairs of the synchro-hub comp, and the synchro-cup c. Install washers and install the bearings positively.

Note : As these washers have their own directions of installation, be strict to install them correctly.

5-13

(2) installation of each sub-assembled shaft.

a. Refer to the description for all parts around the front transmission

Idle and counter gears

Double coupling ,Synchro

Fig.5-27 b. Installation of the main change gears and the reverse gears.

Install each sub-assembled shift into the reverse metal.

Synchro. Main Sub assy

Fig.5-28 Reverse change gears

5-14

Fig.5-29 Main change gears

e. Sub-assembly of the sleeve metal with the release bearing and the drive shaft

Note : Apply grease to the sleeve and the Bar set.

1.Bar set 2.Release fork 3.Taper pin 4.Wire 5 .Grease fitting

21.Hub,sleeve 22.Bolt Hex 27.Sleeve 28. Bearing release 29. Spring, Tension 31

Fig.5-30

(3) installation of the reverse change lever and related parts.

Reassemble in reverse order of disassembly, following the next instructions.

a. Install the reverse gear assembly from the spacer transmission referring to the description

(Fig 5-27), (Fig.5-28), (Fig.5-291) b. Oil seals should be installed in their correct direction., be careful not to interchange these seals.

c. Apply grease to the O-ring and the oil seal, the needle bearing to prevent its damage.

1

2

4

5

3

5-15

2. PTO CLUTCH

2-1. DISASSEMBLY

(37), (38), (40) RBB

(39) NB (44) Snap ring

(45) Back-up plate

(46) Disc assembly

(47) Driven plate

(48) Piston

(51) Seal ring

(52) Seal ring

(53) Cover assembly

(54) Seal ring

Fig.5-32 and install it taking care not to damage these rings.

Note : Disassembly of the PTO clutch assembly should be done in a clean, dust-free place.

Exercise special attention to avoid damage of the seal rings, etc a. Pull out PTO drive shaft rearwards.

b. Pull out PTO drive gear forwards.

c. Remove snap ring (D95 for hole), and take bake-up plate,disc assembly,and driving plates.

d. While holding return spring compressed with a special tool, remove snap ring e. Disassemble into separate parts; piston, return sparing, brake disc, and cover assembly.

2.2 INSPECTION

a. Cover assembly

-Replace a cover assembly which has a damaged or worn sliding surface.

-If there is any damage to the cover assembly and the piston seal ring,these parts should also be replaced.

b. Disc assembly

- If the thickness of a disc assembly exceeds the usable limit mentioned below or combined width of the disc assembly and driven plate is less than

28.8mm(1.13) in), replace both the disc assembly and driven plate.

Fig.5-33

5-16

-Inspection for disc thickness and serration wear.

Inspection

Items

Disc thickness

Surface flatness

Specified values

2.6

±0.1mm(0.102 in)

(7pcs)

-

Usable limit

2.4mm

(0.094 in)

0.2mm

(0.008 in)

Fig.5-35 e. If the combined thickness of the return plate and brake disc deviates from the specified value, replace both parts.

Fig.5-34 c. Driven plate

-Inspection for deformation and burning.

-A seriously damaged or worn disc should be replaced.

Inspection Items Usable limit

Plate thickness

Specified values

1.6

±0.05 mm

(6pcs)

1.5mm

(0.059 in)

Surface flatness 0.15mm

(0.006 in) d. Brake disc

-Inspection for deformation and burning.

-A seriously damaged or worn disc should be replaced.

Inspection Items Specified values Usable limit

Disc thickness 3

±0.1mm

(0.118 in)

2.7 mm

(0.11 in)

Surface flatness 0.2mm

(0.007 in)

Inspection Items

Combined thickness of return plate and brake disc

Specified values

5.5

±0.16mm

(0.217 in)

Fig.5-36

Usable limit

5.1mm

(0.2 in) f. Also inspect other parts for wear and deformation and replace them if necessary

Note : Seal ring and the two seal rings should be replaced as a pair

5-17

2.3 REASSEMBLY

Reassemble the parts in reverse order of disassembly,following these instructions.

Note:

-Each parts should be washed clean before reassembly.

-Apply multi-purpose, quality grease to needle bearings in advance.

-Each bolt and nut should be tightened to the respective specified torque table.

-Every time a gear is installed, its smooth rotation should be checked.

-Every snap ring should be seated securely in its groove.

a. When installing seal rings, apply fresh oil ahead of time and install them carefully so as not to damage them.

b. Install the return plate with the press-processed side turn towards the brake disc.

e. Install the snap ring in correct direction.

f. After reassembly, check to see that gear turns smoothly by locking the PTO clutch

3 2 1

① PTO clutch assembly

② Ball bearing(6005)

③ PTO hub

Fig.5-38

Note : Be careful not to damage the seal ring of the

PTO clutch assembly When the PTO clutch assembly is trouble- free, keep it aside, without disassembling it, in a Clean, dustfree place

Fig.5-37

① Return plate ②Brake Disc c. When installing the return spring, use a special tool; the snap ring should be securely seated in the groove.

d.When pushing the RBB’s (6205 and 6005) into the gear,be careful only to push their outer races.

seal ring

5-18

3. MAIN CHANGE, SUB-CHANGE, AND 4WD CHANGE GEARS.

(1)Synchromesh transmission version.

Fig.5-39 Synchromesh transmission version

5-19

Fig.5-39 Reverse change gears, Main change gear and related parts.

5-20

3.1 DISASSEMBLY

Cylinder case

Rear transmission case

Rear axle housing RH

Spacer transmission case

Front transmission case

Rear axle housing LH

Fig.5-40

Separation the spacer transmission case and rear transmission case from each other referring paragraph 3 in SECTION 4.SEPARATION OF MAJOR COMPONENTS in chapter 2.

With this operation, the transmission is divided into the front transmission and the spacer transmission.

The front transmission includes the main speed shift, and the spacer transmission includes sub-speed shifting and 4WD shifting mechanisms.

Note : The separation of the gears mentioned in the figure is possible without dividing the spacer transmission and the rear transmission from each other

5-21

(1) Disassembly of main change gears(main speed shift), part of sub-change gears(speed range shift) and shifters.

a. Set the cut away part of the gear so that it clears the gear as shown in Fig.5-42

Crescent cut away

Fig.5-41 b. Remove the reverse cable and pin.

c. Pull out the reverse Hook, main speed shift gears, and shifters rearwards by tapping it with a plastic hammer.

Note : Take care not allow the gear to drop as it d. Remove the shift stays from the shift metal and remove the gears assemblies as shown

Fig.5-43.

d. Remove bearings and gears from each shaft.

Crescent cut away

Fig.5-42

Note : Make sure that the turning lock of the

PTO clutch is securely seated in the groove in the Rear transmission case.

Fig.5-43.

5-22

(2) Disassembly of the sub-change gears

(Speed range shift)

a. Remove the sub-shifter and shifter stay.

b. Pull out the PTO shaft , 4WD shaft and gear

Fig.5-44 Stay Shifter comp

Shift fork comp

c. Remove the snap ring from the end of the pinion gear shaft d. Remove the hub e. Remove the sub-change gears.

Fig.5-45

Fig.5-46 Sub-change gears and the shafts

Fig.5-47 break down the Sub-change gears and the shafts

5-23

3.2 INSPECTION

Before and after disassembly,inspect each part for points mentioned below,and replace if necessary.

Inspection Item Standard Value

Backlash of each gear(measured in meshed condition) 0.1-0.2mm(0.004-0.008in)

Stepped wear of teeth

Synchro-hub thrust for shifting

Neutral →Engaging

Thrust play of fixed gears

Wear in each shifter

0mm

14

±0.5 Kgf

(30 lbs)

0 mm

Usable limits

0.5mm

(0.020 in)

0.3 mm

(0.012 in)

9.5 Kgf

(20.9 lbs)

0.5 mm

(0.020 in)

0.5 mm

(0.020 in)

- Inspect bearings such as ball bearings and needle bearings for abnormalities in rotation such as irregularity, hitching, etc. by turning them with pressure applied by hand.Replace defective ones.

- Serious worn or damaged parts should also be replaced.

3.3 REASSEMBLY

Reassemble the parts in reverse order of disassembly, following these instructions.

Note:

-Each part should be washed clean before reassembly.

-Apply multi-purpose,quality grease to needle bearings in advance.

-Each bolt and nuts should be tightened to the respective specified torque in accordance with the tightening torque table.

-Every time a gear installed, its smooth rotation should be checked.

-Every snap ring should be seated securely in its groove.

-As each synchromesh assembly maintains a specified width,be sure not to mix different pairs of the synchro-hub comp. and the synchro-cup.

-Remember to install the snap rings .

5-24

(1) Installation of main change gears

PTO shafts

5-25

Fig.5-46

a. While holding the gear in the position shown in the drawing,install the assembly of the main change gears and related parts in position by tapping it slightly on the front of a plastic hammer and then the gears by tapping it on the rear.

b. Sub assemble the shifter stay,spring, and steel ball(Fig.5-44) on the reverse change lever and install the sub-assembly on the shift stay c. Align the holding parts in the reverse change lever with RBB’s of the sub assemblies of the counter gears and main change gears, straight pins, etc., and install the reverse change lever on the spacer transmission case.

Note :

-Align the cut-away part of gear to clear the gear

-When installing the O-ring, take care not to damage it or allow it to fall

When installing main change Shifter stays,take care not to mix them: shifter with longer dimension A should be installed in the lower position

Shifter forks and tightening bolts should be installed in a position about 180

°apart from each other

Spring pins should be retained with wire and each wire should be twisted in the position illustrated

Fig.5-48

Spring pin ends should be driven in until their ends become flush with the shifter surfaces

Note :

-Install spring(roll) pins so that their seams are positioned as illustrated in Fig.5-49

Fig.5-49

5-26

(2) Reassembly of sub-change gears

(speed range shift)

-Reassemble the parts in reverse order of disassembly following next precautions.

a. Never forget to install needle roller bearing and collar.

b. Pay attention to the installed direction of gear

4WD drive

Fig.5-51

Sub-change gears

5-27

c. Be sure to install the sub-change shifter

Shift fork comp

Fig.5-52

5-28

4. Rear transmission case

Fig.5-53. 2 speed PTO version

5-29

Apply adhesive

Apply grease

3-1. DISASSEMBLY

Separate the spacer transmission and the rear transmission from each other and then remove the hydraulic cylinder case. referring to paragraph 5 of SECTION 4. SEPARATION OF MAJOR COMPONENTS in

Chapter 2.

(1) Ring gear, Drive pinion, and related parts.

Fig.5-54

1.Diff case 2. Spring pin 3. Washer spring 4. Bolt Hex fine 5 Pin ,spring 6.Pinion Diff

7. Collar pinion 9.Pinion bevel 16T LH 10 Washer ,thrust 11.shaft diff pinion

12 Pinion bevel 16T RH 13.Metal diff case LH 15. Shim B (t=0.2)

16. Bolt 17 Bearing ball 18 Shim A (t=0.1) 19.Gear set 10-41T

20.Shim 0.1 21.shim 1.0 22.Nut,M40 P1.5 23.Bearing taper roller

24. Shim 0.2 26.Collar,thrust 45X68X4 28. Pinion LH Helical 11T 29. Pinion RH Helical 11T

30. Bearing Ball 32. C-ring 34.Sleeve 35. Bearing Ball 37 C-ring

39 Shaft,Diff Lock 43. Fork Diff lock 46.Pedal Diff lock

5-30

a. Remove the diff-lock parts.

1 2 3 4 f. Remove the bolts, and the ring gear can then be separated from dif-cases g. Pull out the diff pinion shaft and take out the dif-pinions and dif-side gears.

1

3 2

1.Pedal comp.Diff lock 2. Spring,Diff lock pedal

3. Fork Diff lock 4.Shaft,Diff lock

4

1.Diff-pinion shaft 2,3.Spring pin 4.Sleeve comp.

Fig.5-57

Fig. 5-55 b. Dismount the diff-case (RH) and the snap ring

(LH) by installing push bolt as shown in Fig.5-55 c. The number of installed shims should be written down or memorized for later reference.

Note :

When assemble the spring pin, be sure the spring pin should be different direction (Ø5 and Ø8) h. Remove the pinion metal tightening bolts and take put drive pinion and related parts as an assembly. i. Release the lock of nut and remove the nut

1.Shim A 2.Shim B 3.Metal Diff case LH

4.Bolt

Fig. 5-56 d. Remove ring gear as a set.

e. When disassembling the ring gear set further, remove bearing with a puller.

5-31

Fig.5-58 j. Push out drive pinion from drive pinion metal on a press.

k. Remove the bearing from the drive pinion with a special tool.

(2) PTO shaft and related parts(2 speed PTO version).

PTO gears

Fig.5-59

1.Gear helical 12-20 13. Gear helical 58T

16.Gear helical 50T 18.Shaft output PTO

PTO Shift

2. Lever comp,Bar 12 30.Stay shifter PTO a. Remove the rear hitch to the top link b. Remove the change arm(28) c. Remove the PTO shifter stay(1) rearwards and take out the PTO shifter(4) d. Be alert to the steel ball which mat spring out of the shifter. e. Pull out the snap ring and related parts rearwards.

f. Remove the PTO shaft, the gears and related parts.

5-32

Fig.5-60 Top view of rear transmission

4.2. INSPECTION

Before and after disassembly, inspect each part for the items mentioned below. Parts which deviate from the specified values should be replaced.

-Wash clean all disassembled parts and check them for wear, damage, deformation, Burning , etc. Defective parts should be corrected or replaced.

-As the drive pinion and the ring gear make a pair, they should be replaced together even if only one is found to be defective.

-Backlash between the drive pinion and the ring gear

Backlash 0.1-0.25 mm

(0.004-0.009 in)

-Backlash between the diff-pinion and the dif-side gear.

Backlash 0.13-0.2 mm

(0.003-0.008 in)

(1) Drive pinion

(2) Tapered roller bearing

(3) Drive pinion metal

(4) Tapered roller bearing

(5) Nut ( M40X1.5

)

Fig.5-60 b.Be sure that the starting torque of the drive pinion meets the specified level.

Starting torque 0.11-0.13 Kgf.m

(0.792-0.936ft.lbs) thrust collar for wear, defective collars should be replaced.

-Disengaging the resistance of PTO shifters.

Standard Value

Usable limit

* Measured at the shifter

18-22 Kgf (40-49lbs)

17 Kgf (38 lbs)

4.3. REASSEMBLY

Reassemble the parts in reverse order of disassembly, following these instructions.

(1) Ring gear, Drive pinion, and related parts.

a. Apply oil to the drive pinion and related parts ahead of time. Then install them and tighten the assembly to the specified torque.

Tightening torque

(M40x1.5pitch)

1.4 Kgf.m (9.36 ft.lbs)

5-33

Fig.5-61 c. After the starting torque has been adjusted to the specified level, crimp the lock of the nut at one point as illustrated.

Fig.5-62 d. Tighten the drive pinion metal by providing it with the same shimming thickness that it had when it was disassembled.

When the drive pinion or the ring gear has been replaced, the proper number of shims to be installed should be determined based upon the following procedure:

Drive pinion metal tightening torque

5.5-7 Kgf.m

(39.8-69 ft.lbs)

Ring gear tightening torque(M10x1.25-25)

5.5-7 Kgf.m

(34.5 ~ 43.9 ft.lbs)

Apply lock-tight

Note:

- As shown in Fig5-64, there are two kinds of differential side gears. Although are case hardened, the one installed on the side of the diff-lock is treated further and colored black.

Take care not to mix them when assembling.

- Apply multi-purpose, quality grease to the parts mentioned below: (Three bond-1901)

• Tooth surfaces of diff-pinions and dif-side gears

• Friction surfaces of diff-pinion shafts and diff-pinions.

f. The Backlash between diff-pinion and dif-side gear should be within as range of 0.1 to 0.25mm

(0.004-0.009 in) and these parts should turn smoothly.

Fig.5-63

Fig.5-64 diff gear comp.

5-34

15.Shim(B) 18.Shim(A) 20.Shim(0.1)

21.Shim(1.0) 24.Shim(0.2) g. Install the differential gear assembly.

Diff-case metal tightening torque.

(M10x1.5-30 )

5.5-7 Kgf.m

(39.8-69 ft.lbs)

Note : When reassembling the used pinion and ring gear, reinstall the same thickness of shims as was installed before disassembly in each shimming position. h. Backlash adjustment between the drive pinion and the ring pair (Fig5-65) i. As the drive pinion and the ring gear make a pair, be sure not to mate them with other parts from differential tractors.

ⅱ

0.1-0.25 mm (0.004-0.009 in).

The standard shimming is 0.5mm (0.016 in) on both sides.

Adjust the shimming to backlash

Fig.5-66

5-35

Note : Strike the circumference of the ring gear both sides with a copper hammer by turning the ring gear manually,and check to see that the backlash remains unchanged. The backlash should be checked at four points 90 degrees apart to each other.

Apply an even coat of oil-dissolved minimum on the drive pinion teeth and turn the drive pinion on the ring gear to check the tooth bearing by observing the bearing traces on the ring gear.

Correct Contact

When drive pinion and ring gear are meshed correctly with each other and their backlash is within specified range,contact is in middle of ring gear tooth and is approximately 75% of total tooth width.

Tip contact

Excessive backlash.Move differential case and shims from right side to left side.See”Assembly and installation”.

Root contact

Toe contact

Heel contact

Inadequate backlash.Move differential case shims from left side to right side.See”Assembly and installation”.

Too little engagement.Remove some drive pinion support shims.See Transmission:REAR TRANSMISSION

ASSEMBLY-Setting cone center.

Too much engagement.Add some drive pinion support shims.See TRANSMISSION:”REAR TRANSMISSION

ASSEMBLY-Setting cone center.”

INSTALLATION OF A NEW PAIR OR RING GEAR AND DRIVE PINION

1. use a new pair of ring gear and drive pinion delivered from the manufacturer.Never mix its components with those of other pairs.

Note : Every ring gear-dive pinion pair is adjusted and inspected for tooth contact individually at factory.

2. Adjust the backlash between the ring gear and drive pinion to be 0.1-0.25mm(0.004-0.009 in) by shimming the drive pinion metal and right and left dif-case metal and make sure that their tooth contact is proper

5-35

(2) PTO shaft and related parts(2 speed PTO version).

a.Pushing the PTO counter gear end into the bearing until the stop on the gear is securely seated against the bearing.The seal should be coated with an adhesive (THREE BOND TB1215) on the circumference before installing.

b.Install the oil seal on the PTO shaft,paying attention to its installed direction.

c.After installation,the slide coupling should smoothly slide and mesh with the designated gears.

Apply adhesive

Apply grease

5-36

5. SHIFTERS AND RELATED PARTS.

5.1. CONSTRUCTION

(1)Forward and reverse control linkage mechanism(Linear speed shifter)

(synchromesh transmission version)

Fig.5-69

1.Hook comp, reverse 2.Arm comp 3.Pin,taper split 4. Plate 5.Bolt

6.Stay shifter/Reverse 7.O-Ring(P) 9. Hook shifter reverse 10.Spring shifter 11.Ball,steel

12.Cable sub reverse 14. Bush 15. Lever comp, shuttle 16.Grip reverse 21. Pin

23. Pin split

5-37

(2) Main change mechanism(Main speed shift)

(Synchromesh transmission version)

15.Bolt

19.Fork,shifter 3-4

20.Fork shifter 1-2

21.Bolt drain

22.C-ring

23.Seal

24.Pin

25.Spring(C020)

26.Boot

27,28.Wire steel

29.Grip main

31.Lever,shaft main

34.Lever,Bar 16

35.Bolt

36.Pin

Fig.5-70

Note : The bolt tightening the bottom of the metal should be coated with an adhesive ahead of time

5-38

Fig.5-71

1.Stay,shifter 1-2

2.Stay shifter 3-4

3.Pin,spring

4.Wire steel

5.Spring shifter

6.Ball steel

7.Link

8.Link

9.Bolt,sealock

10.Pin(10X28)

11.E-Ring

12.Guide

13.Bolt

14.Metal main

(3) Range shifter (Speed range shift) mechanism

1.Stay(shifter,sub)

2.Fork(shifter,sub)

(Low)

3.Hook(Shifter,sub)

(High-Mid)

4.Steel ball

5.Shifter spring

6.Guide

7.Bolt(S)

8.Metal (SUB)

10,12.Bolt

17.lever(Bar,16)

18.Bolt

19.Snap ring

20.Seal

21.Spring

22. Pin

23.Boots

24.Wire

25.Sub shift speed grip

27. Wire

28.lever(bar/16)

29.Bolt

30.Nut

32.Nut(Fine)

(4) Front drive change (4 WD shaft) mechanism

Fig.5-76

Fig.5-77

5-40

1.Shaft,4WD

2.C-Ring,shaft

3.Gear spur 26T,4WD

4.Gear spur 27T,4WD

5.Seal,Oil

6.C-ring D

7.Bearing Ball

8.C-ring,shaft

1.Metal(shifter)

2.Shifter spring

3.Steel ball

4.Bolt

5.Nut

6.Washer spring

7.Arm comp

8.O-ring

9.Arm comp

10.Spring pin

14.Grip,4WD

15.Washer plain

16.Nut

17.Pin

19.Pin,split

20.Rod assy

(5) Rear PTO shift mechanism(2 speed version)

1.Gear helical 12-20 13. Gear helical 58T

16.Gear helical 50T 18.Shaft output PTO

1 2 3 4

2. Lever comp,Bar 12 30.Stay shifter PTO

34.Fork shifter 1 37.Arm comp

Note :

-Pay attention to the installed direction of the metal

-Apply lock tight

-Apply three bond (TB1215)

-Pay attention to the installed direction of the oil seal

Fig.5-80 PTO 2 speed version

5-41

(7)

REAR PTO counter shaft mechanism(2 speed version) a. REAR PTO counter shaft

Fig.5-81

1.Gear Helical 12-20. 3.Bearing Ball/HL1(6305HL1) 4. Bearing Ball/HL1(6306HL1) 5.PTO clutch

Note:

- When pushing the bearing (6305, 6306) into the gear(12-20), be careful only to push their inner races.

- Every time a gear is installed, its smooth rotation should be checked.

5-42

b. Rear PTO shaft(2 speed version)

6307HL1

Gear helical 50T

C-ring Oil seal

PTO shaft

Ball bearing((6305HL1)

Sleeve

Ball bearing (BL207)

Fig.5-82.Rear PTO shaft

Note : The snap ring C should be securely seated in the groove and the press-processed side turned towards the outer side.

When installing the O-ring to the PTO sleeve and the oil seal, take care not to damage it or c. Rear PTO shift stay

9. Plate,19X396

10.Split pin

30.Stay shifter PTO

31.O-ring

34.Fork shifter 1

35.Ball,steel

36.Spring ,shifter

37.Arm comp

38.Bolt,set seal lock

Fig.5-83.Rear PTO shift stay and related parts

5-43

(8) Drive pinion Sub assembly

Fig.5-84

Note:

a.Apply oil to the drive pinion and related parts ahead of time. Then install them and tighten the assembly to the specified torque. b.Be sure that the starting torque of the drive pinion meets the specified level.

(9) Differential gears.

(Fig5-86)

1.Diff case 6.Pinion Diff 9.Pinion bevel 16T LH 11.shaft diff pinion

12 Pinion bevel 16T RH 13.Metal diff case LH 17 Bearing ball

19.Gear set 10-41T 22.Nut,M40p1.5 23.Bearing taper roller

26.Collar,thrust 45X68X4 28. Pinion LH Helical 11T 29. Pinion RH Helical 11T

30. Bearing Ball 34.Sleeve 35. Bearing Ball 37 C-ring

39 Shaft,Diff Lock 43. Fork Diff lock 46.Pedal Diff lock

Note:

1.When assembling without replacing the pinion gear and ring gear with new ones, provide the same shimming thickness as that provided before disassembly.

2.Backlash between diff-pinion and diff-side gear should be within as range of 0.1 to 0.2mm

(0.004-0.008 in) and these parts should turn smoothly.

3.When reassembling the used pinion and ring gear, reinstall the same thickness of shims as was installed before disassembly in each shimming position.

4.Backlash adjustment between the drive pinion and the ring pair(Fig5- 66) As the drive pinion and the ring gear make a pair, be sure not to mate them with other parts from differential tractors.

5.Adjust the shimming to backlash of 0.1-0.25 mm (0.004-0.009 in)

5-45

5-2 PRECAUTIONS FOR DISASSEMBLY, INSPECTION, AND ASSEMBLY

(1) Disassembly

When drawing a shifter stay from its shifter,be careful not to lose the steel ball.It can jump out of the shifter.

(2) Inspection

-Shifter –disengaging load:

Main change and sub change : 18-22 Kgf (40-49lbs)

4WD change, Creep change : 25-29 kgf (55-64 lbs)

-Usable limit of shifter-disengaging load:

Main change & Sub-change : 17 Kgf (38lbs)

4WD change, Creep change : 24Kgf( 53lbs)

-Wearing limit of each shifter: 0.5 mm (0.02 in)

(3) Reassembly

a.lubricate the grooves in the shifters.

b.Each shifter should be installed in the correct direction.

c.When installing the shifter on the shifter stay, Use the special tool as shown in Fig.5-87

Fig.5-87

5-46

SECTION 4. TROUBLESHOOTING

1. WHEEL DRIVE SYSTEM

Problems

Transmission makes noise in neutral

Causes

Insufficient or improper lubricant

Countermeasures

Replenish or replace

Excessive splines of change shaft,spline hub,etc

Worn or broken bearings

Slide couplings interfering with the gears due to worn or deformed shifters

Replace

Replace

Replace

Gears make a noise when shifted.

Improperly disengaged clutch Repair or replace

(Clutch pedal play)

Replace

Gears disengage by themselves

Wear in width of gears,splined hubs,collars,etc

Defective Change shift fork

Broken shifter springs

Wear in width of gears,splined hubs,collars,etc

Replace

Replace

Replace

Worn shifters Replace

Gears do not engage or Improper disengaged shift lever disengage

Gears are locked due to foreign matter between them Remove the foreign matter

5-47

2. PTO DRIVE SYSTEM

problem

PTO does not spin with PTO shifted to ON

Causes

PTO shift lever is in neutral

PTO spins but does not produce sufficient torque.

PTO does not stop when PTO switch is shifted to OFF

Defective PTO switch

Clogged PTO valve

Poor Pump

Defective solenoid valve

Worn clutch disc

Broken or fatigues seal ring at clutch sleeve

Loose joint or broken O-ring of delivery valve

Poor pump

Clogged PTO valve

Defective PTO valve solenoid

PTO follows too much when

PTO switch is shifted to OFF

Broken clutch piston return spring

Poor switch

Improper oil

Insufficient warming up

Poor PTO clutch brake

Weak or broken piston return spring

Poor PTO valve( contamination)

Deflected clutch plate

Counter measures

Shift lever positively to

ON replace

Wash clean

Replace

Replace

Replace

Replace

Retighten or replace

Replace

Wash clean

Replace

Replace

Replace

Replace

Let tractor warm up sufficiently

Replace

Replace

Wash clean

Replace

5-48

Power train diagram(A3)

Fig.5-88

5-49

CHAPTER 6

FRONT AXLE

CHAPTER 6. FRONT AXLE(4WD)---------------------------------------6-1

SECTION 1.GENERAL DESCRIPTION---------------------------------6-1

SECTION 2. SPECIFICATIONS-------------------------------------------6-2

SECTION 3.DISASSEMBLY,INSPECTION,AND REASSEMBLY6-3

1. Center pivot-----------------------------------------------------------------

1-1. Disassembly--------------------------------------------------------------

6-3

6-4

1-2. Inspection----------------------------------------------------------------6-4

1-3. Reassembly--------------------------------------------------------------6-4

2. Front differential-----------------------------------------------------------

2-1. Disassembly--------------------------------------------------------------

6-6

6-7

06

2-3. Reassembly--------------------------------------------------------------6-8

3. Final case--------------------------------------------------------------------

3-1. Disassembly--------------------------------------------------------------

3-2. Inspection----------------------------------------------------------------

3-3. Reassembly--------------------------------------------------------------

6-10

6-11

6-12

6-13

SECTION 4.TROUBLE SHOOTING-------------------------------------6-15

Chapter 6 Front axle(4WD)

1. GENERAL DESCRIPTION

The 4WD front axle is a center pivot type. The front wheel drive mechanism is incorporated as a part of the axle.

The front wheel drive power is taken off the rear transmission and transmitted to the differential in the front axle where the power is divided into right and left and to the respective final cases.

In the final cases, the transmitted revolution is reduced by the bevel gears to drive the front wheel.

The 4WD mechanism with bevel gears provides wider steering angle and greater durability.

Front axle support

Axle housing assy

6-1

Fig 6-1

SECTION 2. SPECIFICATIONS

Wheel alignment Toe-in (mm)

Camber

Front axle

Caster

Pivot metal (F) bore (mm)

Pivot metal (R) bore (mm)

Pivot metal (F) bush (mm)

Pivot metal (R) bush (mm)

Housing (F) Diameter (mm)

Housing (R) Diameter (mm)

Front wheel steering angles(RH)

Front wheel steering angles(LH)

T433/T503/T553

2 ~ 6 mm

3

°

1

°

Φ 55

Φ 80

50X55X20

75X80X30

Φ 50

Φ 75

52 ˚

52˚

Fig.6-2

6-2

SECTION 3. DISASSEMBLY,INSPECTION,AND REASSEMBLY

1. CENTER PIVOT

Fig.6-3

1.Housing,front axle 3.Plug,square 4. Connector 5. hose assy 530

6. clamp worm 14.5 8.Metal pivot 10.Spacer(F) 11.O-ring

12. Bolt, Hex 13.Nut,hex 14.Washer seal 23.Bolt,hex

24.Washer spring 31.Metal Pivot 34.Bolt,Hex 35.Washer spring

37.Washer 50.Cap,Oil 54.O-ring 64.O-ring

65.Spacer,R 68.Shim Set A 69.Shim set B

6-3

1.1.DISASSEMBLY

1) Dismount the front wheel drive shaft, referring to the pertinent paragraph in chapter 2.

2) Remove the right and left Hydraulic hose.

3) Suspend the front axle bracket with a chain.

4) Remove the front metal and rear metal clamping bolts. The front axle can then be separated from the axle bracket.

5) Remove the front and rear pivot metals.

Pivot metal (R)

1.2.INSPECTION

Pivot metal (F)

1) FRONT AXLE SHAFT DIAMETER

Measure the diameter at a roll bush contact point with a micro-meter or vernier calipers. If the measured value is less than usable limit, replace the housing front axle or bush in Metal pivot (F) or

Metal pivot (R) .

Standard value as assembled

Front

Ø50 rear

Ø75

Fig.6-4

2) FRONT AXLE BUSH BORE DIAMETER

Measure the bore diameter of the roll bush in the pivot metal(F). If the measured value exceeds the usable limit, replace the bush.

Front

Standard value as assembled Ø50

Usable limit rear

Ø75

Ø50.35

Ø75.35

Fig.6-5

6-4

Fig.6-6

1.3 REASSEMBLY

Reassemble the parts in reverse order of disassembly, following these instructions.

1) Lips of the oil seals, bush contact surfaces, and O-rings should be coated with grease in advance.

2) When installing the roll bushes, abide by the following precautions.

-Use an installer and press in the bush on a press.

-The bore surface should be coated with grease in advance.

-The shim of the roll bush should reach position as shown Fig.6-7. In other words the seam should be in a position which is free from any load.

Front axle support

Pivot Metal (F)

Front axle housing

Fig.6-7

Note:

Slanted or forced installation of the bush should be avoided,and the bore surface of the bush should not damaged.

3) Pay particular attention to the installed direction of thrust collar,that is,with the sharply-edged face turned towards the bevel gear case.

4) When the thrust collar has been replaced or the fore-and aft play of the front axle exceeds the usable limit,correct play by screwing in the adjust bolt on the top of the pivot metal(F).

Fig.6-8

Note:

After correcting the pivot metal play, tighten the lock nut of the adjusting bolt to a torque of

11.7~13.7KN-m (12~14 kg-m)

5) The reassembled front axle should rock smoothly while pivoting.

toe-in should be adjusted.At the same time, the steering angles of the both wheels should also be adjusted.

7) Be sure the dimension C and D is same size and Adjust E and F as same dimension.

Tightening torque(M20x1.5p) : 24~26kg.m

Fig.6-9

6-5

2. FRONT DIFFERENTIAL

Fig.6-10

18.Seal,oil/D 20.Diff assy FF 21.Pinion Bevel 8T 22.Pinion Bevel 23T

23. Case FR Diff 25.Pinion,Diff(12) 26.Collar,thrust 27.Gear,Diff side(20)

28.Washer,thrust 29.Pin,Spring 31.Shaft,Diff Pinion 32.Pin spring

33.Bearing ball 34.Snap ring 43.C-ring 45.Shim A

46.Shim B 47.Bearing,Taper Roller 48.Collar 51.Nut,M30

65.Bearing ,Ball 66.Shim

6-6

2.1 DISASSEMBLY

1) As concerns operation prior to removal of the front axle,refer to the paragraph covering disassembly of the center pivot

2) Remove both wheels

3) Remove the drain plug from the final case and drain oil from the final case.

4) remove both final case assembly (A and B) from the front axle( Fig.6-11)

Diff case

Note:

The number of shims(1) installed and the the shimming thickness should be noted for later reference.

6) Remove the bearings from the Axle housing

And the ring gear,and then the ring gear can be separated from the Axle housing.

7) Remove the straight pin which retains the axle housing.

Note: Discard the removed straight pin and oil seal and install a new pin and Oil seal when reassembled,because this pin and oil seal is apt to be damaged when removed.

8) Remove the snap ring and the bevel pinion can then be removed together with the

TRB’s (Fig.6-11)

9) When separating the TRB’s from the bevel pinion,release the calking of the lock nut and remove the bearings.

Lock Nut

Snap ring seal

Bevel pinion

Fig.6-11

5) Remove the oil seal,assuring parallelism of the ring gear and bearing

Fig.6-13

Note:

The lock nut should be calked at a point completely apart from the threads may damage the threads of the bevel pinion.

2.2 INSPECTION

1) visually check the bearing surfaces of the bevel pinion and ring gear teeth.

Note:

The bevel pinion and the ring gear should be replaced as a pair.

2) seriously worn or damaged parts should be replaced.

Fig.6-12

6-7

2-3.REASSEMBLY

Reassembly the parts in reverse order of disassembly,following these instructions.

1)Each friction surface should be coated with grease in advance.

2)The bevel pinion and the ring gear make a distinct pair after a mesh adjustment performed at the factory. Consequently, when reassembling the pair,be sure to pair parts with a same reference number.

-Tighten the lock nut to the specified starting torque of the single unit of the bevel pinion.

-When any of the bevel pinion,ring gear,TRB, collar,etc.has been replaced, inspect the bevel pinion assembly for thrust play in the front axle housing.

Specified thrust play mm(in)

0.13-0.2

(0.005-0.0078 in)

Note:

TRB and collar should be replaced as a pair.

(1) Bevel pinion (8)

Lock Nut

Fig.6-15

(2) FRONT DIFF CASE

Bevel pinion Assy Starting torque adjustment gauge

Note:

Fig.6-14

As a general rule,a disassembled lock nut should be replaced and a new one should be installed.However,when there is no alternative but to reuse the disassembled lock nut assure that it can lock securely.

Note:

Measure the starting torque a manner as shown in the figure 6-14.

Specified starting torque

11 -13 Kgf-cm

6-8 fresh Molybdenum grease ahead of time.

b.Apply fresh Molybdenum grease to teeth of diffpinion and diff-side gear. c.Each parts should be washed clean, and There should be no sharp edge to the surface of thrust washer.

d.When assemble the spring pin, Be sure the spring pin should be different direction (Ø5 and Ø3) e. When any of the bevel pinion, ring gear, TRB, collar, etc. has been replaced, inspect the bevel pinion assembly for thrust play in the front axle housing.

Specified thrust play mm(in)

0.13-0.2

(0.005-0.0078 in)

3) DIF CASE AND BEVEL PINION

Fig.6-16

18.Seal,oil/D

21.Pinion Bevel 8T

43.C-ring

45.Shim A

46.Shim B

47.Bearing,Taper Roller

48.Collar

51.Nut,M30

66.Shim

Fig.6-17

1) Each friction surface should be coated with grease in advance.

2) The bevel pinion and the ring gear make a distinct pair after a mesh adjustment performed at the factory. Consequently, when reassembling the pair,be sure to pair parts with a same reference number.

3) When installing the TRB’s from the bevel pinion,Be sure the calking of the lock nut and the bearings.

4) Install the snap ring and the bevel pinion can then be installed together with the

TRB’s (Fig.6-17)

Note: Discard the removed straight pin and oil seal and install a new pin and Oil seal when reassembled, because this pin and oil seal is apt to be damaged when removed.

5) Install the bearings from the Axle housing

And the ring gear, and then the ring gear can be assembled from the Axle housing.

6) Install the straight pin(4) which retains the axle housing.

7) When any of the bevel pinion, ring gear, TRB, collar, etc. has been replaced,inspect the bevel pinion assembly for thrust play in the front axle housing through drain plug hole.

Specified thrust play mm(in)

0.13-0.2

(0.005-0.008 in)

6-9

3. FINAL CASE

3-1. Front gear case 1,2

Fig.6-18

1.Case,Final Drive (A) 2.Gear Bevel 9 3. Bearing Ball/HL1 4. Pin Parallel

5.Bolt 6.Washer spring 7.Gear,Bevel 16 8.Bearing,ball

11.Case,LH Final Drive 13. Case,RH Final Drive 15. Seal 16.Bearing Ball

17.Shaft 18. Gear, Bevel 11T 19.Bearing,Ball 20.O-ring

23. Cap 90 25.Shaft,528 26.Shaft ,344 30.C-ring

31.Collar,68X80X2 36.O-ring 40.C-ring 41.Bearing,Ball

42.C-ring 43.Plug,square 45.Shim 75X90X2 46.C-ring

49.Nut

6-10

3-2. Front gear case 3.

Fig.6-19

3.1 Disassembly

1) Drain oil from the final case by removing the drain plug.

2) Remove the tie rod or the tie rod end.

3) Remove the final drive case clamping bolts and take out the assembly of the wheel shaft,

4) Remove the wheel shaft cover clamping bolts and cap (100)

Note:

Discard the removed Cap(100) and install a new cap(100) when reassembled,because this cap is apt to be damaged when removed.

5) Detach the snap ring C from the bevel gear.

6) Extract the wheel shaft bearing together with the bevel gear,using a bearing puller

6-11

Fig.6-20

14. Gear Bevel 38T

15.C-ring

17.Seal

18.Bearing Ball/HL1

19.Bearing,Ball

20.Cover,wheel shaft

30.O-ring

31.Bolt,Hex

34.Shaft,wheel

35.Washer,50X60X2

Fig.6-21

7) Remove the stop ring and the wheel shaft can be extracted.

9) Remove the cap (23) from the bottom of the final case B and detach the snap ring(hole).

Then the counter shaft(17) and RBB can be removed.

Note:

The removed cap(90) (black plug) should be discarded and replaced when reassembled.

3.2 INSPECTION

1) Wheel shaft cover

- Inspect mechanical oil seal,O-rings, Gears, cases,etc. and replace them if worn or damaged.

-Measure the diameter the part which makes contact with the wheel shaft,with a micro-meter or vernier-calipers.When the measured value less than the usable limit,replace the wheel shaft cover.

Standard value

Usable limit

62

61.9

Fig.6-22

8) Remove the seal from the wheel shaft cover

Fig.6-24

2) Final Drive case (B)

-Measure the diameter the part which makes contact with the Final drive case (A),with a micro-meter or vernier-calipers.When the measured value less than the usable limit, replace the wheel shaft cover.

Standard value

Usable limit

110

110.1

Fig.6-23

Fig.6-25

6-12

3.3 REASSEMBLY

Reassemble the parts in reverse order of disassembly, following these instructions.

1) Apply an adhesive (THREE BOND TB1215) to the following parts.

a.Contact surfaces between the final case B and wheel shaft cover. b.Contact surfaces between the final case A and front axle.

2) The installed wheel shaft should turn smoothly.

3) When installing unitized seals on the wheel shaft cover and the rotating part between the final cases (A and B),apply force only to the outer circumference of the seal as shown in

Fig.6-26 to avoid deformation.

Take care not to deform these portions

Fig.6-26

4) The oil seal should be coated with grease in advance.Then install them carefully,assuring that their lips are not turned over.

5) The reassembled final case (B) should turn smoothly until it makes contact the stopper.

6) When the wheel(tire) is reinstalled,turn it by hand to make sure that all the mechanism turns smoothly without making any noise.

7) After adjustment of the toe-in,perform road tests.There should be no abnormalities such as vibration,abnormal noises,defected steering wheel operation,etc.

-

Wheel shaft cover

1) Every snap ring(6) should be seated securely in its groove.

2) Be sure the numbers of Bevel gear is correct

Fig.6-27

-Final drive case A

1) Each parts should be washed clean before reassembly.

2) Apply multi-purpose,quality grease to bearings in advance

3) Every time a gear and bearings are installed, its smooth rotation should be checked

4) Adjust Back lash between bevel gear (38T) and bevel gear (11T) with collar(35) .

Back lash mm(in)

0.1-0.2

(0.003-0.008 in)

5) Apply oil to the housing ahead of time to install the mechanical seal.

6) Be sure that the length of shaft.

7) Tighten the bolts to the specified torque.

Tightening torque 550-700Kgf.cm

8) Adjust backlash between gear bevel and gear bevel (2) with collar

Back lash mm(in)

0.1-0.2

(0.003-0.008 in)

9) Apply an adhesive to the Cap (90),and be sure not to deform when installing.

Note: Refer to Fig.6-23

6-13

- FINAL DRIVE CASE AND HOUSING - STEERING CYLINDER

Fig.6-28

1) When installing the shaft,Be sure that the gears are not damaged.

2) Be sure the differences between the LH and

RH shaft.

Specified length

LH

528mm

RH

344mm

Fig.6-29

3) Tighten the bolts to specified torque.

Tightening torque 1300-1500 Kgf.cm

Fig.6-30

1) When installing the steering cylinder,Be sure that the rods are not damaged.

2) Install the pin(21) before assembling the cylinder.

3) Apply an adhesive Locktite and tighten the bolts to specified torque

Tightening torque 900-1100 Kgf.cm

4) Apply an adhesive locktite to the ball joint (7) and tighten the ball joint to specified torque

Tightening torque 2400-2600 Kgf.cm

5) Be sure to bend the split pin (5) after installing the ball joint

6-14

SECTION 4. TROUBLE SHOOTING

PROBLEMS AND PROBABLE CAUSES

● Steering wheel hard to turn

1)Too low tire inflation

2)Broken thrust bearing

3)Stuck or broken ball joint of tire-rod end

4)Seizure or poor lubrication of axle end bush

● Vibrating or pulling steering wheel

1)Unbalanced wheels

2)Wheel deflation

3)Unequal diameter of both tires

4)Loose,worn,or damaged wheel axle bearing

5)Loose,worn,or damaged wheel steering wheel shaft

6)Worn final case bush

7)Loose final case-front axle tightening bolt

8)Loose front wheel(tire)tightening nuts1)

COUNTERMEASURES

Inflate to specified value

Replace

Grease or replace

Grease or replace

Adjust balance

Repair or replace

Adjust inflation or replace

Repair or replace

Retighten or replace

Replace

Retighten

Retighten

● Steering wheel tends to turn to the right or left while traveling on straight paved road.

Adjust inflation or replace

Replace

2) Different tire diameters

3) Damaged final case bearing

● Excessive or eccentric wear of tire

1)Improper tire inflation

2)Worn front wheel shaft bearing

3)Poorly adjusted toe-in

4)Front wheel drive is always engaged

● Noise

1)Loose fasteners

2)Worn or damaged final case bearing

3)Worn bush

4)Wear or poor movement of tie-rod end

5)Excessive backlash of differential and bevel gear

● Different steering angles in both directions

1)Lengths of RH and LH tie-rods are different

Adjust

Replace

Readjust correctly:0~5mm

(0.08-0.24 in)

Engage FWD only when required

Tighten correctly to specified torque

Replace

Replace

Lubricate or replace

Adjust

Adjust

6-15

CHAPTER 7

Rear axle and brakes

SECTION 1.GENERAL DESCRIPTION----------------------------------7-1

SECTION 2. SPECIFICATIONS--------------------------------------------7-2

SECTION 3.DISASSEMBLY,INSPECTION,AND REASSEMBLY-7-3

1.Rear axle housing and brake system-------------------------------------7-3

1.1. Disassembly----------------------------------------------------------------7-4

1.2. Inspection-------------------------------------------------------------------7-4

1.3. Reassembly-----------------------------------------------------------------7-5

SECTION 4.TROUBLE SHOOTING---------------------------------------7-7

Chapter 7. Rear axle and brakes

1. GENERAL DESCRIPTION

The rear axle system is of the central axle type,which contains the final reduction gears, differential gears with diff-lock,and brakes. The power from the engine is transmitted to the right and left wheel pinions through the differential gears,and reduced in the revolution to the rear wheels by the wheel gears. A wet,multi-Disc, mechanical operated brake system is employed.Each of the brakes has 5 friction plates and can produce significant braking force with excellent durability. The two actuators work to push their friction plates in opposite directions,that is,outward,so that stable braking force can be realized in both forward and reverse movements of the tractor. A dif-lock mechanism which is housed in the right-hand rear axle housing is employed to lock the differential gears and is activated by depressing the diff-lock pedal, resulting in the same rotary speeds of both wheels.

Fig.7-1

7-1

SECTION 2. SPECIFICATIONS

Final reduction gears

Friction

Plate

MODEL

Type

Reduction ratio

Type diameter

Brake system

Separator

Plate

Thickness

Lining material

Number of plates

Outer diameter

Thickness

Number of plates

Metal brake assembly Installed

T433

Helical gears

4.9

T503/T553

←

←

Wet, multi-disc, Mechanically operated

Φ 140(Φ5.5in)xΦ180mm(Φ7.0 in)

3.4

±0.1 mm(0.134 in)

Paper base

4 on each side

Φ 188mm(Φ7.4 in)

2.5

±0.09 mm(0.098 in)

3 on each side

34.9

±0.1 mm(1.374 in)

←

←

←

←

5 on each side

←

←

4 on each side

29

±0.1 mm(1.142 in)

Total brake thickness 42.2

㎜(1.661in.)

54

㎜(2.126in.)

7-2

SECTION 3.DISASSEMBLY,INSPECTION,AND REASSEMBLY

Separate the rear axle housing from the rear transmission referring to paragraph 6 of SECTION 3.

SEPARATION OF MAJOR BLOCKS in Chapter 2

1) REAR AXLE HOUSING AND BRAKE SYSTEM

2.Return spring

3.Steel ball

4.Brake disk comp

5.Separate plate

6.Brake metal LH

7.Brake cam

8.Metal Brake RH

9.Oil seal

10.Bolt

11.Cam Brake

12.Spring washer

13.Nut

15.C-ring

16.Torque pin

18.Yoke pin

19.Washer

20.Split pin

23.Rod,Hook

26.Brake metal low RH

28.Brake metal upr RH

30.Brake ,LH

31.Brake,RH

7-3

Fig.7-2

1.Housing(Axle,LH)

2.Housing(Axle,RH)

3.6.Bolt

7.Washer spring

8.Nut

10.Oil gauge

13.Wheel shaft

15.Helical gear(54T)

17.Colar

18.Oil seal

20.Taper roller bearing

22. Nut

23.O-ring,P

1.1 Disassembly

1) Remove the brake cover tightening bolts and remove the disc brake assembly on it.

2)The actuator can be disassembled by removing

Spring

3) Detach the brake arm and the cam from the brake cover (Fig.7-2)

4) Pull out the snap ring from the brake housing.

5) Remove the pinion gear.

6) Extract the bearing with a puller and Release the lock of Nut.

7) Remove the wheel gear

8) Remove the wheel shaft with a hammer

9) Be careful to keep the mechanical seal and the taper roller bearing

Note : Removed the Oil seal should be replaced with a new one when reassembled

Be careful to keep the friction surfaces of the linings, Actuators and separator plates free from damage and foreign matter.

1.2. INSPECTION

1) Friction plates.

Replace the plates whose surfaces have been become glossy by carbonization or whose thickness exceeds the usable limit.

Fig.7-4

Standard thickness:mm(in) 3.4

±0.1(0.134)

Usable limit:mm (in) 3.0 (0.118)

Fig.7-3

7-4

Note : Also replace those whose grooves have been worn out completely even if only on one side

2) Actuator (Reference)

Check the ball,spring,pressure plate,and brake rod for abnormality.Replace defective parts. Replace the actuator whose thickness exceeds the usable limit.

Standard thickness :mm

Usable limit: mm

Note: corrected with sandpaper(#1000)

14.9

±0.1

14

Fig.7-5

3) Separator plate.

Measure the thickness and replace the plate whose thickness exceeds the usable limit or whose surfaces are damaged (Fig.7-6)

4) Wheel shaft

Check the shaft for abnormalities like wear, damage, etc, and replace a defective one.

5) Bearings

Check them for abnormalities like hitching, irregularity, etc. in rotation after being washed clean. Replace defective ones.

6) Oil seals

Removed oil seal should be replaced with a new one when reassembled.

1.3 REASSEMBLY.

Reassemble the parts in reverse order of disassembly, follow these precautions.

1) Make sure that oil grooves,friction surfaces,etc of the brakes are free from matter such as dust, iron powder,etc.to avoid brake lining damage.

2) When installing the brake unit on the wheel pinion, friction plates and separator plates should be arranged in correct order and never forget to retain the unit with the snap ring.

tightened to the specified torque with a torque wrench. (Fig.7-7)

Standard thickness:mm(in)

Usable limit:mm (in)

Fig.7-6

2.5

±

0.09

(0.098)

2.2(0.087)

7-5

Fig.7-7

Tightening torque 5.5-7 Kgf.m

(39.8-50.6ft-lbs)

4) Replace the mechanical seal.

Install the taper roller bearing into the axle housing, and the mechanical seal by the special tool as shown in the figure(Fig.7-8)

5) Install the wheel gear and bearing on the wheel shaft and retain them with nut.

6) Apply adhesive (THREE BOND 1215) to the contact surfaces of the brake cover and the housing and then retain the plates by tightening the nuts to the specified torque or the specified dimension.

Tightening torque

Dimension

0.6-0.8 Kgf.m

(4.3-5.8ft-lbs)

9.4

±0.1

Fig.7-8

Take care not to deform these portions

Oil seal

7-6

SECTION 4. TROUBLESHOOTING

Problem

1) Rear axle

Causes

Noises

· Worn or damaged bearing

· Worn gear or wheel shaft

2) Brake system

(1)Insufficient braking force

(2)Brake noise

(3)Brake overheating

· Insufficient depressing of brake pedals

· Improper pedal free play

· Worn friction plates

· Insufficient brake oil

· Broken actuator spring

· Eccentric wear of actuator

· Insufficient oil

· Excessive pedal free play

· Improper operation

· Improper brake pedal free play

(4)Brake cannot be disengaged completely.

(5)Not uniform braking

(6)Excessive pedal play

· Broken pedal spring

· Improper free play adjustment

· Worn actuator ball

· Improper adjustment of brake rod

· Worn actuator-fork tightening bolt

· Worn brake shaft or brake arm countermeasures

Replace

Replace

Depress pedals positively

Adjust

Replace

Replenish

Replace

Replace

Replenish

Adjust

Operate brakes properly

Adjust

Replace

Adjust

Replace

Adjust

Replace

Replace

7-7

Chapter 8

Power assisted steering system

SECTION 1.GENERAL DESCRIPTION----------------------------------8-1

SECTION 2. SPECIFICATIONS--------------------------------------------8-2

2.1 Gear pump------------------------------------------------------------------8-2

2.2 Steering valve---------------------------------------------------------------8-2

2.3 Oil tank----------------------------------------------------------------------8-2

SECTION 3. FUNCTION-----------------------------------------------------8-3

3.1 Open center non load reaction------------------------------------------8-3

SECTION 4.DISASSEMBLY,INSPECTION,AND REASSEMBLY

4.1 major component of steering valve assembly -----------------------8-5

4.2 Special tools----------------------------------------------------------------8-6

4.3 Disassembly----------------------------------------------------------------8-6

SECTION 5. TROUBLESHOOTING-------------------------------------- 8-11

08

Chapter 8. Power assisted steering system.

SECTION 1. GENERAL DESCRIPTION

The hydraulics of this power-assisted steering system are actuated by a specially designed steering valve system.

Non Load reaction valve blocks the L,R cylinder ports in neutral condition and does not transmits the reaction load of the tire to the steering wheel in neutral.Generally the system is used for the vehicles that treat heavy equipment or low speed traveling.

Hydraulic circuit consists of Independent system.

The oil from tank flows into gear pump of orbitrol via filter, and the quantity of oil in the proportion to the rotations of steering wheel flows into steering Cylinder Via "R"-port at right turn and via "L"port at left turn. As follow figure shows components composition of power steering system on the vehicle with the Orbitrol

Fig.8-1

8-1

SECTION 2. SPECIFICATIONS

1) POWER STEERING GEAR PUMP

MODEL

Delivery (cc/rev)

Pump performance

150

(kgf/cm

2

)

Maximum pressure (kgf/

㎠)

Rated operation speed (rpm)

Rotation direction

2) Power steering valve Unit( orbitrol)

MODEL

Model number

Displacement (cc/rev)

T433/T503/T553

1000 rpm

1800 rpm

2600 rpm

10.0

cc/rev (ℓ/min)

6.87LPM

12.36LPM

17.86 LPM

210 kgf/

㎠

500~3000 rpm

C.W as viewed from shaft end

T433/T503/T553

1452-405-400-1B

69

Maximum system pressure (kgf/

㎠)

Max. back pressure (kgf/

㎠)

Max. temperature(℃)

Input torque (Kgf.m)

Main relief pressure setting (kgf/

㎠)

Recommended filtration (ISO4406)

Weight (kgf)

3) OIL TANK

MODEL

TANK

Fluid volume (ℓ)

Fluid

130 (12.7 Mpa)

25 (2.45 MPa)

95

0.1~0.2 kgf.m

130 kgf/

㎠ (at 16ℓ/min)

10

㎛ Nominal

5.5 (12.12lb)

T433/T503/T553

Transmission Case

35ℓ (9.24 US gal)

THF500

8-2

SECTION 3. FUNCTION

1.Open Center Non Load Reaction

1.Neutral Position

When the steering control valve is in the neutral position,inlet flow(P) from the priority valve moves the flow selector spool against its spring.This flow is blocked at the control valve control spool.The signal port is connected to the reservoir(T) through orifices in the control spool.The priority valve will only supply enough oil to the control valve to compensate for internal leakage and maintain low stand-by pressure.The oil at each side of the steering cylinder is connected to each side of the metering pump, this allows a degree of self centering when turning out of a bend.

①

①Steering cylinder

③Steering unit

④rotor

⑤sleeve

⑥Main spool

⑦Check valve

⑨Main relief valve

Fig.8-2 Neutral position

2) Right Turn

When the steering control valve shaft is rotated to the right,the control valve moves off center.This connects the inlet port (P) to one port of each metering pump section and also connects the other port of each metering pump section to the cylinder.The amount that the spool moves off center depends on how fast the steering wheel is rotated and also how much effort is required to turn the wheel.

8-3

Fig.8-3 Right turn position

3)Left turn

When the steering control valve shaft is rotated to the left,the control valve spool moves off center.This connects the inlet port(P) to the one port of each metering pump section and also connects the other port of each metering pump section to the cylinder.The amount that the spool shifts off center depends on how fast the steering wheel is turned and how much effort is required to turn the wheel.

Fig. 8-4 Left turn position

4) Manual steering

When there is no piston pump supply pressure the flow selector is moved to the left by its spring.This connects together the inlet and outlet ports of the lower gyrotor pump and disconnects this pump from the system.When the steering is operated manually,only the upper gyrotor pump section is used to direct flow to the steering cylinder. This reduces operator effort to an acceptable level,however the number of turns from lock to lock is increased.

8-4

Fig. 8-5 Manual steering

SECTION 4. Disassembly,Inspection,And Reassembly

1. Major component of steering valve (Orbitrol)

Fig.8-2

1.Dust seal ring 2. Housing spool and sleeve 3.Ball 4. Ball stop 5.Shaft seal 7.Bearing 10.Ring

11. Cross pin 12.Set of springs 13.Cardan shaft 14.Spacer 15.O-ring 16. Distributor plate

17.Gear wheel set 18.O-ring 19.End cover 20.O-ring 22.Special screw 23. Special screw

24. Name plate 30.Complete relief valve.

8-5

2.SPECIAL TOOLS

A.Holding tool, code no. SJ150L9001-01

F. Fork for fitting cardan shaft (OMM)

SJ 151G9000 -1

B .Assembly tool for shaft seal ø17.5, code no. code no. SJ150L4011 - 01

C. Assembly tool for shaft seal ø19,2, code no. SJ150L4012 - 01

D .Assembly tool for dust seal ring, code no. SJ150L0396 -01

G .Ordinary hand tools.

Socket spanner (5/8 in)

Ratchet spanner, 1/2”

Torque wrench: 0-70 Nm (0-7 da Nm)

Allen keys: 5 & 8 mm a/flats

Small screwdriver, ground sharp.

Pincers

3. Disassembly

Separate the orbitrol referring to Fig.8-2 of

SECTION .Disassembly,Inspection,And

Reassembly

1.Major component of steering valve (orbitrol)

STEP 1.

- Column

If there is a steering column on OSPM, place the unit in the holding tool, on the four locating

pins with steering column upwards. Dismantle the steering column.

STEP 2.

-Pressure relief valve (30, 31)

If there is a pressure relief valve in OSPM, remove the plastic plug from the adjusting screw and unscrew with the 5 mm a/flats Allen key.

Remove the spring and use special pliers-lift the valve cone out of the housing.

E. Pliers for piston in pressure relief valve, code no. SJ150-9000 -25

Lift OPSM clear of the holding tool, turn it so that the output shaft points downwards and place it in the holding tool again.

8-6

Note, the locating pin in the tool must engage with the OSPM housing.

STEP 3.

-Special. Screws (22, 23)

Remove the screws with a 16 mm a/flats

(5/8”) spanner.

-End cover (19)

Remove end cover sideways.

STEP 9.

-Cross pin(11)

Press the pin out of the spool set.

Carefully press the spool out of the sleeve.

-Springs (12)

Press the neutral position springs out of the spool.

STEP 4.

-Gear wheel set (17, 18)

Hold a hand under the gearwheel set to keep the gearwheel from falling out.

Remove O-rings.

-Dust seal (1)

Remove the dust seal ring (with a “sharp” screwdriver).

-Shaft seal (5)

Remove the shaft seal

(with a “sharp” screwdriver if necessary).

STEP 5.

-Distributor plate (16)

Remove distributor plate.

-Cardan shaft (13)

Remove cardan shaft.

4. Cleaning, inspection,replacement and lubrication

STEP 6.

-O-ring (15)

Remove O-ring from housing.

Note: a.Clean all parts carefully.

b.Carefully check all parts and replace imperfect parts, if any.

c.Always replace all sealing parts during a d.Before assembly, lubricate all parts with hydraulic oil and grease rubber parts with

Vaseline.

Shake out check valve ball (not in all units), ball stop and emergency steering ball. Use pincers if necessary.

STEP 7.

Place the OSPM in the tool again. Lift up steering unit and fixture in one piece and turn it

90

° to horizontal.

-Housing/spool/sleeve (2)

Turn the spool set so that the pin in spool and sleeve is horizontal and push it out

5.REASSEMBLY

STEP 1.

-Housing (2)

Place the OSPM housing horizontally in the holding tool, with the hole for the output shaft facing the tool.

STEP 8.

-Bearing (7)

Remove bearing from shaft end.

The outer washer may sometimes adhere to the housing. If the washer does not come out with the shaft, it will come out when shaft seal item

5 is being pressed out.

-Ring(10)

Remove retaining ring for the neutral position springs.

8-7

Note: the locating pin in the tool must engage with in the OSPM housing.

STEP 2.

-Shaft seal (5)

With the assembly tool the shaft seal must into the housing.

Note that the small guide piece at the front of the tool must remain in the hole for the output shaft when the tool itself is drawn out of the housing.

Note: there are two different tools:

One for housings for steering column mounting

(SJ150L4011-01)

One for housings with integrated steering column (SJ150L4012-01).

Note: The ring must be able to rotate unimpeded by the springs.

STEP 6

-Cross pin (11)

Fit the cross pin in the spool set.

-Thrust bearing (7)

Fit the thick race, needle cage and thin race.Lubricate the output shaft on the inner spool with Molykote PG plastslip 75,on the surface in contact with the shaft seal.

-Spool/sleeve (2)

Guide spool and sleeve together, turn the spools so that the key slots are opposite each other.

STEP 4.

-Springs (12)

Insert the curved springs between the flat springs and push them into place (see sketch).

STEP 7

-Housing /spool/sleeve (2) a.With the housing still horizontal in the holding tool - secure it with one hand. With the other hand take the assembled spool/sleeve set, making sure two fingers hold the cross pin (11) in position. Guide the spool set into the housing with the cross pin (11) horizontal.

Note:

Be careful with the small guide piece from mounting of the shaft seal.

With it is pressed out by the shaft rotary.

STEP 5.

Spring retaining ring (10)

Center the springs in the spool/sleeve set and guide the ring down over the sleeve.

8-8 b. With housing and spool set remaining in the tool,lift the whole unit into vertical position.

The pin in the spool set must now point towards port P in the housing, either at 6 o’clock or 12 o’clock.

STEP 8.

-Ball (3)

Place the emergency steering ball in port P.

-Ball stop (4)

Place the ball stop in port P.

-Ball (37)

Place the check valve ball (if required) in port P

STEP 9.

-O-ring (15)

Fit the O-ring in the housing.

-Distributor plate (16)

Place the distributor plate on the housing.

Turn it so that the holes line up.

STEP 10

-Cardan shaft(13)

Fit the cardan shaft into the inner spool and allow it to engage with the pin.

the cardan shaft.

STEP 11

17 Gear wheel

When fitting the gearwheel, it must be oriented correctly so that it engages with the cardan shaft.

The cross pin (11) in the spool set must line up with the bottom of the teeth in the star

(see sketch).

STEP 12

-O-rings (18)

Place the O-rings in the grooves on each side of the gearwheel rim.

-Gear ring ( 17 )

Place the gearwheel rim over the distributor plate so that all holes are in line with each other.

STEP 13.

-Spacer ( 14 )

Place the spacer over the cardan shaft.

-End cover (19)

Place the cover so that the hole marked “P” lines up with port P in the housing(“6 o’clock

” or “12 o’clock”).

STEP 14.

-Special screws (20, 22,23)

Fit screws (with O-rings). Remove the retainer fork. Tighten all five screws

(cross pattern) with 30

± 3 Nm (3 daNm).

Note:

With open center units, the screw with no oil flow connection must be fitted in port E.

If the OSPM must be mounted with a

Pressure relief valve, lift it out of the tool and place it on the four pins with the axle journals upwards.

STEP 15.

-Piston (30)

Fit the piston.

-Spring (31)

Fit the spring.

STEP 16.

-Adjustment (30)

Screw in the adjusting screw.

8-9

STEP 17. (Test) a.Lift OSPM out of the tool and prepare it for testing.

The pressure relief valve can be set either on a test panel or in a system with pressure-gauge read-off.

b.Insert plastic plug.

STEP 18.

Dust seal (1)

Guide the dust seal ring down over the shaft end press into place in the housing with assembly tool. SJ 150L0396 - 01.

Note: The dust seal must be fitted after testing so that any leakage from the shaft seal can be detected.

8-10

SECTION 5. TROUBLESHOOTING

Problems and probable causes

1. Steering wheel is very heavy to turn

.

1) Poor assemble between steering column and unit.

(1) Spline of column and unit are assembled tightly.

(2) Spool of unit is seized by spline of column

(3) Poor rotation of column

2) Insufficient pump pressure or fluid volume

(1) Check pump delivery

(Unit volume

×120 rpm×1.15)

(2) Check oil tank fluid volume

(3) Check pump pressure

3)Trouble internal steering unit valve

(1) Low setting pressure of relief valve

(2) Ball-nut heavy to work

4)Trouble machine mechanism.

(1) Poor link work

(2) Excessive sector gear pre-load

2. Return to neutral is too slow

1) Poor assemble steering column and unit

(1) Poor assemble to center between column and unit

(2) Column assembly face depressed unit bushing

2) Depressed control set (spool+sleeve)

(1) Excessive fluid volume

(2) Excessive pressure

(3) Dust

3) High pressure ratio of "T" port (tank port)

(1) Tank port hall is small

(2) Tank port pipe is linked to other lines

Counter measures

-Replace column spline

-Check column assembly face and spline length (MAX 6.5

㎜)

-Replenish oil or Exchange

-Exchange pump

-Replenish oil

-Adjust relief pressure

-Adjust fluid level properly

-Wash clean or replace

-Wash and replenish oil

-Adjust backlash

-Loosen the bolt and fix again with center

-Replace column or repair

-Adjust fluid level properly

-Adjust pressure

-Wash

-MAX. Pressure ratio 20 bar

-Wash and clean pipe line

-Separate unit pipe line and reinstall

8-11

Problems and probable causes

3. Free play of steering wheel

1)Too low elastic of centering spring

( Remove P port pipe line and check left and right turning)

(1)Damaged spring or poor elastic

2) Depressed control set

(1) Excessive fluid and pressure

(2) Depressed by foreign material

(3) Depressed from external when assemble with column

-Replace spring

Counter measures

-Adjust fluid level and pressure properly

-Wash

-Check column and adjust

4. Steering wheel resistance with turning

(1)Worn of spline gear column

(2)Depressed control set

(3)Air trapped in cylinder and pipe line

(4)Excessive backlash column

(5)Poor turning of column,or wear of bearing .

-Replace column

-Wash,and Adjust fluid level and pressure properly

-Deflate the air

-Adjust column

-Replace column and replenish oil

5.Too much free play of steering wheel(Rough touching on tire causes vibration)

(1)Air trapped in steering cylinder and pipe line.

(2)Worn ball bearing

-Deflate the air

-Replace

6.Free play steering wheel

(1)Insufficient oil in the tank

(2)Worn,damage steering cylinder

(3)Loose spacer in unit

7.Kick-back of steering wheel

(1)Loose check valve in "P" port or don't operate

(2) Trouble in system

-Replenish oil

-Replace oil seal and cylinder

-assemble spacer parts.

-Adjust check valve

-consult workshop

8-12

Problems and probable causes Counter measures

8.Serious kick-back each side

(1)Poor assemble the gyrotor lower the unit -Reassemble

9. Steering wheel is very heavy to begin turning

(1)Oil density is too high or cool -Replace oil

10. External Oil leakage

(1)column

(2)End cap gyrotor

(3)Tightening Bolt

-Replace oil seal,slide ring

-Replace o-ring

-Replace copper washer

(Torque 1st:175

㎏f·㎝. 2nd:280 ㎏f·㎝)

8-13

Chapter 9

Hydraulic system

SECTION 1. GENERAL DESCRIPTION --------------------------------

9-1

SECTION 2. SPECIFICATIONS -------------------------------------------

9-3

SECTION 3. DISASSEMBLY AND ADJUSTMENT-------------------

9-4

1.Hydraulic system -----------------------------------------------------------

9-4

2.Disassembly------------------------------------------------------------------

9-5

3.Reassembly-------------------------------------------------------------------

9-6

3.1 General precautions---------------------------------------------------

9-6

3.2 Reassembly steps-------------------------------------------------------

9-8

4.Adjustment of the link mechanism-------------------------------------

9-9

SECTION 4. MAJOR COMPONENT OF THE HYDRAULIC

SYSTEM --------------------------------------------------------

1.main control valve ------------------------------------------------------

9-11

9-11

3.Pressure control valve --------------------------------------------------

9-19

4.Flow control valve--------------------------------------------------------

9-22

5.Safety valve ---------------------------------------------------------------

9-24

6.Relief valve----------------------------------------------------------------

9-24

7.Gear Pump-----------------------------------------------------------------

9-26

8.Filter-------------------------------------------------------------------------

9-31

09

SECTION 5.Remote hydraulic control(Optional)----------------------

9-32

1.General description------------------------------------------------------

2.Functions ------------------------------------------------------------------

9-32

9-32

3.Specifications--------------------------------------------------------------

9-33

SECTION 6. TROUBLESHOOTING ----------------------------------

9-34

Chapter 9 Hydraulic system

SECTION 1. GENERAL DESCRIPTION

The hydraulic system is composed of a gear pump,valves,oil filter,cylinder(actuator),piping,etc.The implement lift is operated by a control valve which is actuated by the control lever through a link mechanism.

ON and OFF of the PTO is controlled by a hydraulic,wet,multi-disc clutch whose circuit is opened and closed by an electromagnetic valve in the flow-divider.

The construction and circuit of the hydraulic system are shown in Fig.9-1 and 9-2

Fig.9-1 hydraulic system construction

9-1

9-2

SECTION 2.SPECIFICATIONS

MODEL

Lift(at lower link top end) Piston and cylinder

Control valve

Main relief valve

Cylinder port leaks (under a pressure of 9800KPa[(100Kgf/

㎠) with gear oil of SAE 80)]

Cracking pressure

Relief pressure

Gear pump

Delivery(91% efficiency) : liter(cu.in)min at Rated rpm :

T433,T553:2600rpm, T503:2800rpm

Suction filter

Cracking pressure

Working pressure(bar)

Rated flow: (ℓ /min)

Filtration density

Filtration area

T433/T553

1300 Kgf

5cc(0.305 Cu in)

210 Kgf/

㎠

175 Kgf/

㎠

Front Rear

30.5

ℓ /min

16 ℓ /min

145

170

+5

43

150 mesh

6231

㎠

125

130

T503

1300 Kgf

5cc(0.305 Cu in)

210 Kgf/

㎠

175 Kgf/

㎠

Front Rear

32.9

ℓ /min

17.3

ℓ /min

145

170

+5

43

150 mesh

6231

㎠

125

130

Line filter

(Reference)

Rated flow: (ℓ /min)

Filtration density

35

100 mesh

35

100 mesh

NOTE:

Recommendable Transmission oil

Manufacturer :Product

CALTEX :Textran TDH Premium

Texaco :TDH oil

Chevron :Chevron 1000THF

ESSO :Torque Fluid 56

MOBIL :Mobil fluid 423

SHELL :Donax TD

CASTROL :CASTROL AGRI MULTITRANS

TOTAL :Transmission MP

9-3

SECTION 3. DISASSEMBLY AND ADJUSTMENT

1.HYDRAULIC SYSTEM

Fig.9-2

9-4

2.DISASSEMBLY

1)Remove the cylinder case assembly,referring to relevant paragraph in Chapter 2.

Fig.9-4

4) Applying aligning marks on the Lift shaft(26) and right hand lift arm(19),Then remove the arm

Fig.9-2-2

Note:

Put the cylinder case on a wooden plank to prevent the surface from damage.

2) Remove the link pin and extract the related

Lift link .

Fig.9-5

And Draft arm ,Then remove the shaft

Lift Link

Fig.9-2-3

3) Remove the cylinder head and extract the cylinder.Then remove the piston from the cylinder.

Fig.9-6

6) Applying aligning marks on the Lift crank

And Bar ,Then remove Bar

Fig.9-3

9-5

Fig.9-7

7) Remove the set bolt for the lift crank and remove the assembly of the lift shaft and lift arm.

10) Remove the bolt and extract the main control valve bolt

Fig.9-8

8) Remove the assembly of the lift crank and piston rod.

9) Unhook the each link parts and remove the cover main control valve

Fig.9-9 bolt cover main control valve

Fig.9-11

11) Remove the following linkages: a.Each linkage b.position control linkage c.Draft control linkage

3.REASSEMBLY

Reassemble in reverse order of disassembly.

3.1 GENERAL PRECAUTIONS

1) Hydraulic system parts should completely be free from dust before reassembly.

2) All O-rings should be replaced with new ones,which should be lubricated with grease before installation.

3) When the lift shaft is removed,the oil seal should also be replaced with a new one.

4) Install the piston from the cylinder bottom side.The O-ring and and back up ring should be coated with grease ahead of time.Install with care so as not to damage them.

Apply Molybdenum Grease

Fig.9-10

Fig.9-12

Apply Grease

9-6

5) When assembling the lift crank on the lift shaft,mesh their splines using the alignment marks which were put their before

Disassembly

7) When installing the control valve,apply grease to the o-rings and avoid their dislocation or binding during tightening the valve to the specified torque

8) Tighten the slow return check valve to the specified torque

Tightening torque 1000~1200 Kg.cm

Fig.9-13

Fig.9-15

6) Tighten the Main valve securely to the specified torque

Tightening torque 130~180 Kg.cm

Tightening torque

1000~1200 Kg.cm

Fig.9-17

9) Tighten the Exterior valve(remote control valve) to the specified torque

Tightening torque 200~250 Kg.cm

Tightening torque200~250 Kg.cm

Fig.9-18

Fig.9-16

Apply loctite

Tightening torque 130~180 Kg.cm

9-7

4) Install the lift crank temporarily along with the feed back link.Install the piston on the lift crank.

Fig.9-19

3.2 REASSEMBLY STEPS.

1) Install the main control valve

2) Install the clevis comp.

clevis comp

Fig.9-22

5) Install the lift shaft and lift crank together in accordance with the aligning marks on them.

(Fig.9-23).Apply grease to the roll bush.

Fig.9-20

Note:

After installing the clevis to main control valve ,make the installed length of the set the body and plate to be 10mm(Fig.9-20)

3) Install the each link parts.

6) Drive the oil seal onto the lift shaft and install the lift arm.

Note:

When installing the oil seal,take care not to allow the oil seal lips to be damaged by the splines of the lift shaft.

7) Install the cover main control valve and Then install the remote control valve.

Tightening torque200~250 Kg.cm

cover main control valve

Remote control valve

Fig.9-21

9-8

Fig.9-24

4. ADJUSTMENT OF THE LINK MECHANISM.

Fig.9-25

1) Adjustment of the position control link mechanism

Place the cylinder case assembly upside so that the lift arm can be moved freely

Point 2. Fix the clearance between the body and plate on the control valve and the casing spool to be 10 mm,while the gap A should be 26mm (Fig.9-27),while the main spool is set in the neutral position.

Point 1.Set the lift crank to the top position.Adjust the top position installed length of the body and plate is about 10mm or determine the position where the angle of the lift arm from horizontal is 60~ 61.5

°.

Nut

Fig.9-26

9-9

Fig.9-27

26 mm

Point 3.Set the feed back link so that there is no play by the adjusting nut.

Point 4. Apply an locktite to adjusting Nut.

Fig.9-28

Thus the adjustment of the position control linkage is completed.

2) Adjustment of the draft-control link mechanism

Point 1.Shift the draft-control lever to the top position and the position-control lever to the bottom position.

Fig.9-29

Point 2.

With position (A) is 90

° together in accordance with Shifting the draft-control lever to the top position and the position- control lever to the bottom position.

Adjust by loosening the lock nut.

Thus the adjustment of the draft-control link mechanism is completed.

9-10

SECTION 4. MAJOR COMPONENTS OF THE HYDRAULIC SYSTEM

1. MAIN CONTROL VALVE

1.1 GENERAL DESCRIPTION (Reference)

This valve controls the lifting and lowering operation of the hydraulic cylinder. It has especially been developed to control the working height of the implement. It consists of a feed back valve; direction control valve, flow-control unloading valve,and holding check valve.

1.2 SPECIFICATIONS (Reference)

Maximum operating pressure 175 Kgf./

㎠

Maximum flow 45 liters/min

C-port leaks 5 cc/min below

(Fluid temp : 50℃:pressure :100Kgf.cm(1422 psi)

1.3.CONSTRUCTION (Reference)

1) Main spool

it consists of a spool,spool head,and snap ring E and has three functions.

a. It opens and closes passages P to C and C to T and controls the passage wall area successively.

b. It converts unloading pilot pressure to C-port pressure or tank pressure c. It turns the pilot pressure of the pilot spool on or off.

Neutral Position

Fig.9-31

Lowering Position

Fig.9-30

Raising Position

9-11

1.4 DISASSEMBLY AND INSPECTION (Reference)

Fig.9-31

1.5 OPERATION

Port p means “pump port”,and is connected to the pump,while port C means “Cylinder port”, and is connected to the cylinder.Drain ports T1 to T4 are connected to the tank.

1) Neutral position

In the NEUTRAL position,Spring chamber of unloading valve connected to

TANK(T2),Therefore the force imposed upon the right hand side of the unloading valve, then the fluid from the pump flows into TANK(T1).

The pressure in chamber becomes equal to the tank pressure.Consequently the fluid in the C port becomes high,then the check valve and main check valve completely closes the cylinder circuit enough to hold the piston steady.

Fig.9-32

9-12

2) Lifting position

When the main spool is shifted to the lifting position,Passages to the Tank(T2) are closed with unloading spring and the

Fluid from the pump flows into unloading valve spring.,therefore the force imposed up the left-hand side of the unloading check valve,Consequently the fluid in the

T1 port becomes to close the unloading.

The pump delivery fluid pressure open the the loading check valve,then through C port the pump pressure flows into hydraulic cylinder to lift up the lift arm.

3) Lowering position

When Main spool is shifted to the lowering

Tank(T2),and the force imposed up the right hand side of the unloading check,therefore the fluid from the pump flows into the Tank(T1).

Consequently the force imposed up the left hand side of the main check valve,which is connected with Plate-B to open the T3 port.

By this action, the fluid from the cylinder flows out and into the tank through chamber,so the piston is released

Fig.9-33

Fig.9-34

9-13

1.6. SERVICING INSTRUCTIONS

(Reference)

1) Required tools

-6mm set screw wrench and torque Wrench

-19mm spanner and torque wrench

-22mm spanner and screw wrench

-conventional screw driver[3mm(0.12 in) in blade width]

-plastic rod [Ø10mm(Ø0.394 in)]

Oil stone, cleanser, tweezers, etc.

2) Tightening torque

Note:

The spool and stopper bolt are tightened with each other with adhesive applied to their threads, so they should not be separated unless required.

by removing the stopper bolt, the poppet and spring can be taken out of the spool.

-Pilot spool and related parts.

Remove the plugs from both sides and take out the spring and push rod.

The pilot spool set can be pushed out from the push rod side with a Ø10 mm(Ø0.394 in) rod.

When pushing,put the rod on the sleeve, not the spool.

Description

Plug

Plug

Sunk Plug

Spool head

Stopper bolt

Size

M16

M14

Tightening torque

Kgf.m(ft.lbs)

3.5 (25.3)

2.5 (18.1)

PT /4 2.5 (18.1)

M6 0.8 (5.8)

M6 0.8 (5.8)

Note:

The spool and sleeve cannot be separated from each other.

4) Reassembly

-Inspection of the disassembled parts.

Place all the disassembled parts side by side on a clean surface. Check o-rings for damage and

3) Disassembly

-Main spool and related parts.

Remove the snap ring E and draw out the main spool carefully.

Note:

The main spool and spool head are screw-fitted, so they can be separated from each other.But they are tightened with adhesive applied,so they should not be disassembled unless required.

surfaces of the spools,poppets,and casing for flaws like scratches. Correct slight flaw with an oil stone and wash corrected parts in a cleanser.

-Main spool and related parts.

When the head is disassembled,it should be tighten and locked securely using adhesive.

Before retaining the spool with the snap ring E, make sure that the spool slides smoothing within the casing.

-Holding check valve and related parts.

Remove the plug and take out the spring. The poppet can come out only by slanting the casing, and if not, remove it with pliers.

-Holding check valve and related parts

-Unloading valve(1): compensator

Remove the plugs from both sides and take out the spring and spool.

-Unloading valve(2)

Remove the plugs from both sides and take out the spring and spool.

9-14

Put the poppet into hole B as shown in the figure and make sure that the poppet slides smoothly.Then put the spring in and tighten the plug,on which the O-ring must be installed, to the specified torque.

-unloading valve(1) and related parts.

Install the spool into hole C in the correct direction. Put the spring in and tighten the plug to the specified torque.

-Unloading valve(2) and related parts.

Install the spool and confirm that the returns smoothly by the spring force after it is compressed by pushing the stopper bolt end and check that it slides smoothly.

-Pilot spool and related parts.

Be careful not to damage the O-ring during pilot spool installation.After assembly,make sure that the spool slides smoothly by pushing the push rod.

9-15

2.FLOW-DIVIDER( PTO solenoid valve)

2.1 GENERAL DESCRIPTION

This valve is installed to bypass working fluid of a specified pressure from the main circuit into the

PTO circuit through a fixed orifice.It includes a changeover valve for engaging and disengage the

PTO clutch by means of a solenoid and a sequential valve for PTO circuit's over the main circuit.

Fig.9-35

(1)Solenoid

This solenoid is switched on or off by operating the PTO switch. With this lever operation, the solenoid shifts the changeover valve to the left or the right to bypass or block the flow to port B.

(2)PTO changeover valve

This valve is composed of the spool and spring.When the solenoid is switched on,the spool is moved to the left by overcoming the spring force and allows the fluid from the pump to flow from port P to port B through the fixed orifice.

9-16

-When the solenoid is switched

「

The fluid from the pump flows to port B through port P,the pressure-reducing valve,and the changeover valve.

The pressure of the PTO clutch circuit and that of passage(2) are the same and will be set as P₂.The pressurized fluid acts on the left-hand side of the valve,passing through port ; its pressure will be set as P₁.

As passage (1) and passage (2) are interconnected,then P₁=P₂.

The force imposed upon the left-hand side of the valve is P1 whereas the force imposed upon the right side of the valve is P1 plus the spring force.Consequently the spool is pushed leftwards.

Here port A is blocked, so the fluid from the pump is branched off to the PTO clutch.

(1)Passage 1

(2)passage 2

(3)Pressure-reducing valve

Fig.9-36

(5)PTO clutch

(6)To control valve.

-When the solenoid is switched

「

The fluid in the PTO clutch is unloaded to the bank through port B.Consequently pressure P2 at passage(2) becomes zero,whereas the pressure at passage (1) is P1.Then the force imposed upon the left side of spool (P1)overcomes the force imposed upon the right side

(P2+spring force),so that the spool is pushed rightwards to connect port P and part A.

Therefore no fluid from the pump is branched off to the PTO clutch; that is,all fluid flows to the control valve.

Fig. 9-37 PTO solenoid switch

「OFF」position

9-17

3. PRESSURE CONTROL VALVE

3.1. GENERAL DESCRIPTION

This valve is composed of the body, plunger, piston, springs, and plug. It serves to absorb shocks which are given when the PTO clutch engages.

3.2. OPERATIONS

1) When the clutch cylinder is achieved:

When the PTO clutch valve is turned on,the cylinder is activated.Consequently the pressure in circuit does not leave the seat of body(4) because the preset force by spring(8) and spring(9) is larger.Therefore there is no flow of fluid from port B to port T,which means all the fluid from the

PTO clutch leads to the clutch cylinder.

5

6

7

No Part name

4 Body

8

Plug

Piston

Plunger

Spring1

Q’ty

1

1

1

1

1

Spring2 1

2) When the clutch is in half-engaged state:

When the clutch cylinder is completely activated,the pressure in circuit(1) starts rising at point P1 on the graph in Fig.9-42.When the pressure reaches point P2,the piston starts moving to the right overcoming the force of spring(6 and 7).

Here the flow through chock(2) causes some difference in pressure between circuit (1) and chamber (3) . As the effective area of the seat of plunger(7) for circuit(1) pressure and that for chamber(3) pressure are the same,this pressure difference causes the plunger to compress spring(9) to move to the right,which opens the passage from port B to port T1 to prevent the pressure in circuit from rising abruptly.As piston(6) moves to the right,the force of spring(8) increases so much.

Both pressures in chamber(3) and circuit(1) also increases gradually,so the clutch engages smoothly without shocks.

9-19

Fig.9-39 When the clutch is in half-engaged state

Dynamic characteristics

Provided P1=3Kgf/

㎠(43psi)

P2=3.6 Kgf/

㎠(51psi)

P3=5.9 Kgf/

㎠(84psi)

T=0.4-0.6 sec

Fig.9-40

2) When the clutch is engaged completely

When the piston(6) moves to the end,there is no flow through chock(2) and the pressures in chamber

(3) and circuit(1) become equal,that is,the pressure which the plunger receives on both sides are the same.Consequently,plunger(7) is pushed back to the left by the force of spring(9),which closes the passage from port B to port T.With this,the pressure in circuit(1) starts rising at point P3 up to the supplied pressure.Thus the clutch engagement is maintained.

Fig.9-41 When the clutch is completely engaged

9-20

3.3 DISASSEMBLY AND INSPECTION

1) Required Tools

-24 mm box type wrench and torque wrench: for valve tightening

-22 mm box type wrench and torque wrench: for plug(5)

-Other required things:tweezers,sealing tape,rag,and oil stone

2) Disassembly a. Detach the change cover and remove this valve assembly b. Remove the plug(5) ,Take springs (9 and 8), and then extract piston(6) and plunger(7) by tilting body(4).

3) Inspection of the disassemble parts.

Inspect the plunger and the piston for dents on their friction surfaces.Such flaws must be corrected with oil stone.Wash all parts in fresh cleansing oil

4) Reassembly a. Tightening torque

Ref.No

(5)

Fastener Name

Plug

Valve assembly*

Tightening torque[Kgf.m(ft.lbs)]

4.0-5.0(28.9-36.2)

4.5(32.6)

* The threads should not be wrapped with sealing tape.

b. Install plunger(7) into body(4) and confirm that the plunger moves smoothly.Then install

Fig.9-42

9-21

4. FLOW-CONTROL VALVE(SLOW-RETURN CHECK VALVE)

4.1. GENERAL DESCRIPTION

This valve regulates the lowering speed of the lift by controlling the unloading flow from the lift cylinder to the tank.

①Dust seal

②Snap ring

③Collar

④Body

⑤0-ring

⑥Adjust screw

⑦Back-up ring

⑧0-ring

⑨Stop ring

⑩Poppet

⑪Spring

⑫0-ring

Slow-return check valve

9-22

Fig. 9-43 Slow-return check valve Diagram

4.2 OPERATIONS

1) DOWN position

The fluid from port B pushes up stop ring (9) of poppet(10) until the ring comes into contact with adjust screw(6),as it reaches chamber(R).

Consequently,the extent choke (C) is opened is determined by the positioning of adjust screw (6):that is,when adjust screw(6) is screwed in clockwise,the opening of chock(C) decreases and the lowering speed of the lift arm slows down;whereas the opening of choke(C) increases and the lowering speed of the lift is accelerated when the adjust screw is unscrewed counterclockwise.When the adjust screw screwed in completely,the poppet comes into contact with body seat(S) and the choke is closed completely,so the lift arm stops.

2) Up position

The flow port A,overcoming the force of spring(11),pushes up poppet (10) and choke(C)is fully opened regardless of the position of adjust screw(6).Thus the fluid results in raising the lift arm.

Fig. 9-44 Down position

Fig. 9-45 Up position

9-23

5.SAFETY VALVE( Reference)

5.1 GENERAL DESCRIPTION

With the chock closed completely by turning the adjust screw tightly clockwise,the implement mounted on the lift is held at a specified height.While the tractor is traveling on roads in the condition,there is a possibility that the cylinder pressure will rise excessively when the implement bounces.In such a situation the cylinder pressure can rise so high as to break the cylinder.To prevent such an accident,the relief valve works to leak off the fluid in the cylinder to the tank via port P and port T to decrease the cylinder pressure

5.2 OPERATION

This valve is installed in the slow return check valve circuit and able to be installed in the cylinder case instead of Bolt.When the adjust screw of the slow return check valve is closed completely,the slow return check valve is completely closed.In this condition,when the cylinder pressure exceeds the regulated pressure of the relief valve: cracking pressure,the fluid pushed up ball(3),overcoming the force of spring(5).Then the surplus fluid is bled off to the tank via port P and Port T.

6. RELIEF VALVE

1) GENERAL DESCRIPTION

This valve regulates the maximum pressure in the whole hydraulic circuit.The regulated pressure can be set with the adjust screw.

Fig.9-46

1.Body 2.seal 3.Ball 4.Spring seat

5. Spring 6.Adjust screw 7.O-ring

8.Lock nut 9.O-ring 10.O-ring

Circuit diagram

Fig.9-47

Fig.9-48 relief valve

9-24

1.Body 2.seal 3.Ball 4.Spring seat

5. Sleeve 6.Spring 7.Spring stopper

8.Adjust screw 9.Lock nut

2) PRECAUTIONS FOR DISASSEMBLY

AND REASSEMBLY

(1)Tightening torque of lock nut (9)5.0∼6.0

㎏f·㎠(36.2∼43.4 ft.lbs)

(2)Install seat(2)and then tap ball(3)(5/16) lightly so as to provide tight seating.

(3)Wrap the valve threads with sealing tape and tighten the valve up to a specified torque of 5-6Kgf.m(36-43 ft.lbs)

(4)Before disassembly, the current screwing-in depth of the adjust screw should be written down or memorized for later reference.

3) MEASUREMENT OF THE RELIEF PRESSURE

(1) 3 POINT TO TEST RELIEF PRESSURE

①Remove the plug on the rear side of the transmission case and install a compression gauge to measure the pressure.

Measurement the Pressure must be done 3 times and should be set within specified pressure.

Specified relief pressure

170 +5

㎏f·㎠ position control lever at the highest position.

②Control valve coupler.

③Remove the plug in the hyd. pump flange and engage the pressure gauge and measure it.

Fig.9-49

9-25

7.GEAR PUMP

7.1 GENERAL DESCRIPTION

This pump induces fluid from one side and delivers it from the other side,by rotating two gears meshed with each other. The actual delivery is as mentioned below,considering the consequences of fluid temperature and volume efficiency in accordance with revolution speed. That is dual pump system.

Fig. 9-50 Gear pump

7. 2 OPERATIONS.

This pump induces fluid from one side and delivers it from the other side,by rotating two gears meshed with each other. The actual delivery is as mentioned Fig.9-51,Considering the consequences of fluid Temperature and volume efficiency in accordance with revolution speed.

9-26

Fig. 9-51 Gear pump

7.3 DISASSEMBLY (Reference)

NOTE:

①Before disassembling the pump,wash the outside clean.In the course of disassembling operation,all disassembled parts should be kept aside in a clean place such as on clean paper or cloth and be handled carefully so as to prevent them from becoming dirty or damaged.

Check all disassembled parts for damage and wash undamaged or usable parts in clean diesel fuel or kerosene. Inspect all parts referring to these point,and repair or replace defective parts.

(1)DISASSEMBLY

①Remove the key.

③Remove front and rear pump.

Be sure not to be damaged the o-ring or steel ball

Fig. 9-54 Front and rear pump

④Remove the rear pump

▶Detach the cover

▶Remove the o-ring

▶Remove the bushing,drive gear,gear and bushing.Take care of removing the bushing which is marked and recorded.

▶Remove the bushing seal from the bushing.

Fig. 9-52 Drive shaft key.

②Hold the pump in a vice with the mounting flange turned downward,and remove the bolts

Fig. 9-55 Front and rear pump

⑤Remove the front pump same as rear pump disassembly.

⑥Remove the snap ring and extract oil seal from the flange.

Fig. 9-53 Cover bolt

9-27

Fig. 9-56 Front and rear pump

3) REASSEMBLY

① Install the rear pump.

▶Install the bushing seal to bushing.

▶Install the bushing,drive gear,gear,and bushing to the housing.

▶Install the o-ring to the cover.

▶Install the cover to the housing.

④Tightening sequence and torque of the pump cover tightening bolts.

▶Tightening torque: 2.5∼2.8㎏f·m

Fig. 9-59 Cover bolt

⑤ Install the oil seal,snap ring,and key.

Fig. 9-57 Front and rear pump.

②Install the front pump with rear pump.

③After installing the cap ring,and O-ring to the front pump,and install the rear pump.

Fig. 9-60 Oil seal,snap ring,key.

⑥The gears should turn smoothly with a turning torque of less than 30 kgf.cm

(2.2ft.lbs)

Fig. 9-58 Drive gear,gear,Gasket

9-28

Fig. 9-61 Inspection after reassembly.

4) INSPECTION AND REPAIR

(1)Check all disassembled parts for damage and wash undamaged or usable parts in clean diesel fuel or kerosene except rubber parts.Inspect all parts referring to these points,and repair or replace defective parts.

(2) Housing(casing)

①The gear pump is originally designed so that the gears come into light contact with the side of the pump body

②Therefore some evidence of contact can be found around the intake port of a pump once used.

③The normal contact tracing is less than half the length of the gear housing bore and less than 0.05 mm(0.0020 in)in width.If width

A is more than 0.1 mm(0.004 in), replace the gear pump set.

(3) Bushing

① With clean working fluid,surfaces are rarely scratched and should be smooth.

② If there are many scratches on the bore walls,or on parts which are in contact with the gears,which can be readily felt or when the latter parts are darkened,the gear pump set should be replaced.

Fig. 9-62 Housing (casing)

Fig. 9-64 Bushing

Problem and causes are as below a.contaminated fluid b.overload by relief valve damage c.cavitation or airation d.overheat of fluid. e.Low density of fluid

④Some evidence of contact can be found around the intake port of a bushing once used. The normal contact tracing is less than half the length of the bushing bore and less than 0.03mm(0,0012 in)in width .If width is more than o.o3 mm

(0.0012 in).Replace the bushing.

Fig. 9-63 Housing (casing)

9-29

Fig. 9-65 Bushing

(4) GEAR

①With clean working fluid,surfaces are rarely scratched and should be smooth.

②If roughness can be felt by a finger nail,they are darkened,or the shaft diameter is less than

0.03 mm replace the shaft.

③Usable shaft diameter is as below

Fig.9-66 gear shaft

(5) Oil seal

The oil seal prevents oil leaks by its inner seal lip and dust from invading by its outer dust lip.Therefore if an oil seal has damaged or deformed lips,it should be

(6)MEASUREMENT OF THE PUMP

The best way to measure for the pump is to use a special tester.

But if it's not available,Use installed tractor

Remove the plug in the delivery pipe on the righthand side of the transmission case and install a compression gauge to measure the pressure.

Keep the engine speed at 2600 rpm and shift the position control lever at the highest position.

9-30

8. FILTER

Fig. 9-67 Filter

8.1 GENERAL DESCRIPTION

The tractor is equipped with two oil filters: suction filter(48) and line filter(4),for better filtration.

48.Filter assy,suction

48-02.Element

SECTION 5. REMOTE HYDRAULIC CONTROL

1.GENERAL DESCRIPTION

- A hydraulic operated implement can be driven and controlled with this optional remote hydraulic control valve set.

- The valve is connected between the gear pump and the main control valve and is given a priority to draw hydraulic power.

-The valve is installed on the right-hand side of the hydraulic cylinder case and the connecting ports are provided under the right hand step .

2.FUNCTIONS

Lever position Circuit diagram

Raising

Raising

Neutral

A to B

Neutral

Closed at A and B

Lowering

Lowering B to A

Fig. 9-68 Remote hydraulic pump

9-32

3. SPECIFICATIONS

Maximum flow (ℓ/min) 45 LPM

Maximum pressure(Kgf/

㎠)

210

A and B port leak

Oil temperature:50℃(122℉)

Under a load of 100Kgf/

㎠

9 cc/min below

Recommended fluid THF 500

Operating temperature range -20℃~80℃

3.1 HYDRAULIC CIRCUIT

Hydraulic circuit (Spring type)

SECTION 6. TROUBLESHOOTING

Problems

1.Lift does not rise

Causes

1) Insufficient engine speed

2) Insufficient transmission oil

3) Air taken in through suction

Countermeasures

Raise engine speed slightly

Maintain oil level by replenishing with the same kind of oil

Tighten securely or replace broken parts.

4) Clogged suction filter Clean.

5) Broken or poor hydraulic pump Inspection pump and repair or replace if necessary.Pay particular attention to shaft seal because a broken seal sometimes intakes air.

6) Poor link mechanism

7) Excessive load on lift

Inspect,adjust,repair,or replace if necessary.(Refer to section 3)

Decrease load

8) Broken cylinder

9) Too low viscosity of transmission oil

10)Maladjusted relief valve

Replace

As it will cause oil leaks or internal wear,replace with gear oil of SAE80

11)Excessive internal leaks

Readjust.

(Cracking:refer to the specifications)

Inspect cylinder and valves.Replace damaged seals,and repair.

(Check each part systematically)

12)Broken flow divider

(Stuck sequential valve spool)

Disassemble and wash spool clean.

If it is damaged seriously,replace it as an assembly.If damage is minor,correct surface with oil stone and finish by lapping.

13)Broken control valve

(Even when spool is shifted to up position,lift does not rise)

①Stuck compensator plunger

(unloading valve 1)

Lap after repairing flaws with oil stone

②Clogged orifices or slanted orifices in pilot passage.

Clean them with compressed air or a sharp point.

③Stuck poppet(unloading valve 2)

Correct minor flaws with oil stone

④Bitten or stuck check valve

Lap after repairing flaws with oil stone plunger

14)Broken slow-return check valve

①Stuck poppet

9-34

Lap after disassembling,cleaning, and repairing flaws with oil stone

2.Too low rising speed of lift

Problems

3.Lift lowers even when adjust knob is closed fully with adjust Handle

(While engine is stopped)

4.Lift does not lower

Causes

1)Above causes can also be possible

2) Too small a spool stroke in control valve

3)Broken compensator spring

(unloading valve 1) in control valve

Replace spring.

4)Stuck poppet

(unloading valve 2)

Correct minor flaws with an oil stone

1)Stuck poppet

2)Poor valve seat

3)Poor 0-ring

1)Slow-return-check valve knob is turned to the lock position

2)Stuck poppet of slow-

Return-check valve

3)Seized lift shaft if necessary.

Countermeasures

Repair according to above instructions.

Inspect,readjust,or replace link mechanism

Lap after disassembling,cleaning,repairing flaws with oil stone

Replace valve

Replace

Turn knob to fast position

5.Too slow lift lowering speed

6.When hydraulic control lever is raised,relief,valve beeps.

7.Fluid

overheating

4)Stuck main spool

1)Above mentioned causes can also be possible.

2)Insufficiently lowered control lever

3)Excessively closed slowreturn check valve

1) Maladjusted lever stopper check valve

2) Poor link mechanism

Lap after disassembling, cleaning,repairing flaws with oil stone

Apply grease and repair or replace bushings or shaft if necessary.

Lap lightly after disassembling, cleaning, and repairing flaws with oil stone or replace as an assembly.

Repair or adjust according to instructions mentioned above.

Lower lever sufficiently

Open valve sufficiently

Readjust lever stopper guide position

Inspect,readjust,repair,or replace link mechanism if necessary.

Inspect and adjust 1)Excessively high working pressure

2)Too high or low viscosity of working fluid.

3)Insufficient fluid

9-35

Replace with fluid of adequate viscosity.

Maintain specified level by replenishing

Problems

8.Pump noise

9.Excessive wear,deflection or damage of pump

Causes

1) Partially clogged suction filter or suction piping.

2) Air inhaled through suction piping and intake pipe connections for pump

3) Loosened pump cover tightening bolts.

4) Too rich oil viscosity

5) Broken or worn pump parts

1) Dirty fluid

2) Circuit pressure exceeds pump capacity

3) Oil-less operation due to

Insufficient oil quantity

Clean.

Countermeasures

Inspect and retighten.

Inspect and retighten

Replace with fluid of adequate viscosity.

Inspect and replace defective parts.

Eliminate foreign matter and inspect filters.

Adjust relief valve or replace if necessary

Inspect transmission oil level and maintain specified oil level by replenishing.In either case,clean, and repair pump parts and replace damaged ones if necessary.

outside pump

11.Oil leaks from piping or joints

O-ring

Poorly connected piping

Poor O-ring

Broken piping

12.Oil leaks around lift arm

13.Independent

PTO clutch slips or is too slow in engaging

Poor oil seals

1) Clogged fixed orifice of Flow divider

2) Port B regulated pressure is too slow

3) Clogged PTO pressure control valve or stuck

4) Poor flow divider solenoid valve

Inspect,clean,and eliminate dust.

Repair flaws with oil stone if necessary. Retighten.

Replace

Replace with a new one after washing clean related parts.

Replace oil seal or bushing if necessary

Disassemble and wash clean.

Inspect and reset pressure

Disassemble and wash clean.

Repair flaws with oil stone if necessary or replace with a new one.

Disassemble and repair or replace with new one if necessary .

9-36

Problems

14.Independent

PTO clutch is too quick in engaging

Causes

1) Stuck pressure-reducing valve spool

2) Fatigued or broken pressurereducing valve spring

3) Worn or broken sealing of PTO clutch

4) Worn friction plates or driven plates

5) Overheated fluid

6) Port B regulated pressure is too high of Flow-divider

7) Stuck pressure-reducing valve spool

8) Clogged orifice in pressurereducing valve spool

Countermeasures

Lap after correcting flaws with oil stone

Replace.

Replace

Replace

Refer to paragraph for "fluid overheating"

Inspect and reset pressure

Lap after correcting flaws with oil stone

Clear clogged with compressed air or with a sharp point.

9-37

Chapter 10 .Electrical accessory and instruments

SECTION 1. GENERAL DESCRIPTION ----------------------------10-1

SECTION 2. SPECIFICATIONS --------------------------------------10-1

SECTION 3. BATTERY---------------------------------------------------10-2

1. Inspection --------------------------------------------------------------10-2

1.1. Inspection of electrolyte level -----------------------10-2

1.2. Inspection of electrolyte specific gravity-------------------------10-2

1.3. Battery charging ------------------------------------------------10-2

1.4 Battery testing charts ------------------------------------------------10-3

SECTION 4. Meters and switches---------------------------------------10-5

1. Meters---------------------------------------------------------------------10-5

1.1 Removal-----------------------------------------------------------------10-5

1.2 Tacho/Hour meter-----------------------------------------------------

1.3 Fuel gauge and fuel gauge sensor-----------------------------------

10-5

10-5

2. Starter switch------------------------------------------------------------

3.Combination switch-----------------------------------------------------

10-6

10-7

4.Stop light switch---------------------------------------------------------

5.Relay unit------------------------------------------------------------------

10-8

10-8

6.Fuse-------------------------------------------------------------------------

7.Controller-----------------------------------------------------------------

8.Trailer socket(7P) ------------------------------------------------------

10-8

10-8

10-11

10

SECTION 5. EARTHING POINT-------------------------------------10-12

SECTION 6. WIRING DIAGRAM------------------------------------10-13

SECTION 7. TROUBLESHOOTING---------------------------------10-21

Chapter 10 Electrical accessory and instruments

SECTION 1. GENERAL DESCRIPTION

The basic electrical system of tractors consists of the engine cranking system ,battery charging system,lighting system,meters,switches,etc.

For further information concerning the engine cranking equipment and battery charging equipment, please refer to the engine manual.

The battery is a power source to activate the engine cranking system,lighting system,and other electrical equipment. The lighting system is used to activate the illumination lights, indicators, and signal lights. The meter is a device that enables the operator to be aware of the present operating conditions;oil pressure gauge,water temperature gauge (thermometer), fuel gauge, etc. are installed.

All the controls,meters, and indicators are arranged around the operator’s seat for easy

Maneuverability readability,and convenience.

SECTION 2. SPECIFICATIONS

1.lighting system

2. Monitoring system

3.Fuses

4.Battery

MODEL

PART NAME

Head lights

T433/T503/T553

Specification(w) Quantity

55/55 2

Front combination Turn signal lights 21 lights

Small lights

8

Rear combination lights

Turn signal lights

Stop lights

Tail light

21

21

5

Meter assembly Hour meter

Fuel gauge

Thermometer

Pilot light

-

-

-

(3.4)

Fuses(A)

Fusible links

Horn

In main fuse box

(with spare fuse)

In Cabin fuse box

0.85

1.25

-

-

-

15A

10A

20A

12V80AH

-

-

2

2

2

2

1

15

1

6

9

4

1

1

1

10-1

SECTION 3. BATTERY

1.INSPECTION

1.1 INSPECTION OF ELECTROLYTE LEVEL

As the battery repeats charging and discharging during operation.The water content in the electrolyte gradually evaporates, and as a result,the level should be inspected at the specific level;replenish with distilled water.

Fig.10-1 electrolyte level

Note:

When the distilled water is added,charge the battery to mix it well into the electrolyte before measuring the specific gravity.

a.Temperature correction of the hydrometer reading

The specific gravity of the battery electrolyte(diluted sulfuric acid) varies with the temperature of the electrolyte at a rate 0.0007

specific gravity point for each 1℃ change in temperature.Therefore, when the specific gravity of the electrolyte in the battery is measured with a suction type hydrometer,a temperature correction should be made,using the following formula to permit the direct comparison of the measured valve with the standard specific gravity at 20 ℃.

S

20

:St+0.0007(t-20)

S

20

:Specific gravity at standard temperature of 20 ℃.

t : Temperature of the electrolyte at the time of measurement

St : Specific gravity of the

1.2 INSPECTION OF ELECTROLYTE

SPECIFIC GRAVITY

The specific gravity of the electrolyte lowers as the battery discharges,so the battery condition can be determined by measuring the specific gravity.The specific gravity can be measured generally with a suction type hydrometer which must be read properly as shown in Fig. 10-2

Fig.10-2 electrolyte gravity

If the specified gravity of the battery electrolyte in lower than 1.220 (at 20 ℃),the battery should be recharged,because leaving an undercharged battery without recharging it will lead to permanent battery damage.The battery is subject to self-discharge at a rate as shown in the table below.Therefore it should be recharged from time to time when storing the battery unused for a long period of time.

When recharging the battery,wash clean the outside of the battery case and the battery posts.Check the level of the electrolyte in each cell and replenish with distilled water as necessary.

Temperature Self-discharge rate per day

(%)

30 ℃

20 ℃

5 ℃

1

0.15

0.025

10-2

Decrease in specific gravity per day

0.002

0.001

0.005

1.4 BATTERY TESTING CHARTS

Step 1.

VISUAL INSPECTION

Check for obvious damage such as cracked or broken case that shows loss of electrolyte,thermal damage,etc.

Obvious damage

Replace battery

No obvious damage

Check electrolyte level

Electrolyte level is below top of plates in one or more cells

Add water up to just above separators.

Charge for 15min.with 15.25 amp

Electrolyte level is above top of plates in all cells

-proceed to step 2

Step 2

50 points or more variation between highest and lowest cell

Recharge battery and if 50 points variation persists,replace battery

Specific gravity:Below 1.225

Charge until all cells are at least

1.225

Turn on head lamps (or 15-A load)for 15seconds

Proceed to step 3

Hydrometer test

Less than 50 points variation between highest and lowest cell

Specific gravity 1.225 or above

Proceed to step 3

10-3

Step 3

Load test

1.Connect voltmeter and ampere load equal to ½ the cold cranking amperes(18℃) rating of the battery for 15 seconds.

2. Observe voltage at 15 seconds with load on.Disconnect load

3.Place thermometer in one cell to take temperature of electrolyte.

4.Refer to voltage table

Voltage below table value

Replace

Voltage equal to or above table value-return to service

Estimated electrolyte temperature

70 ℉ (21 ℃) and above

60 ℉ (16 ℃)

50 ℉ (10 ℃)

40 ℉ (4 ℃)

30 ℉ (-1 ℃)

20 ℉ (-7 ℃)

10 ℉ (-12 ℃)

0 ℉ (-18 ℃)

Voltage table

Minimum required voltage under 15 sec.load

9.1

8.9

8.7

8.3

9.6

9.5

9.4

9.3

10-4

SECTION 4. METERS AND SWITCHES

1.METERS

1.1 Removal

a. Disconnect the cable from the negative post.

b. Remove the philips screw which hold the meter panel and lift up the panel assembly a little

Fig.10-3 Meter panel

The generated pulses are converted into voltage output through a converter.Then the voltage is divided into three different phase coils through a

IC circuit.The tachometer pointer is swung by the compound magnetic field generated by the three point.

b. Inspection

-Tachometer

The allowable error of a tachometer reading is specified as shown on the table below.If the reading deviates from the specified value.replace

the meter assembly.

Engine speed(rpm)

Allowable error(rpm)

1000

±150

2500

±150 c. Then the meter panel can be detached by removing the wire harness couplings.

1.3 Fuel gauge and Fuel gauge sensor

a.Construction

When the fuel tank is full,the float is at the top and has moved the variable resister to a position of least resistance.This feeds maximum current into the meter circuit and the pointer swings fully to the F position.Consequently when the fuel level in the tank is low,everything acts in reverse.

Fig.10-4 Wire harness

1.2 Tacho/hour meter and sensor a. Construction

An electric tachometer is employed along with a

Tachosensor.The tach/hour meter converts engine revolutions to electric signals,which is sent to the tachometer.The tachometer displays the engine revolutions visually.The tachosensor generates 14 pulses per one engine revolution.

10-5

Fig.10-5 Fuel gauge sensor

b.Inspection

-Fuel meter

Connect the fuel gauge to form a circuit with the resisters as shown Fig.10-6 and check to see if the gauge pointer swings to each position: F.1/2 and E by changing the resistance value.

If it does not,change the gauge assembly.

Fig.10-6

-Fuel gauge sensor(variable resistor)

Check each resistance value with a tester at each float position as shown in Fig.10-7.if the measured values are deviated from respective specified values,replace the sensor assembly.

Note:

1) Figures in parentheses are reference value

2) Inspect each position in order F to E

3) Read values in three minutes.

1.4.Thermometer

a. Construction

This is the same moving magnet type meters as the fuel gauge.As the coolant temperature becomes higher,the resistance in the thermo unit(sensor) become lower,which results in more current to the meter circuit and swinging the meter pointer to the high temperature side on the scale.Of course,as the coolant temperature become lower,everything acts in reverse.

b. Inspection

Normally the thermometer resisters higher values as the coolant temperature rises after the engine is running.If it does not,check the wiring first. If the wiring is normal.Replace assembly.

2. STARTER SWITCH

(1) Removal a. Remove the dash cover(Upper) b. Remove the ring nut holding the starter switch using a conventional screw driver.

c. Pull out the key switch as shown in Fig.10-8

Fig.10-7

Standard pointer position F

Regulated resistance( Ω) 3

Sensor Unit resistance(Ω)

± 2

(1/2)

32.5

± 4

E

110

± 7

10-6

Fig.10-8

(2) Inspection

a.The main switch circuit,switching positions, and terminals are as shown in the figures.

Check the continuity across respective terminals referring to the switch circuit diagram. Replace a defective switch as an assembly

(3) Release the ring nut with a conventional screw drive(-) and remove the combination switch.

2) Inspection

Each switch circuit is as shown,so check each switch for a continuity across respective terminals with a tester.Replace a defective switch as an assembly.

Signal switch

Fig.10-9

Light switch

Fig.10-13 combination switch

Fig.10-10

3. COMBINATION SWITCH

1) Removal

(1) Remove the meter panel

(2) Remove the light switch knob and turn signal switch lever.

Fig.10-12

10-7

Fig.10-14 Harness socket

4. STOP LIGHT SWITCH

Fig.10-15 Stop light switch

Capacity

Stroke to ON

Total stroke

10~20A (DC12V)

3

±0.5mm

8mm

5.RELAY UNIT

Fig.10-16 Relay unit

6. FUSE

Fuses are installed in the main fuse box and one for the headlights.Three fusible links are installed to prevent the wiring from burning due to a short circuit.

7. CONTROLLER

Fig.10-17

Capacity

Operating range

Operating temperature

DC12V

DC10~16V

-15~80ºC

Controller

Fuse box

Fig.10-18 Fuse box And Controller

10-8

1).Function

a. PTO control

No

1

2

3

Mode

Auto

Sensor

Reverse S/W

Safety S/W

Hyd.Lever S/W

PTO interrupt manual Reverse S/W

Safety S/W

Hyd.Lever S/W

PTO interrupt

OFF

Operation

PTO Sol.Off

PTO monitor lamp Blink

PTO Sol.ON

PTO monitor lamp ON

PTO Sol.OFF

PTO monitor lamp OFF b. Engine Start control

Engine can be started on the condition of

Brake S/W ON , and PTO S/W OFF Position

No

1

Sensor

Reverse S/W

Safety S/W

Operation

Start relay OFF

2 Reverse S/W

Safety S/W

PTO lamp S/W

C. Preheat control

Start relay ON

2

3

No

1

Sensor

Key S/W

Glow S/W

Starter S/W

Operation

Glow relay ON till t seconds

Glow relay ON

Glow relay ON

Note: t is 16 seconds to the glow time jumper is at

ON Position, and 8 seconds at OFF Position

2). CIRCUIT DIAGRAM

Fig.10-22 connector

1.Battery(+12V)

2.Battery(+12V)

3.Start S/W

4.Steering position Sensor

5.Preheat S/W

6.Charge lamp

7.PTO manual S/W

8.PTO auto S/W

9.PTO lamp S/W

10.Hi speed S/W

11.Quick turn monitor lamp

12.PTO Solenoid

13.Key+12[V]

14.Engine Stop SOL.

15.Engine stop SOL.

16.Start Relay

17.Reverse S/W

18.Safety S/W

19.Hyd.lever raise

20 Preheat time jumper

21. PTO interrupt

22.Quick turn S/W

23.PTO monitor lamp

24.Quick turn relay

25.Glow relay

26.GND

10-9

3). Each fuse is connected as follows

1. PANEL

2. LIGHT, HORN

3. WORKING LIGHT

4. STOP LAMP

5. TURN SIGNAL

6. CONTROLER

7. ENGINE STOP

8. FUEL PUMP

9. COUPLER

10. AUTO ROLLING

11. QUICK TURN

Fig.10-18

The circuit has 11 blade type fuses in its wiring circuit.When a fuse has blown replace it with one of the same value.

Note : Using a large capacity fuse or wire burn out the wiring system.

Use fuse tongs to replace fuses

Normal Blown out

Fig.10-19

1

FUSE BOX

2

SLOW BLOW FUSE

3

UNITS FOR DIRECTION

SIGNAL RELAY FOR THE POWER

4

PTO MONITOR

5

COUPLER FOR THE POWER

MAX RATED AMPERE

6

COUPLER FOR THE TRAILER

A

HEAD LAMP 12V55W

B

DIRECTION SIGNAL

LAMP

12V21W

STOP LAMP BACK LIGHT 21/5W

C

META PANEL LIGHT 12V3.4W

12V35W

12V21W

D

WORKING LAMP

E

DIRECTION SIGNAL

LAMP

SIDE LAMP

F

BACK LAMP

G

NUMBER LAMP

21V5W

12V20W

12V10W

10-10

▶Drawing for fixing position of the fuse

▶Wiring diagram of the electric instrument

Fig.10-20

8.Trailer socket

A hella’s 7-pin trailer socket is equipped as a standard equipment.Lamp on a trailer can be operated through the socket.

A type

B type

Fig.10-23

Socket No.

6

7

4

5

1

2

3

Description

Earth

Small light(Tail light)

Turn signal (LH)

Stop Light

Turn signal (RH)

Rear Light (License plate)

Reserve light

Color

A type B type

B

Y

GB

WL

GY

YW

WG

W

B

Y

R

G

Br

L

Specification

AV 1.25

AV 1.25

AV 1.25

AV 1.25

AV 1.25

AV 1.25

AV 1.25

Note:

Lamp on the trailer should be of the same size or smaller than those on the trailer.

Wire Housing

6

7

4

5

1

2

3

10-11

SECTION 5. EARTHING (GROUNDING) POINT

3.Dash panel

1.Front axle bracket (RH)

Fig.10-24

1) Front axle bracket (RH)

Earthed at upper tapped hole in the axle bracket.

3) Earthed at upper tapped hole in the dash panel.

Fig.10-25

2) Contact surfaces of the axle bracket and engine where they tightened together

10-12

Fig.10-26

T433/T503/T553 CABIN TYPE

WIRING DIAGRAM (A3)

10-13

T433/T503/T553 ROLL-BAR TYPE

WIRING DIAGRAM (A3)

10-14

T433/T503/T553 ELECTRIC SYSTEM DIAGRAM

10-15

T433/T503/T553 ROLL-BAR WIRING DIAGRAM

10-16

T433/T503/T553 CABIN WIRING DIAGRAM

(1)

10-17

T433/T503/T553 CABIN WIRING DIAGRAM

(2)

10-18

T433/T503/T553 CABIN WIRING DIAGRAM

(3)

10-19

SECTION 7. WIRING INSTRUCTION DIAGRAM

Fig.10-29

10-20

SECTION 7. TROUBLESHOOTING

Important: Whenever effecting a repair the reason for the cause of the problem must be investigated and corrected to avoid repeating failure.

The following table lists problems and their possible causes with the recommended remedial action

1. LIGHTING SYSTEM

Problems Causes

Discharged battery

Countermeasures

Check battery and charge or renew

Loose or defective battery cable connection

Inspect,clean,and tighten connection

Loose wire harness connectors

Several or all lights do not illuminate

Burnt out fuse or fusible link

Faulty wiring

Defective light switch

Several light bulbs burnt out due

Check and ensure connectors securely engaged

Inspect and renew.Check circuit before reconnecting power

Check lighting Circuit wiring and repair or renew

Check and renew

Check and renew voltage regulator

Individual lights do not illuminate

Lights burnt out repeatedly

Turn signal lights do not illuminate

Burnt out bulb Check and renew

Defective or corroded bulb contact Inspect,clean or renew

Burnt out fuse Inspect and renew.Check circuit before reconnecting power

Loose or broken wires Inspect ,secure,repair,or renew wiring

Poor ground connection

Faulty voltage regulator

Blown fuse

Inoperative flasher unit

Inoperative turn signal switch

Defective wiring or connections

Inspect,clean, and tighten ground connection

Check and renew voltage regulator

(Alternator)

Inspect and renew.Check circuit before reconnecting power

Check and renew

Check and renew

Inspect circuit,clean,and tighten connection.

Repair or renew wiring if necessary

10-21

Problems

Individual turn signal light does not illuminate

Turn signal pilot light is inoperative

Causes

Burnt out bulb

Corroded or loose bulb contacts

Poor ground connection or damage wiring

Faulty bulb

Defective flasher unit

Faulty wiring or connections

Stop lights does not illuminate

Inoperative work light

Inoperative stop light switch

See “Individual lights do not illuminate”

Work light switch is not turned on

See “Individual lights do not illuminate

Countermeasures

Check and renew

Inspect,clean,and renew

Inspect,clean,and tighten connections or renew wiring

Check and renew

Check and renew

Inspect,clean,and tighten connections or renew wiring

Check and renew

See “Individual lights do not illuminate

Ensure work light illuminates

See “Individual lights do not illuminate

2. INSTRUMENTATION

Problems

Inoperative or erratic meters

Causes

Loose or broken wiring

Defective meters

Defective sensors

Defective Voltage regulator

Loose or broken wiring Monitor light does not illuminate

PTO does not operate

Faulty main switch

Burnt out bulb

Burnt out fuse

Defective switch

Loose or broken wiring

Burnt out fuse

Loose or broken wires or connections

Defective PTO switch

Defective PTO solenoid

Countermeasures

Inspect Circuit, tighten connections or renew wiring

Inspect and renew

Check and renew

Check and renew voltage regulator (Alternator)

Inspect circuit,tighten connections or renew wiring

Check and renew

Check and renew

Check and renew

Check and renew

Check and renew

Inspect and renew.Check circuit

Inspect circuit,tighten connections,or renew wiring

Check and renew

Check and renew

10-22

Problems

Inoperative horn

Burnt out fuse

Causes

Loose or broken wires of connections

Defective horn switch

Defective horn

3.GLOW SYSTEM

Problems

All glow plugs do not heat red

Causes

Discharged Battery

Loose or defective battery cable connections

Loose wire harness connections

Burnt out fusible link

Individual glow plug does not glow

Glow monitor light does not illuminate

Defective main switch

Defective glow plug

Defective or corroded glow plug contacts

Loose or broken wires

Defective controller

Defective glow monitor light or monitor and warning check unit

Countermeasures

Inspect and renew.Check circuit before reconnecting power

Inspect circuit,tighten connections,or renew wiring

Check and renew

Check and renew

Countermeasures

Check battery and charge or renew

Inspect,clean,and tighten connections

Check and ensure connectors securely engaged

Inspect and renew.Check circuit before reconnecting power or renew

Check and renew

Check and renew

Inspect,Clean,or renew

Inspect,secure,repair,or renew wiring

Check and renew

See”Light system troubleshooting”

10-23

4. STARTING SYSTEM

Problems

Starter motor does not spin

Causes

Discharged battery

Defective stop light switch

Defective key switch

Defective starter motor connections or loose battery connections

Engine cranks slowly

Faulty starter motor

Defective master brake pedal

Faulty reverse or forward pedal

Defective push switch

Defective controller

Discharged battery

Excessive resistance in starter circuit

Defective starter motor

Tight engine

Countermeasures

Check battery and charge or renew

Check and renew

Check and renew

Check,clean and tighten connections

Inspect,repair,or renew

Inspect and try to push brake pedal

Inspect ,adjust neutral

Check and renew

Check and renew

Check battery and charge or renew

Check circuit connections and repair or renew faulty wiring

Refer to the engine manual

Refer to the engine manual

Problems

Battery is low in charge or discharge

Causes

Loose or worn alternator drive belt

Defective battery:It will not accept or hold charge.Electrolyte level is low

Excessive resistance due to loose charging system connections

Defective alternator

Defective battery

Defective Alternator

Alternator is charging at high rate

(Battery is overheating)

No output from alternator

Alternator drive belt is broken

Loose connection or broken cable in charge system

Defective voltage regulator

Defective alternator

Countermeasures

Check and adjust belt tension or renew

Check condition of battery and renew

Check,clean,and tighten circuit connections

Check and repair or renew

Check condition of battery and renew

Check and repair or renew

Renew and tension correctly

Inspect system,tighten connections and repair or renew faulty wiring

Check and renew

Check and repair or renew

10-24

Problems

Intermittent or low alternator output

Warning light dims

Warning light is normal but battery is discharged

Warning light is lit during operation

Causes

Alternator drive belt is slipping

Loose connection or broken cable in charge system

Countermeasures

Check and adjust belt tension or renew

Inspect system,tighten connections and repair or renew faulty wiring

Defective alternator

Faulty external charging circuit connections

Check and repair or renew

Inspect system,clean and tighten connections

Faulty rotor slip rings or brushes Inspect and repair or renew

Defective monitor and warning unit Check and renew

Faulty rectifier or rectifying diodes

Defective voltage regulator

Faulty starter

Faulty rectifier or rectifying diodes

Loose or worn alternator drive belt

Defective diodes

Faulty rotor,slip rings,or brushes

Defective starter

Check and renew

Check and renew

Check and renew

Check and renew

Check and adjust tension or renew

Check and renew

Inspect,repair,or renew

Check and renew

Warning light flashes intermittently diodes

Faulty external charging circuit

Alternator’s internal connections

Inspect circuit,clean,and tighten connections.Repair or renew faulty wiring

Inspect and test circuitry,Repair or renew

10-25

CHAPTER 11. CABIN

SECTION 1. GENERAL DESCRIPTION ----------------------------11-1

SECTION 2. INSTRUMENT AND RELATED PARTS ------11-2

SECTION 3. CONTROLS------------------------------------------------11-3

SECTION 4. HEATING SYSTEM-------------------------------------11-6

SECTION 5. AIR CONDITIONING SYSTEM----------------------11-8

SECTION 6. CABIN WIRING INSTRUCTION DIAGRAM----11-18

SECTION 7. CABIN WIRING DIAGRAM-------------------------11-19

11

CHAPTER 11. Cabin

SECTION 1. GENERAL DESCRIPTION

The cab fully conforms to the international standard as far as safety and soundproofing are concerned.

It can be provided with ventilation, heating and air-conditioning system.

It is available in the following version.:

● Cab with ventilation and heating systems

● Cab with ventilation, heating and air-conditioning systems.

The cab is in full conformity with the international standards as to the cab’s soundproofing.

Be very careful when operating in small spaces and always protect your ears whenever other working equipment is generating dangerous noise levels.

Fig.11-1 Rear side of Cabin

Fig.11-2 ISO view of Cabin

Fig.11-3 Remove the Cabin assembly.

11-1

Note :

Cabin can be Lifted up from transmission and gradually making sure that all relevant wiring.

Piping, cock and links are disconnected.

Remember that steering, braking and operational performances are highly influenced by the implements mounted, the trailers transported and the ballasts applied to the tractor.

When transporting heavy loads (exceeding the weight of the tractor) reduce the speed under 15 Km/h..

All the implements mounted onto the tractor must be safely secured.

Be very careful during implement hitching and unhitching operations. When using implement supports, be sure they are suitable and sufficiently strong.

Section 2.

INSTRUMENT AND RELATED PARTS

■

Doors:

The doors are provided with key locks.

To open from inside, push the lever downwards.

■

Rear Window:

The rear window is fitted with central handle for opening.

When opened it is held in place by two dampers.

Fig.11-3 Windows and working lamp switch

11-2

■

Side Window:

The side window is fitted with central handle for opening.

When opened it is held in place by holder.

■ Working lamp switch is installed to right side frame and can be extracted as shown Left figure

■

Working lamps (front and rear) :

The working lamps are located on the cab roof (two in the front and two in the rear) .They are switched on by means of the special switches on the roof console

■

Rearview mirrors.:

The cab is provided with rearview mirrors on both sides. They can be adjusted and folded, whenever necessary, to avoid interference with external obstacles.

The mirror have a telescopic arm to allow positioning for maximum convenience by the user.

Remember that mirrors must always be positioned in compliance with road traffic regulations when driving on a public highway.

■

Cab ceiling:

The ceiling is padded with insulation material to block heat radiation into the cab and keep the temperature down when working in very sunny areas.

The cab platform is covered with a “firm grip” carpet in the most commonly used areas.

It is recommended to keep this carpet clear of earth, mud, etc. so that the operator may get on and off the tractor in full safety.

Section 3. Controls

Fig.11-4 Cabin interior

11-3

VENTILATION

The ventilation unit is housed in the cab ceiling.

To switch it on and adjust it, turn the electrical fan switch to the desired speed.

The cab becomes slightly pressurized when the ventilation system is in operation, so that the fresh air can enter only by way of the filter installed in the rear section of the cab roof.

The fan switch can be operated only after the ignition key is inserted.

The air flow can be regulated and directed by suitable positioning the air diffusers.

Air can be taken in fresh from outside or recirculated from within the cab by way of the relative side inlets

■

Re-circulation inlets fully closed:

Air is taken in entirely from outside the cab through the rear grille and filtered through a paper element positioned behind the grille.

N.B-it is very important that the air diffusers never be completed closed so as to allow for a steady air flow.

To obtain a greater pressurization inside the cab, it is necessary to take the air from the outside, therefore the inside air recirculatiing grille should be fully closed.

■

Working lamp switch

The front and rear working lights are ON when push the button.The work light indicator lamp on the instrument cluster will illuminate.

■

Wiper control switch

- Switch ON

The Wiper switch is ON when Push the Top button.

The Washer switch is ON when Push the Mid-button.

- Switch OFF

Once again push the buttons.

■

Windscreen Washer tank

Check the level of windscreen washer fluid in the plastic reservoir located at the front of the radiator

During winter,it is advisable to add a suitable antifreeze or methyl alcohol to the windscreen washer fluid.

■

Interior Lamp

Push the button to light on

And push it again to light off

11-4

■

Blower control switch

Three position rocker switch

■

Temperature control

Set temperature control as required,fully clockwise

For maximum cool and fully counterclockwise for heat.

Fig.11-5 Blower control Switch

Temperature control

■

Air conditioning switch

To operate the air conditioner,the blower must be on.The blower speed temperature control and all vents must be adjusted to obtain the best cooling for the ambient temperature and dust conditions.

Under normal operating conditions, and the windows and doors closed, temperatures in the cab of 6ºC to 15 ºC (10 ºF to 25 ºF) less than the ambient temperature will occur.

When operating the air conditioner system, the moisture level is decreased.

1) During cold weather,with ambient temperature above 0 ºC (32 ºF) operate the air conditioner at least once per month,for a period of 10 to 15 minutes.This will lubricate the seals to prevent them becoming brittle and help prevent the loss of refrigerant from the system.

2) The system is equipped with an environmentally safe refrigerant,R134a.Never recharge the air conditioning system with refrigerant other than R134a as this will result in loss of cooling and permanent damage to all air conditioning components

■

Circulation diffuser

With the circulation vent set in any position outside Air will still be pulled into the cab.

11-5

Fig.11-6 circulation diffuser

Section 4 HEATING SYSTEM

General description

The heater is switched on and adjusted by rotating the control knob at the roof console, then switching on the blower and setting the selector at the preferred speed .

To warn the cab up quickly, the knob should be rotated fully clockwise and the blower set to speed 3.

The screen is demisted or defrosted by air directed through a slot vent . For defrost or fast demist, all other vents should be closed off.

IMPORTANT:

Ventilation is provided by a single blower unit serving both the heating system and the air conditioning system.

After reaching the desired temperature adjust the system to suit your needs.

NOTE:

-For ideal system operation, the engine must run at 1000 rpm

Fig.11-7 heating system

1. Speed heating fan 2.Electric resistances 3.Recirculation inlets 4.Pivotal air diffuser 5.Air filter

Warning

Before starting the engine, make sure the system is off (by turning off the ventilation fan) so as not to overload the battery.

After the system at full power for a long period of time, never turn it off suddenly but let it first idle for about 20 seconds.

11-6

SYSTEM CONFIGULATION

1.The heating system consist of two units:

1-Electric heater and blower unit installed behind roof console.

2-Power supplying set, consisting of an auxiliary alternator located front of the engine and driven by a belt directly linked to the engine pulley.

If the air does not come out from the diffusers right away as soon as the system is started, turn off immediately and identify the fault.

N.B-Never turn on the heating system when working in dusty environments.

Fig.11-8 compressor and related parts

11-7

■

Compressor belt adjustment

Check the compressor belt tension regularly and adjust If required.

The correct tension is if the center of the belt is

Pushed With a finger it moves in approx. 10 mm

(0.39 in)as shown in the picture.

To adjust the belt, loosen or tighten the nut as shown in the picture.

Section 5. AIR CONDITIONING SYSTEM

The system is designed to ensure optimum temperature inside the cab and maximum comfort and safety for the operator.

However, it is advisable to consult our specialized workshops whenever repairs or adjustments need to be performed.

Do not approach the system with open flames, as any escape from the circuit may produce a lethal gas.

1.Alternator 2.Compressor 3.Speed fan 4.Electric resistance

5.Evaporator 6.Air filter 7.Recirculation inlets 8.Pivotal air diffusers

Fig.11-9 Air conditioning system

11-8

AIR CONDITIONING SYSTEM

Fig.11-10 Air conditioning system and related parts

11-9

■

Roof hatch

Ventilation-push the latch towards the front of the tractor and then push the hatch up.

Emergency Exit-Push firmly upwards to release the support struts from the lower retainer clips.

■

Cab Air intake filter

The

《Paper》 filter is not suitable for the treatment of pesticides

ACTIVE CARBON

》FILTER available optionally.Once the pesticide treatment is finished, it is necessary to once again replace the “ACTIVE CARBON” filter with the paper filter, since this is the only type suited for filtering foreign particles from the air.

Optional ACTIVE CARBONFILTER is informed to parts Catalogue

Fig.11-11 Air filter

11-9

■

At Regular intervals

(According to the operating conditions): clean filter(16 fig.11-12).To gain access to the filter it is necessary to loosen the two knobs fixing the side grill and the filter support, then remove the filter.

Filter cleaning is performed as follows:

1.Direct a jet of compressed air (Max.6 bar) in the direction opposite to that of the filtering action until the dust is completely removed.

2.Do not wash with a water and or detergent solution because this element filter is basically paper.

Warning

Cab air filters remove dust in the air,but are not capable of removing chemicals used in spraying crops or in weed control.Many chemicals used for these purposes are toxic when improperly used.and can be hazardous to operators and others in the area.

Follow the instructions of manufacturers of both the equipment and the chemicals regarding prohibition of dust or spray,personal hygiene practices,and other precautions noted by the manufacturers.

■

Radio, CD player ( If equipped)

Located into the top of the cabin,

And it can be extracted by removing fixing bolts in the cabin

■

Ash tray

Located at right side of near side window in cabin.

■

Cup Holder

Put the bottles and Personal belongings.

■

Cigarette Lighter

Push the button. Use that is retune to original position.

11-9

Fig.11-12 Radio ,CD player

1.SAFETY PROCEDURES.

This safety alert symbol indicates important safety messages in this manual. when you see this symbol, carefully read the message that follows and be alert to the possibility of personal injury or death

Warning

Refrigerant R134a is the most stable and easiest to work with refrigerants now in use in air conditioner systems. Refrigerant R134a does not contain any chlorofluorocarbons (CFC’s) which are harmful to the earth’s ozone layer.

3.Keep refrigerant containers in the correct upright position. Always keep refrigerant containers away from heat or sunlight.

The pressure in a container will increase with heat.

Safety procedures must be followed when working with Refrigerant R134a to prevent possible personal injury.

1.Always wear safety goggles when doing any service work near an air conditioner system.

Liquid refrigerant getting into the eyes can cause serious injury. Do the following if you get refrigerant near or in your eyes.

4.Always reclaim refrigerant from the system, if you are going to weld or steam clean near the air conditioner system.

5.Always check the temperature and pressure of the air conditioner system before reclaiming the refrigerant and when you test the system.

A.Flush your eyes with water for 15 minutes.

B. See a physician immediately.

6.Never leak test the system using a flame tester. Dangerous gas can form when refrigerant comes in contact with an open flame. Never permit fumes to be inhaled.

2. A drop of liquid refrigerant on your skin will cause frostbite. Open the fittings carefully and slowly when it is necessary to service the air conditioner system.

Your skin must be treated for frostbite or a physician must be seen if you get refrigerant on your skin.

7. Never leak or pressure test the system with compressed air or oxygen.

Refrigerant R134a in the presence of air or oxygen above atmospheric pressure can form a combustible gas.

Never operate the engine in a closed building. Proper ventilation is required under all circumstances.

Caution

Never touch liquid refrigerant, since even a small drop on your skin will cause severe and painful frostbite. Always wear protective gloves.

Caution

Always wear safety goggles when working with liquid refrigerant.

Liquid refrigerant in your eyes could cause blindness.

Caution

Caution

DO NOT use steam to clean any air conditioner system parts while the system is charged. The heat may cause the refrigerant to rise in pressure that can cause the system to explode

11-10

2. OPERATION

The air conditioner system contains five major components: Compressor, receiver drier, expansion valve and evaporator. These components are connected by tubes and hoses and operate as a closed system. The air conditioner system is charged with R-134a refrigerant..

The compressor receives the refrigerant as a low pressure gas. The compressor then compresses the refrigerant and sends it in the form of a high-pressure high temperature gas to the condenser. The airflow through the condenser then removes the heat from the refrigerant. As the heat is removed the refrigerant changes to the high-pressure liquid.

The high-pressure refrigerant liquid then flows from the condenser to the receiver drier. The receiver drier is a container filled with moisture removing material, which removes any moisture that may have entered the air conditioner system in order to prevent corrosion of the internal components of the system.

The refrigerant still in a high pressure liquid form, then flows from the receiver drier to the expansion valve then causes a restriction in flow of refrigerant to the evaporator core, lowering the pressure of the liquid.

As the refrigerant flows through the evaporator core the refrigerant is heated by the air around and flowing through the evaporator fins. The combination of increased heat and decreased pressure causes the refrigerant to evaporate an d form a low pressure gas.

The evaporation causes the airflow through the evaporator fins to become very cool. The cool air then passes from the evaporator to the operators cab.

The low pressure refrigerant gas return to the compressor to repeat the cycle.

Fig.11-18

11-11

3. Checking the air conditioning system.

①Economic friendly refrigerant : R134a 0.7∼0.85Kg.

The presence of air and water in the system could jeopardize its efficiency.

-The air is uselessly compressed by the compressor and no cooling effect is produced.

-The moisture has a tendency rise to obstructions which prevent the cooling efficiency.

② Check belt tension ; when finger pressure is applied to the mid-point between both pulleys.

③ Condenser fins must always be duly clean using water or an air set.

4. Checking the air conditioning system charge

(1) Check the refrigerant charge.

A.Run the engine at 1500rpm

B. Set the air conditioning system in the coldest for 5 minutes.

C. Check the sight glass dear or cloud

If the air-con. is operated with not charged.

The lubrication in the compressor can cause the damage.

Caution

(2) Check the refrigerant with receive drier sight glass

Bubbles or foam visible

●●●● Bubbles flow and refrigerant gas disappeared like a fog flows

●●●●Same bubble appeared occasionally

(1~2 sec. gap)

Trouble shoot

● Deficient of refrigerant

Replenish

● Nothing different temperature between H.L pipe

●●●● High pressure of the pressure gauge needle indicates low pressure

● Replenish the refrigerant

● High pressure pipe is hot and low pressure pipe is a little cool.

●●●● H.L pressure of the pressure gauge needle indicates low pressure.

Abnormal

Abnormal

11-12

Bubbles or foam visible

●No bubble shown

High-pressure pipe is hot abnormally.

H-L pressure of the pressure gauge needle indicates high pressure abnormally

● Refrigerant in the sight is shown clearly

● When engine RPM operates with high low some bubbles disappear slowly

Trouble shoot

●Too much of refrigerant deflate.

●High pressure pipe is not abnormal

● H.L pressure of the pressure gauge needle indicates high abnormally.

● Normal refrigerant gas situation

● High pressure pipe is hot

Low pressure pipe is cool

● High low pressure is normal with below.

Low: 1.5~2.0kg/

㎡

High: 14.5~15kg/

㎡

5.Diagnosing malfunctions.

(1) Tracing faults

SYMPTOM CONDITION

1.Compressor

Abnormal sound Inlet sound

Outlet sound

Abnormal revolution

Refrigerant or oil leakage

Excessive pressure

Inlet cause

Outlet cause

Refrigerant or oil leakage

Low,High pressure

Abnormal normal

CAUSE

Insufficient Lub.

Belt tension release Adjust

Release the bracket Tighten the bolts

Clutch fail Check

Damaged parts

Slip the clutch

Not Lub.

Belt tension released

Sealing washer damaged

REMEDY

Replenish

Check,replace

Check,replace

Replenish

Adjust replace

Head bolt released

D-ring damaged

Insufficient refrigerator

Compressor

Tighten the bolts

Replace

Adjust

Replace

11-13

2.Motor

3. Clutch

SYMPTOM

Weak from pressure or don”t work

Unable to control the fan

Noise

Disengage

Slip

CONDITION

Motor is normal

CAUSE

Air inlet clogged

Evaporator freezing

REMEDY

Remove

Controlling minimum pressure

Replace the switch

Motor is abnormal

Air leakage

Motor

Ventilator switch damage

Compressor

Motor failure

Wire cut

Duct leakage

Air volume control switch failure

Motor failure

Interference with pulley

Motor is abnormal

Regular noise

Irregular noise

Engaged sometimes Wire defect

Engaged to push with hand

No defect wire

Clutch gap large

Low voltage malfunction

Slip during rotation Low voltage

Oil stick at clutch

Malfunction

Replace

Replace

Replace

Check,tighten

Check,tighten

Replace

Control the compressor direction

Check wire

Adjust

Check battery

Replace

Check battery

Clean

Replace

(2) How to check the air conditioning system with the needle of high low gauge

To connect with manifold pressure gauge can find the cause of air conditioning system.

Because manifold pressure gauge is various sensibly (Ambient Temp. is based on 30~35℃)

Caution

:

Operating E/G RPM 1500~2000 is must, and so to that you can check the correct cause and air conditioning.

(In case below the figure of indicated pressure gauge has some clearance, confirm with approximate indicated needle data.)

Gauge pressure conversion

● lb/in²=PSI

●1 kg/㎠=14,223 lb/in²

(Ex) 200 PSI=14 kgf/

㎠

11-14

1.Normal

ⓐ

Pressure • Low pressure : 1.5~2.0 kg/

㎠

• High pressure: 14.5~15.0 kg/

㎠ ⓑ

Estimate • Refrigerant condition good

•Air conditioning good

• Normal air conditioning system

2. Deficient of Refrigerant Gas ⓐ

Pressure

● Low pressure : 0.8 kg/㎠(Low)

● High pressure: 8~9 kg/㎠(Low) ⓑ

Situation

● Deficient of air conditioning

(Air duct is not cool)

● Many bubbles at sight glass ⓒ

Cause

● Refrigerant leakage in the air condition

● Clogged the expansion valve

● clogged the receiver drier ⓓ

Estimate

● Deficient of refrigerant and leakage in the air conditioning system ⓔ

Remedy

●Replenish the refrigerant and repair partially

●Repair the expansion valve and the receive drier or replace

3.Too much the refrigerant ⓐ

Pressure

●Low pressure : 2.5 kg/㎠(High)

●High pressure: 20 kg/㎠(High) ⓑ

Situation

● Refrigerant condition is not good

●Never seen the bubble at sight glass ⓒ

Cause

●Much refrigerant

●Defect of the condenser ⓓ

Estimate

●Overcharged the refrigerant

●Defect of the condenser: Pin and the cooling fan ⓔ

Remedy

●Deflate the refrigerant

●Clean the condenser,and check the cooling fan belt

11-15

4.mixed Air in the air conditioning system ⓐ

Pressure

●Low pressure : 2.5 kg/㎠(High)

●High pressure: 23 kg/㎠(High) ⓑ

Situation

● Deficient of cooling condition ⓒ

Cause

(Not cool)

● Not cool when touch the low pipe

●Air was mixed in the air conditioning system ⓓ

Estimate

●Defect of the vacuum work in the air conditioning system ⓔ

Remedy

●Remove the vacuum and replenish the refrigerant

●Contaminated oil in the condenser:

Clean and replace

●Replace the receive dryer

5.mixed H

2

O in the air conditioning System ⓐ

Pressure

●Low pressure : Low~1.5 kg/㎠

(Low or vibrate seriously)

(Low or vibrate seriously) ⓑ

Situation

● Air conditioning is cool and is not periodically

● Manifold gauge pressure is occasionally down or normal ⓒ

Cause

●The expansion valve is freezing occasionally Mixed with H

2

O in the air conditioning system ⓓ

Estimate

●Receive dryer is over-saturation

●H

2

O was freezing in the expansion valve ⓔ

Remedy

●Replenish the refrigerant

●Replace the receive dryer

11-16

6.Refrigerant doesn’t circulate in the Air conditioning system ⓐ

Pressure

●Low pressure : Negative pressure(Low)

●High pressure: 6 kg/㎠(Low) ⓑ

Situation

● Deficient air conditioning ⓒ

Cause

(Not cool)

● Cool occasionally

●Clogged in the Expansion valve hole

(Clogged by foreign matter or freezing, dust) ⓓ

Estimate

●Clogged in the expansion valve ⓔ

Remedy

●Remove the wet:Replenish the refrigerant

●Remove dust:Disassemble the expansion valve and clean with air lower and replace

●Replace the receive dryer:Leakage in the expansion valve replace

7.Defect of the compressor pressure ⓐ

Pressure

●Low pressure : 4~6 kg/㎠(High)

●High pressure: 7~10 kg/㎠(Low) ⓑ

Situation

● Deficient air conditioning

(Not cool) ⓒ

Cause

●Compressor inside leakage ⓓ

Estimate

●Defect pressure of the compressor

(Valve leakage or damaged) ⓔ

Remedy

●Repair or replace

11-17

Section 6. WIRING

CABIN WIRING INSTRUCTION DIAGRAM

Fig.11-19

11-18

Section 7. CABIN WIRING DIAGRAM

Fig.11-20

11-19

CHAPTER 12. Service standards and other information

SECTION 1. SERVICE STANDARDS --------------------------12-1

1.Engine accessories --------------------------------------------12-1

2.Clutch damper-------------------------------------------------------12-2

3.Transmission --------------------------------------------------12-3

4.Front axle -------------------------------------------------------12-5

5.Rear Axle-------------------------------------------------------------12-6

6.Power steering system ---------------------------------------------12-6

7.Hydraulic system ---------------------------------------------------12-6

8.Electrical equipment-----------------------------------------------12-9

SECTION 2. TIGHTENING AND STARTING TORQUE

SPECIFIED FOR PARTS. --------------------------12-11

12

CHAPTER 11. Service standards and other information

SECTION 1. SERVICE STANDARDS.

Part names and inspection items

Nominal dimensions

Standard value for reassembly

Usable limits Service instructions and remarks

1. ENGINE ACCESSORIES(CHAPTER 3)

1) RADIATOR

Coolant capacity

Radiator cap valve operating pressure

3.8 ℓ

8.5ℓ

0.9

±0.15㎏f·㎠

Radiator alone

Whole cooling system

2) AIR CLEANER

Element capacity Rated intake air : 4.25

㎡

Air passing resistance : 120

㎜Aq or less Filtering efficiency

Dust holding capacity : 700g or more.

Filtering area(

㎡) 1.89±4%

OUTER ELEMENT

1. Clean or wash the element after 100 hours of operation.Replace a damaged on or one which has been used more than 500 hours. a.Cleaning (when dust is dry)

Apply compressed air of 7Kgf/

㎠ or lower to the inside of the element to blow dust outwards.

Never strike element to dust.

b.Washing(when dust is wet or oily)

Dissolve element cleanser or neutral detergent of good quality in water.Keep the element immersed in the solution about 30 minutes and then wash it by shaking gently.

-Then,rinse it in fresh water;Water pressure should be less than 2.8 Kgf/

㎠.

-Leave the washed element in a shaded,well-ventilated place to dry itself.

Never force-dry heat or compressed air.

2. An element which has been washed five times should be replaced with a new one.

3. When the tractor is used in dusty situation,Inspect the element everyday and clean if necessary

12-1

Part names and inspection items

Nominal dimensions

2. MAIN CLUTCH (CHAPTER 4)

CLUTCH DISC

ASSEMBLY

(Dry single plate)

Facing wear

Play between hub spline and input gear in rotational direction

Clutch cover

(Dual type)

Pressure plate flatness

Spline hub

No.of teeth

Outer diameter

Inner diameter

Distance from release lever

Free play of

CLUTCH PEDAL

19

Total stroke

Clearance between safety switch and push arm

Standard value for reassembly

Usable limits Service instructions and remarks

8.3

±0.3㎜

(0.327 in)

0.05

㎜ or less

0.5mm

(0.020)

Ø35.0

㎜

(1.378 in)

Ø31.7

㎜

(1.248 in)

30 ∼ 40

㎜

(1.18-1.57 in)

97

㎜

12

±1 ㎜

(0.47

±0.04 in)

6.5

㎜

(0.256 in)

Rivet head depression should maintained at more than 0.2

㎜

0.3

㎜

(0.012 in)

Should be measured on the hub.

1.0

㎜

(0.039 in)

Adjust with the clutch rod

(turn buckle)

12-2

Part names and inspection items

Nominal dimensions

Standard value for reassembly

Usable limits Service instructions and remarks

3. TRANSMISSION (CHAPTER 5)

1) FRONT AND SPACER TRANSMISSIONS

TRANSMISSION OIL CAPACITY

SHIFTER DISENGAGING LOAD

Main shift

Front wheel drive,

Creep shift

PTO shift

SYNCHRONIZER ASSEMBLY

Assembled width

18 - 22

㎏f

(40-49 lb)

18 - 22

㎏f

18 - 22

㎏f

29.0-29.4

㎜

(1.142-1.157 in)

17

㎏f

(38 lb)

17

㎏f

Synchro-hub thrust load

Brake disk flatness

13.0-18.8

㎏f

(28.7-41.5 lbs)

Individual gears back lash

Independent Rear

PTO clutch

Disk thickness

Disk flatness

0.1 ∼0.2

㎜

2.6

±0.1 ㎜

Driven plate thickness

1.6

±0.05 ㎜

Driven plate flatness

Brake disk thickness 3.0

±0.1㎜

35 ℓ

Measured at the shifters

(both for synchromesh and sliding-select gear)

Measure at the shifter

Measure at the shifter

9.5

㎏f

(20.9lbs)

0.5

㎜

2.4

㎜

0.2

㎜

1.5 mm from neutral to engaging when applied on the

0.15

㎜

2.6

㎜

0.2

㎜

12-3

Part names and inspection items

Nominal dimensions

2) REAR TRANSMISSION

(1) DRIVE PINION & RING GEAR

Starting torque

Backlash

Standard value for reassembly

0.11-0.13

㎏f·m

0.1 ∼ 0.2

㎜

Usable limits

Drive pinion and ring gear support shimming

Adjustment of relative positioning between drive pinion and ring gear

Service instructions and remarks

0.5

㎜

Backlash and tooth bearing should be adjusted properly when reassembled

Available shims on drive pinion metal(support)

Shim A : 0.1

㎜ (0.004 in)

Shim B : 0.2

㎜ (0.008 in)

Available shims on dif-case

Shim A : 0.1

㎜ (0.004 in)

Shim B : 0.2

㎜ (0.008

in)

(2) DIFFERENTIAL

Backlash between dif-pinion and dif-

0.1 ∼ 0.25

㎜

0.5

㎜

Worn pinion thrust collar or gear

Right and Left dif-side gears are refined differently from each other,so take care not to interchange them when assembled

12-4

Part names and inspection items

Nominal dimensions

Standard value for reassembly

4. FRONT AXLE (CHAPTER 6)

1) Front drive axle (4WD)

Tire inflation

Wheel alignment

Front

Center

Pivot

Shaft dia.

Bush

Front : 2.2

㎏f/㎠

Rear : 1.8

㎏f/㎠

①Toe-in : 2 ~6 ㎜

②Camber : 3°

③Caster : 1°

④King-pin : 12.5 °

⑤Steering angle: (RH : 52 °) (LH: 52°)

50

× 55×35

Φ 50

50

× 55×20

Φ 50

75

× 80×35

Φ 80 mm Rear center

Pivot

Shaft dia.

Bush

Play in bush

75

× 80×30

0.3

㎜

Φ 80 mm

0.1 ∼ 0.4

㎜

DIFFE

RENT

IAL

Pinion gear

Starting torque

Thrust play

Drive pinion/ring gear backlash

9 ∼11

㎏f·cm

11~13

㎏f-cm

0.13 ∼ 0.2

㎜

0.1 ∼ 0.2

㎜

Usable limits

Ø 49.9

㎜

Ø 50.2

㎜

Ø 79.9

Ø 80.2

0.5

㎜

㎜

㎜

Service instructions and remarks wear limit : 0.1

㎜ wear limit : 0.2

㎜ wear limit : 0.1

㎜ wear limit : 0.2

㎜ shims shim: 0.1, 0.2

㎜ shim: 0.1, 0.2

㎜

12-5

Part names and inspection items

Nominal dimensions

5.REAR AXLE (CHAPTER 7)

1) DISK BRAKE

FRICTION

PLATE

THICKNESS

(WEAR AND

CARBONIZER )

2) SEPARATE PLATE

Thickness

(wear and damage)

3) BRAKE ROD TURN BUCKLE

Pedal play at the top

Standard value for reassembly

3.4

2.5

± 0.1 ㎜

± 0.09 ㎜

30 ∼40

㎜

Usable limits

3.2

2.4

㎜

㎜

Service instructions and remarks

1) GEAR PUMP

Capacity 10 sec/rev.

Direction of revolution

CCW as viewed from the shaft of gear pump

7.HYDRAULIC SYSTEM (CHAPTER 9)

1) PISTON AND CYLINDER

cylinder and bore Ø90

㎜

0-ring : Ø80

㎜

12-6

Part names and inspection items

Nominal dimensions

Standard value for reassembly

2) Dynamic lift

T433/T503/T553 1600

㎏f·㎠

3) Cylinder case bush

Left side

Right side

55

×55 ×40

50

×55 ×40

4) Flow divider

Flow through PTO clutch port

Setting pressure of

PTO clutch port

5.0~6.0 cc(0.305 cu in)

17

㎏f/㎠ over

Ø 50

㎜

Ø 50

㎜

5) Flow divider assembly (Reference)

Solenoid Rated voltage

Rated current

DC 12 V

2.1 A

Switch-over frequency limit 2 times / sec

Clearance between change over valve and casing

Free length of change over valve spring 15.5

㎜

Clearance between sequential valve spool and casing

Free length of pressure reducing valve spring

30.0

㎜

Sequence valve spring free length.

22.0

㎜

Usable limits

Ø 50.2

㎜

Ø 50.2

㎜

0.025

㎜

15.0

㎜

0.021

㎜

29.0

㎜

21.5

㎜

Service instructions and remarks

Wear limit: 0.2

㎜

Wear limit: 0.2

㎜

Pressure:1

㎏f/㎠ (psi) under a flow rate of

0.9 ℓ/min

12-7

Part names and inspection items

Nominal dimensions

Standard value for reassembly

6) SLOW RETURN CHECK VALVE(Flow control valve)

Maximum pressure 280

㎏f/㎠(3982 psi)

Cylinder port leaks 1

㏄/min.at a pressure of 90 ㎏f/㎠

Usable limits

Service instructions and remarks

Gear oil

SAE #80 ∼ #90 at a temperature of 50

±

5℃ (122

±41 F)

7) MAIN CONTROL VALVE

Cylinder port leaks 5

㏄/min or less under a pressure of 100 ㎏f/㎠

0.01

㎜

Clearance between main spool and casing

8) MAIN RELIEF VALVE

Cracking pressure

9) MAIN GEAR PUMP

Delivery (ℓ/min)

170

±5 ㎏f/㎠

Front :30.5(ℓ/min)

Rear : 16(ℓ/min)

10) SUCTION FILTER

Rated flow

Filtration density

Filtration area

11) LINE FILTER

Rated flow

Filtration density

43 ℓ

/min

150 mesh

6231

㎠

35

100 mesh

Gear oil

SAE #80 ∼ #90 at a temperature of 50

± 5℃

Efficiency of 91 % at

2600 rpm

1 ¼ - 12 UNF

12-8

8.ELECTRICAL EQUIPMENT

1)BATTERY

(1)BATTERY TERMINAL POST

Terminal voltage

Corrosion -

-

(2) BATTERY CELLS

12 V

-

Damage -

(3) ELECTROLITE

Cloudy fluid

Specific gravity

Level

-

-

-

-

1.24 - 1.26

As specified on case

2) METER PANEL AND OTHER SWITCHES.

(1) STARTER SWITCH.

10.8 V

-

-

-

-

-

Charge or replace

Repair or replace

Replace battery

Replace battery

Correct

Replace with distilled water.

Each Terminal

Replace a defective switch assembly.

2) COMBINATION SWITCH

Continuity Across

Each Terminal

(3) STOP LIGHT SWITCH

Continuity across each terminal

Switched on when actuator is pushed in by about 3 mm(0.12 in)assembly

(4) Horn switch

●Horn switch

12-9

Replace a defective switch assembly.

Replace a defective switch assembly.

Replace a defective switch assembly.

(5) PTO SWITCH

Continuity across each terminal

(6) Controller

Continuity across each terminal

Switched on when lever is moved by about 3 mm

(0.12 in) across R and LR

Replace a defective switch assembly.

Replace a defective

Controller assembly.

(7) HAZARD WARNING SWITCH

Continuity across each terminal

Replace a defective switch assembly.

12-10

SECTION 2.TIGHTENING AND STARTING TORQUE SPECIFIED FOR MAJOR PARTS

1. T433/T503/T553

TIGHTENING PARTS

1)Front axle housing (4WD type)

①Axle bracket ∼ Engine tightening bolts

②Front pivot metal(support)tightening bolts

③Rear pivot metal(support) tightening bolts

④Front axle∼final case tightening bolts.

⑤Bearing cover tightening bolts.

⑥Wheel shaft cover tightening bolts.

⑦Front wheel tightening bolts.

⑧Bevel gear case tightening bolts

⑨Dif-metal(support) tightening bolts

2)Transmission

①Front transmission∼Engine tightening bolts and nuts tightening bolts and nuts tightening bolts and nuts

④Input metal(support)tightening bolts and nuts.

⑤Drive pinion metal(support) tightening bolts.

Drive pinion tightening nut

⑥Dif-case metal(support)tightening bolts.

⑦Dif case∼ring gear tightening nuts.

Bolt and Nut

(Hardness)

5/8-11UNC (9T)

M 14 (9T)

M 18 (7T)

M 12 (7T)

M 14 (7T)

M 8 (7T)

M 18 (7T)

M 12 (7T)

M 10 (7T)

M 12 (7T)

M 12 (7T)

M 12 (7T)

M 10 (7T)

M 12

M 12 (7T)

Tightening torque

(

㎏f·m)

16.0 ∼ 18.0

16.0 ∼ 18.0

20.0 ∼ 24.0

9.0 ∼ 11.0

13.5 ∼ 14

5.5 ∼ 7.0

23 ∼ 24

9.0 ∼ 11.0

7.5 ∼ 8.9

9.0 ∼ 11.0

9.0 ∼ 11.0

5.5 ∼ 7.0

5.5 ∼ 7.0

9.0 ∼ 11.0

12-11

CHAPTER 13. CONVERSION TABLES

13

SECTION 1. CONVERSION TABLES

in

0.0394

0.0787

0.1181

0.1575

0.1969

0.2362

0.2756

0.3150

0.3543

0.3937

0.4331

0.4724

0.5118

0.5512

0.5906

0.6299

0.6693

0.7087

0.7480

0.7874

0.8268

0.8661

0.9449

0.9843

9

10

11

12

7

8

5

6 mm

3

4

1

2

17

18

19

20

13

14

15

16

21

22

24

25

42

43

44

45

38

39

40

41

46

47

34

35

36

37

30

31

32

33

Millimeters to inc hes mm in mm

26

27

28

29

1.0236

1.0630

1.1024

1.1417

51

52

53

54 in

2.0079

2.0472

2.0866

2.1260

mm

76

77

78

79 in

2.9921

3.0315

3.0709

3.1102

1.1811

1.2205

1.2598

1.2992

1.3386

1.3780

1.4173

1.4567

55

56

57

58

59

60

61

62

2.1654

2.2047

2.2441

2.2835

2.3228

2.3622

2.4016

2.4409

80

81

82

83

84

85

86

87

3.1496

3.1890

3.2283

3.2677

3.3071

3.3465

3.3858

3.4252

49

50

1.4961

1.5354

1.5748

1.6142

1.6535

1.6929

1.7323

1.7717

1.8110

1.8504

1.9291

1.9685

63

64

65

66

67

68

69

70

71

72

2.4803

2.5197

2.5591

2.5984

2.6378

2.6772

2.7165

2.7559

2.7953

2.8346

88

89

90

91

92

93

94

95

96

97

3.4646

3.5039

3.5433

3.5827

3.6220

3.6614

3.7008

3.7402

3.7795

3.8189

73 2.8740

98 3.8583

74 2.9134

99 3.8976

75 2.9528

100 3.9370

in mm

1/ 64 0.3969

1/ 32 0.7938

3/ 64 1.1906

1/ 16 1.5875

5/ 64 1.9844

3/ 32 2.3813

7/ 64 2.7781

1/ 8 3.1750

9/ 64 3.5719

5/ 32 3.9688

11/ 64 4.3656

3/ 16 4.7625

13/ 64 5.1594

7/ 32 5.5563

15/ 64 5.9531

1/ 4 6.3500

17/ 64 6.7469

9/ 32 7.1438

19/ 64 7.5406

5/ 16 7.9375

21/ 64 8.3344

11/ 32 8.7313

23/ 64 9.1281

3/ 8 9.5250

Inches to millimeters in mm

25/ 64 9.9219

13/ 32 10.3188

27/ 64 10.7156

7/ 16 11.1125

29/ 64 11.5094

15/ 32 11.9063

31/ 64 12.3031

1/ 2 12.7000

33/ 64 13.0969

17/ 32 13.4938

35/ 64 13.8906

9/ 16 14.2875

37/ 64 14.6844

19/ 32 15.0813

39/ 64 15.4781

5/ 8 15.8750

41/ 64 16.2719

21/ 32 16.6688

43/ 64 17.0656

11/ 16 17.4625

45/ 64 17.8594

23/ 32 18.2563

3/ 4 19.0500

49/ 64 19.4469

25/ 32 19.8438

51/ 64 20.2406

in mm

13/ 16 20.6375

53/ 64 21.0344

27/ 32 21.4313

55/ 64 21.8281

7/ 8 22.2250

57/ 64 22.6219

29/ 32 23.0188

59/ 64 23.4156

15/ 16 23.8125

61/ 64 24.2094

31/ 32 24.6063

63/ 64 25.0031

13-1

ft

0

10

0 m

0.0000

8.0532

20 21.1097

30 34.1661

40 47.2225

50 60.2790

60 73.3354

70 86.3919

80 99.4483

90 112.5047

100 125.5612

1 m

0.3050

3.3550

6.4050

9.4550

12.5050

15.5550

18.6050

21.6550

24.7050

27.7550

30.8050

2 m

0.6100

3.6600

6.7100

9.7600

12.8100

15.8600

18.9100

21.9600

25.0100

28.0600

31.1100

3 m

0.9150

3.9650

4 m

1.2200

4.2700

7.0150

7.3200

10.0650

10.3700

13.1150

13.4200

16.1650

16.4700

19.2150

19.5200

22.2650

22.5700

25.3150

25.6200

28.3650

28.6700

31.4150

31.7200

5 m

1.5250

4.5750

6 m

1.8300

4.8800

7.6250

7.9300

10.6750

10.9800

13.7250

14.0300

16.7750

17.0800

19.8250

20.1300

22.8750

23.1800

25.9250

26.2300

28.9750

29.2800

32.0250

32.3300

7 m

2.1350

5.1850

8.2350

11.2850

14.3350

17.3850

20.4350

23.4850

26.5350

29.5850

32.6350

8 m

2.4400

5.4900

8.5400

11.5900

14.6400

17.6900

20.7400

23.7900

26.8400

29.8900

32.9400

9 m

2.7450

5.7950

8.8450

11.8950

14.9450

17.9950

21.0450

24.0950

27.1450

30.1950

33.2450

ft

80

90

100

40

50

60

70

0

10

20

30 m

0

10

0 ft

0.0000

32.8080

1 ft

3.2808

36.0888

2 ft

6.5616

39.3696

3 ft

4 ft

9.8424

13.1232

42.6504

45.9312

5 ft

6 ft

16.4040

19.6848

49.2120

52.4928

20 65.6160

68.8968

72.1776

75.4584

78.7392

82.0200

85.3008

30 98.4240

101.7048

104.9856

108.2664 111.5472

114.8280 118.1088

40 131.2320

134.5128

137.7936

141.0744 144.3552

147.6360 150.9168

50 164.0400

167.3208

170.6016

173.8824 177.1632

180.4440 183.7248

60 196.8480

200.1288

203.4096

206.6904 209.9712

213.2520 216.5328

70 229.6560

232.9368

236.2176

239.4984 242.7792

246.0600 249.3408

80 262.4640

265.7448

269.0256

272.3064 275.5872

278.8680 282.1488

90 295.2720

298.5528

301.8336

305.1144 308.3952

311.6760 314.9568

100 328.0800

331.3608

334.6416

337.9224 341.2032

344.4840 347.7648

7 ft

22.9656

55.7736

88.5816

121.3896

154.1976

187.0056

219.8136

252.6216

285.4296

318.2376

351.0456

8 ft

26.2464

59.0544

91.8624

124.6704

157.4784

190.2864

223.0944

255.9024

288.7104

321.5184

354.3264

9 ft

29.5272

62.3352

95.1432

127.9512

160.7592

193.5672

226.3752

259.1832

291.9912

324.7992

357.6072

0

10

20

30

40

50

60

70 112.630

Km

0.000

16.090

32.180

48.270

64.360

80.450

96.540

80 128.720

90 144.810

100 160.900

Km

1.609

17.699

33.789

49.879

65.969

82.059

98.149

114.239

130.329

146.419

162.509

Km

3.218

19.308

35.398

51.488

67.578

83.668

99.758

115.848

131.938

148.028

164.118

M ile to kilometers

4

Km

4.827

20.917

37.007

Km

6.436

22.526

38.616

53.097

69.187

54.706

70.796

85.277

86.886

101.367

102.976

117.457

119.066

133.547

135.156

149.637

151.246

165.727

167.336

5

Km

8.045

24.135

40.225

56.315

72.405

88.495

Km

9.654

25.744

41.834

57.924

74.014

90.104

104.585

106.194

120.675

122.284

136.765

138.374

152.855

154.464

168.945

170.554

Km

11.263

27.353

43.443

59.533

75.623

91.713

107.803

123.893

139.983

156.073

172.163

Km

12.872

28.962

45.052

61.142

77.232

93.322

109.412

125.502

141.592

157.682

173.772

Km

14.481

30.571

46.661

62.751

78.841

94.931

111.021

127.111

143.201

159.291

175.381

m

80

90

100

40

50

60

70

0

10

20

30

80

90

100

40

50

60

70

0

10

20

30

Km

80

90

100

40

50

60

70

0

10

20

30

0

Miles

0.000

6.210

12.420

18.630

24.840

31.050

37.260

43.470

49.680

55.890

62.100

1

Miles

0.621

6.831

13.041

19.251

25.461

31.671

37.881

44.091

50.301

56.511

62.721

2

Miles

1.242

7.452

13.662

19.872

26.082

32.292

38.502

44.712

50.922

57.132

63.342

3

Miles

1.863

8.073

14.283

20.493

26.703

32.913

39.123

45.333

51.543

57.753

63.963

4

Miles

2.484

8.694

14.904

21.114

27.324

33.534

39.744

45.954

52.164

58.374

64.584

5

Miles

3.105

9.315

15.525

21.735

27.945

34.155

40.365

46.575

52.785

58.995

65.205

6

Miles

3.726

9.936

16.146

22.356

28.566

34.776

40.986

47.196

53.406

59.616

65.826

7

Miles

4.347

10.557

16.767

22.977

29.187

35.397

41.607

47.817

54.027

60.237

66.447

8

Miles

4.968

11.178

17.388

23.598

29.808

36.018

42.228

48.438

54.648

60.858

67.068

9

Miles

5.589

11.799

18.009

24.219

30.429

36.639

42.849

49.059

55.269

61.479

67.689

Km

80

90

100

40

50

60

70

0

10

20

30

13-2

in2

60

70

80

30

40

50

90

100

0

10

20

0 cm2

0.000

64.620

129.240

193.860

258.480

323.100

387.720

452.340

516.960

581.580

646.200

1 cm2

6.462

71.082

135.702

200.322

264.942

329.562

394.182

458.802

523.422

588.042

652.662

2 cm2

12.924

77.544

142.164

206.784

271.404

336.024

400.644

465.264

529.884

594.504

659.124

3 cm2

19.386

84.006

148.626

213.246

277.866

342.486

407.106

471.726

536.346

600.966

665.586

4 cm2

25.848

90.468

155.088

219.708

284.328

348.948

413.568

478.188

542.808

607.428

672.048

5 cm2

32.310

96.930

161.550

226.170

290.790

355.410

420.030

484.650

549.270

613.890

678.510

6 cm2

38.772

103.392

168.012

232.632

297.252

361.872

426.492

491.112

555.732

620.352

684.972

7 cm2

45.234

109.854

174.474

239.094

303.714

368.334

432.954

497.574

562.194

626.814

691.434

8 cm2

51.696

116.316

180.936

245.556

310.176

374.796

439.416

504.036

568.656

633.276

697.896

9 cm2

58.158

122.778

187.398

252.018

316.638

381.258

445.878

510.498

575.118

639.738

704.358

in2

60

70

80

30

40

50

90

100

0

10

20 cm2

70

80

90

100

0

10

20

30

40

50

60

0 in2

0.000

1.550

3.100

4.650

6.200

7.750

9.300

10.850

12.400

13.950

15.500

1 in2

0.155

1.705

3.255

4.805

6.355

7.905

9.455

11.005

12.555

14.105

15.655

2 in2

0.310

1.860

3.410

4.960

6.510

8.060

9.610

11.160

12.710

14.260

15.810

3 in2

0.465

2.015

3.565

5.115

6.665

8.215

9.765

11.315

12.865

14.415

15.965

4 in2

0.620

2.170

3.720

5.270

6.820

8.370

9.920

11.470

13.020

14.570

16.120

5 in2

0.775

2.325

3.875

5.425

6.975

8.525

10.075

11.625

13.175

14.725

16.275

6 in2

0.930

2.480

4.030

5.580

7.130

8.680

10.230

11.780

13.330

14.880

16.430

7 in2

1.085

2.635

4.185

5.735

7.285

8.835

10.385

11.935

13.485

15.035

16.585

8 in2

1.240

2.790

4.340

5.890

7.440

8.990

10.540

12.090

13.640

15.190

16.740

9 in2

1.395

2.945

4.495

6.045

7.595

9.145

10.695

12.245

13.795

15.345

16.895

cm2

70

80

90

100

0

10

20

30

40

50

60 in3

30

40

50

0

10

20

0 cm3(cc)

0.000

163.870

327.740

491.610

655.480

819.350

60 983.220

70 1147.090

80 1310.960

90 1474.830

100 1638.700

1 cm3(cc)

16.387

180.257

344.127

2 cm3(cc)

32.774

196.644

360.514

3 cm3(cc)

49.161

213.031

376.901

4 5 6 cm3(cc) cm3(cc) cm3(cc)

65.548

229.418

393.288

81.935

245.805

409.675

98.322

262.192

426.062

7 cm3(cc)

114.709

278.579

442.449

8 cm3(cc)

131.096

294.966

458.836

507.997

671.867

835.737

524.384

688.254

852.124

540.771

704.641

868.511

557.158

721.028

884.898

573.545

737.415

901.285

589.932

753.802

917.672

606.319

770.189

934.059

622.706

786.576

950.446

999.607

1015.994

1032.381

1048.768

1065.155

1081.542

1097.929

1114.316

1163.477

1179.864

1196.251

1212.638

1229.025

1245.412

1261.799

1278.186

1327.347

1343.734

1360.121

1376.508

1392.895

1409.282

1425.669

1442.056

1491.217

1507.604

1523.991

1540.378

1556.765

1573.152

1589.539

1605.926

1655.087

1671.474

1687.861

1704.248

1720.635

1737.022

1753.409

1769.796

9 cm3(cc)

147.483

311.353

475.223

639.093

802.963

966.833

1130.703

1294.573

1458.443

1622.313

1786.183

in3

80

90

100

30

40

50

0

10

20

60

70 cm3(cc)

70

80

90

40

50

60

100

0

10

20

30

0 in3

0.0000

0.6103

1.2205

1.8308

2.4410

3.0513

3.6615

4.2718

4.8820

5.4923

6.1025

1 in3

0.0610

0.6713

1.2815

1.8918

2.5020

3.1123

3.7225

4.3328

4.9430

5.5533

6.1635

2 in3

0.1221

0.7323

1.3426

1.9528

2.5631

3.1733

3.7836

4.3938

5.0041

5.6143

6.2246

3 in3

0.1831

0.7933

1.4036

2.0138

2.6241

3.2343

3.8446

4.4548

5.0651

5.6753

6.2856

4 in3

0.2441

0.8544

1.4646

2.0749

2.6851

3.2954

3.9056

4.5159

5.1261

5.7364

6.3466

5 in3

0.3051

0.9154

1.5256

2.1359

2.7461

3.3564

3.9666

4.5769

5.1871

5.7974

6.4076

6 in3

0.3662

0.9764

1.5867

2.1969

2.8072

3.4174

4.0277

4.6379

5.2482

5.8584

6.4687

7 in3

0.4272

1.0374

1.6477

2.2579

2.8682

3.4784

4.0887

4.6989

5.3092

5.9194

6.5297

8 in3

0.4882

1.0985

1.7087

2.3190

2.9292

3.5395

4.1497

4.7600

5.3702

5.9805

6.5907

9 in3

0.5492

1.1595

1.7697

2.3800

2.9902

3.6005

4.2107

4.8210

5.4312

6.0415

6.6517

cm3(cc)

70

80

90

40

50

60

100

0

10

20

30

13-3

US gal

40

50

60

70

80

90

100

0

10

20

30

0

Liters

0.000

37.854

75.708

113.562

151.416

189.270

227.124

264.978

302.832

340.686

378.540

1

Liters

3.785

41.639

79.493

117.347

155.201

193.055

230.909

268.763

306.617

344.471

382.325

2

Liters

7.571

45.425

83.279

121.133

158.987

196.841

234.695

272.549

310.403

348.257

386.111

3

Liters

11.356

49.210

87.064

124.918

162.772

200.626

238.480

276.334

314.188

352.042

389.896

4

Liters

15.142

52.996

90.850

128.704

166.558

204.412

242.266

280.120

317.974

355.828

393.682

5

Liters

18.927

56.781

94.635

132.489

170.343

208.197

246.051

283.905

321.759

359.613

397.467

6

Liters

22.712

60.566

98.420

136.274

174.128

211.982

249.836

287.690

325.544

363.398

401.252

7

Liters

26.498

64.352

102.206

140.060

177.914

215.768

253.622

291.476

329.330

367.184

405.038

8

Liters

30.283

68.137

105.991

143.845

181.699

219.553

257.407

295.261

333.115

370.969

408.823

9

Liters

34.069

71.923

109.777

147.631

185.485

223.339

261.193

299.047

336.901

374.755

412.609

US gal

40

50

60

70

80

90

100

0

10

20

30

Liters

60

70

80

90

100

30

40

50

0

10

20

0

US gal

0.000

2.642

5.284

7.926

10.568

13.210

15.852

18.494

21.136

23.778

26.420

1

US gal

0.264

2.906

5.548

8.190

10.832

13.474

16.116

18.758

21.400

24.042

26.684

2

US gal

0.528

3.170

5.812

8.454

11.096

13.738

16.380

19.022

21.664

24.306

26.948

3

US gal

0.793

3.435

6.077

8.719

11.361

14.003

16.645

19.287

21.929

24.571

27.213

4

US gal

1.057

3.699

6.341

8.983

11.625

14.267

16.909

19.551

22.193

24.835

27.477

5

US gal

1.321

3.963

6.605

9.247

11.889

14.531

17.173

19.815

22.457

25.099

27.741

6

US gal

1.585

4.227

6.869

9.511

12.153

14.795

17.437

20.079

22.721

25.363

28.005

7

US gal

1.849

4.491

7.133

9.775

12.417

15.059

17.701

20.343

22.985

25.627

28.269

8

US gal

2.114

4.756

7.398

10.040

12.682

15.324

17.966

20.608

23.250

25.892

28.534

9

US gal

2.378

5.020

7.662

10.304

12.946

15.588

18.230

20.872

23.514

26.156

28.798

Liters

60

70

80

90

100

30

40

50

0

10

20

Imp. gal

0

10

20

0

Liters

0.0000

45.4600

90.9200

1

Liters

4.5460

50.0060

95.4660

2

Liters

9.0920

54.5520

100.0120

30 136.3800

140.9260

145.4720

40 181.8400

186.3860

190.9320

50 227.3000

231.8460

236.3920

60 272.7600

277.3060

281.8520

70 318.2200

322.7660

327.3120

80 363.6800

368.2260

372.7720

90 409.1400

413.6860

418.2320

100 454.6000

459.1460

463.6920

3

Liters

13.6380

59.0980

104.5580

150.0180

195.4780

240.9380

286.3980

331.8580

377.3180

422.7780

468.2380

4

Liters

18.1840

63.6440

109.1040

154.5640

200.0240

245.4840

290.9440

336.4040

381.8640

427.3240

472.7840

5

Liters

22.7300

68.1900

113.6500

159.1100

204.5700

250.0300

295.4900

340.9500

386.4100

431.8700

477.3300

6

Liters

27.2760

7

Liters

31.8220

8

Liters

36.3680

9

Liters

40.9140

72.7360

77.2820

81.8280

86.3740

118.1960

122.7420

127.2880

131.8340

163.6560

168.2020

172.7480

177.2940

209.1160

213.6620

218.2080

222.7540

254.5760

259.1220

263.6680

268.2140

300.0360

304.5820

309.1280

313.6740

345.4960

350.0420

354.5880

359.1340

390.9560

395.5020

400.0480

404.5940

436.4160

440.9620

445.5080

450.0540

481.8760

486.4220

490.9680

495.5140

Imp. gal

40

50

60

0

10

20

30

70

80

90

100

Liters

80

90

100

50

60

70

0

10

20

30

40

0 gal

0.0000

2.2000

4.4000

6.6000

8.8000

11.0000

13.2000

15.4000

17.6000

19.8000

22.0000

1 gal

0.2200

2.4200

4.6200

6.8200

9.0200

11.2200

13.4200

15.6200

17.8200

20.0200

22.2200

2 gal

0.4400

2.6400

4.8400

7.0400

9.2400

11.4400

13.6400

15.8400

18.0400

20.2400

22.4400

3 gal

0.6600

2.8600

5.0600

7.2600

9.4600

11.6600

13.8600

16.0600

18.2600

20.4600

22.6600

4 gal

0.8800

3.0800

5.2800

7.4800

9.6800

11.8800

14.0800

16.2800

18.4800

20.6800

22.8800

5 gal

1.1000

3.3000

5.5000

7.7000

9.9000

12.1000

14.3000

16.5000

18.7000

20.9000

23.1000

6 gal

1.3200

3.5200

5.7200

7.9200

10.1200

12.3200

14.5200

16.7200

18.9200

21.1200

23.3200

7 gal

1.5400

3.7400

5.9400

8.1400

10.3400

12.5400

14.7400

16.9400

19.1400

21.3400

23.5400

8 gal

1.7600

3.9600

6.1600

8.3600

10.5600

12.7600

14.9600

17.1600

19.3600

21.5600

23.7600

9 gal

1.9800

4.1800

6.3800

8.5800

10.7800

12.9800

15.1800

17.3800

19.5800

21.7800

23.9800

Liters

80

90

100

50

60

70

0

10

20

30

40

13-4

lbs

0

10

0

Kg

0.000

4.536

20 9.072

30 13.608

40 18.144

50 22.680

60 27.216

70 31.752

80 36.288

90 40.824

100 45.360

1

Kg

0.454

4.990

9.526

14.062

18.598

23.134

27.670

32.206

36.742

41.278

45.814

2

Kg

0.907

5.443

9.979

14.515

19.051

23.587

28.123

32.659

37.195

41.731

46.267

3

Kg

1.361

5.897

4

Kg

1.814

6.350

5

Kg

2.268

6.804

6

Kg

2.722

7.258

10.433

10.886

11.340

11.794

14.969

15.422

15.876

16.330

19.505

19.958

20.412

20.866

24.041

24.494

24.948

25.402

28.577

29.030

29.484

29.938

33.113

33.566

34.020

34.474

37.649

38.102

38.556

39.010

42.185

42.638

43.092

43.546

46.721

47.174

47.628

48.082

7

Kg

3.175

7.711

12.247

16.783

21.319

25.855

30.391

34.927

39.463

43.999

48.535

8

Kg

3.629

8.165

12.701

17.237

21.773

26.309

30.845

35.381

39.917

44.453

48.989

9

Kg

4.082

8.618

13.154

17.690

22.226

26.762

31.298

35.834

40.370

44.906

49.442

lbs

50

60

70

80

90

100

0

10

20

30

40

Kg

0

0 lbs

0.000

10 22.046

1 lbs

2.205

24.251

2 lbs

4.409

26.455

3 lbs

6.614

4 lbs

8.818

5 lbs

11.023

6 lbs

13.228

28.660

30.864

33.069

35.274

7 lbs

15.432

37.478

8 lbs

17.637

39.683

9 lbs

19.841

41.887

20 44.092

30 66.138

46.297

68.343

48.501

70.547

50.706

52.910

55.115

57.320

72.752

74.956

77.161

79.366

59.524

81.570

61.729

83.775

63.933

85.979

40 88.184

90.389

92.593

94.798

97.002

99.207 101.412

103.616

105.821 108.025

50 110.230

112.435

114.639

116.844 119.048 121.253 123.458

125.662

127.867 130.071

60 132.276

134.481

136.685

138.890 141.094 143.299 145.504

147.708

149.913 152.117

70 154.322

156.527

158.731

160.936 163.140 165.345 167.550

169.754

171.959 174.163

80 176.368

178.573

180.777

182.982 185.186 187.391 189.596

191.800

194.005 196.209

90 198.414

200.619

202.823

205.028 207.232 209.437 211.642

213.846

216.051 218.255

100 220.460

222.665

224.869

227.074 229.278 231.483 233.688

235.892

238.097 240.301

Kg

60

70

80

90

100

0

10

20

30

40

50

Kg

0

0

N

0.000

1

N

9.807

2

N

19.614

3

N

4

N

5

N

6

N

29.421

39.228

49.035

58.842

7

N

68.649

8

N

78.456

9

N

88.263

10 98.070

107.877

117.684

127.491 137.298 147.105 156.912

166.719

176.526 186.333

20 196.140

205.947

215.754

225.561 235.368 245.175 254.982

264.789

274.596 284.403

30 294.210

304.017

313.824

323.631 333.438 343.245 353.052

362.859

372.666 382.473

40 392.280

402.087

411.894

421.701 431.508 441.315 451.122

460.929

470.736 480.543

50 490.350

500.157

509.964

519.771 529.578 539.385 549.192

558.999

568.806 578.613

60 588.420

598.227

608.034

617.841 627.648 637.455 647.262

657.069

666.876 676.683

70 686.490

696.297

706.104

715.911 725.718 735.525 745.332

755.139

764.946 774.753

80 784.560

794.367

804.174

813.981 823.788 833.595 843.402

853.209

863.016 872.823

90 882.630

892.437

902.244

912.051 921.858 931.665 941.472

951.279

961.086 970.893

100 980.700

990.507 1000.314 1010.121 1019.928 1029.735 1039.542 1049.349 1059.156 1068.963

Kg

40

50

60

70

80

0

10

20

30

90

100

N

0

0

Kg

0.000

10 10.197

20 20.394

30 30.591

40 40.788

50 50.985

1

Kg

1.020

11.217

21.414

31.611

41.808

52.005

2

Kg

2.039

12.236

22.433

32.630

42.827

53.024

3

Kg

3.059

13.256

14.276

15.296

16.315

23.453

24.473

25.493

26.512

33.650

34.670

35.690

36.709

43.847

44.867

45.887

46.906

54.044

4

Kg

4.079

55.064

5

Kg

5.099

56.084

6

Kg

6.118

57.103

7

Kg

7.138

17.335

27.532

37.729

47.926

58.123

8

Kg

8.158

18.355

28.552

38.749

48.946

59.143

60 61.182

70 71.379

80 81.576

90 91.773

62.202

72.399

82.596

92.793

63.221

73.418

83.615

93.812

64.241

74.438

84.635

94.832

65.261

75.458

85.655

95.852

66.281

76.478

86.675

96.872

67.300

77.497

87.694

97.891

68.320

78.517

88.714

98.911

69.340

79.537

89.734

70.359

80.556

90.753

99.931 100.950

100 101.970

102.990

104.009

105.029 106.049 107.069 108.088

109.108

110.128 111.147

9

Kg

9.177

19.374

29.571

39.768

49.965

60.162

13-5

N

30

40

50

0

10

20

60

70

80

90

100

80

90

100

40

50

60

70

0

10

20

30 lb/ in2(PSI) 0

Kg/ cm2

0.0000

0.7031

1.4062

2.1093

2.8124

3.5155

4.2186

4.9217

5.6248

6.3279

7.0310

1

Kg/ cm2

0.0703

0.7734

1.4765

2.1796

2.8827

3.5858

4.2889

4.9920

5.6951

6.3982

7.1013

2

Kg/ cm2

0.1406

0.8437

1.5468

2.2499

2.9530

3.6561

4.3592

5.0623

5.7654

6.4685

7.1716

3

Kg/ cm2

0.2109

0.9140

1.6171

2.3202

3.0233

3.7264

4.4295

5.1326

5.8357

6.5388

7.2419

4

Kg/ cm2

0.2812

0.9843

1.6874

2.3905

3.0936

3.7967

4.4998

5.2029

5.9060

6.6091

7.3122

5

Kg/ cm2

0.3516

1.0547

1.7578

2.4609

3.1640

3.8671

4.5702

5.2733

5.9764

6.6795

7.3826

6

Kg/ cm2

0.4219

1.1250

1.8281

2.5312

3.2343

3.9374

4.6405

5.3436

6.0467

6.7498

7.4529

7

Kg/ cm2

0.4922

1.1953

1.8984

2.6015

3.3046

4.0077

4.7108

5.4139

6.1170

6.8201

7.5232

8 9

Kg/ cm2 Kg/ cm2

0.5625

1.2656

1.9687

2.6718

0.6328

1.3359

2.0390

2.7421

3.3749

4.0780

4.7811

5.4842

6.1873

6.8904

7.5935

3.4452

4.1483

4.8514

5.5545

6.2576

6.9607

7.6638

lb/ in2(PSI)

80

90

100

40

50

60

70

0

10

20

30

Kg/ cm2

0

10

20

30

40

50

60

0

0.00

142.23

284.46

426.69

568.92

711.15

853.38

70 995.61

80 1137.84

90 1280.07

100 1422.30

1

14.22

156.45

298.68

440.91

583.14

725.37

867.60

1009.83

1152.06

1294.29

1436.52

2

28.45

170.68

312.91

455.14

597.37

739.60

881.83

1024.06

1166.29

1308.52

1450.75

3

42.67

184.90

327.13

469.36

611.59

753.82

896.05

1038.28

1180.51

1322.74

1464.97

4

56.89

199.12

341.35

483.58

625.81

768.04

910.27

1052.50

1194.73

1336.96

1479.19

5

71.12

213.35

355.58

497.81

640.04

782.27

924.50

1066.73

1208.96

1351.19

1493.42

6

85.34

227.57

369.80

512.03

654.26

796.49

938.72

1080.95

1223.18

1365.41

1507.64

7 8 9 lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi) lb/ in2(psi)

99.56

241.79

384.02

526.25

668.48

810.71

952.94

1095.17

1237.40

1379.63

1521.86

113.78

256.01

398.24

540.47

682.70

824.93

967.16

1109.39

1251.62

1393.85

1536.08

128.01

270.24

412.47

554.70

696.93

839.16

981.39

1123.62

1265.85

1408.08

1550.31

Kg/ cm2

0

10

20

30

40

50

60

70

80

90

100

Kg/ cm2

30

40

50

60

70

80

0

10

20

90

100

0

Kpa

0.0

980.7

1961.4

2942.1

3922.8

4903.5

5884.2

6864.9

7845.6

8826.3

9807.0

1

Kpa

98.1

1078.8

2059.5

3040.2

4020.9

5001.6

5982.3

6963.0

7943.7

8924.4

9905.1

2

Kpa

196.1

1176.8

2157.5

3138.2

4118.9

5099.6

6080.3

7061.0

8041.7

9022.4

10003.1

3

Kpa

294.2

1274.9

2255.6

3236.3

4217.0

5197.7

6178.4

7159.1

8139.8

9120.5

10101.2

4

Kpa

392.3

1373.0

2353.7

3334.4

4315.1

5295.8

6276.5

7257.2

8237.9

9218.6

10199.3

5

Kpa

490.4

1471.1

2451.8

3432.5

4413.2

5393.9

6374.6

7355.3

8336.0

9316.7

10297.4

6

Kpa

588.4

1569.1

2549.8

3530.5

4511.2

5491.9

6472.6

7453.3

8434.0

9414.7

10395.4

7

Kpa

686.5

1667.2

2647.9

3628.6

4609.3

5590.0

6570.7

7551.4

8532.1

9512.8

10493.5

8

Kpa

784.6

1765.3

2746.0

9

Kpa

882.6

1863.3

2844.0

3726.7

4707.4

5688.1

6668.8

7649.5

8630.2

3824.7

4805.4

5786.1

6766.8

7747.5

8728.2

9610.9

9708.9

10591.6

10689.6

Kg/ cm2

30

40

50

60

70

80

0

10

20

90

100

Kpa

0

1000

2000

3000

4000

5000

0

Kg/ cm2

0.000

10.197

20.394

30.591

40.788

50.985

6000

7000

61.182

71.379

8000 81.576

9000 91.773

10000 101.970

100

Kg/ cm2

1.020

11.217

21.414

31.611

41.808

52.005

62.202

72.399

82.596

92.793

102.990

200

Kg/ cm2

2.039

12.236

22.433

32.630

42.827

53.024

63.221

73.418

83.615

93.812

104.009

300

Kg/ cm2

3.059

13.256

23.453

33.650

43.847

54.044

64.241

74.438

84.635

94.832

105.029

400

Kg/ cm2

4.079

14.276

24.473

34.670

44.867

55.064

65.261

75.458

85.655

95.852

106.049

500

Kg/ cm2

5.099

15.296

25.493

35.690

45.887

56.084

66.281

76.478

86.675

96.872

107.069

600

Kg/ cm2

6.118

16.315

26.512

36.709

46.906

57.103

67.300

77.497

87.694

97.891

108.088

700

Kg/ cm2

7.138

17.335

27.532

37.729

47.926

58.123

68.320

78.517

88.714

98.911

109.108

800 900

Kg/ cm2 Kg/ cm2

8.158

18.355

9.177

19.374

28.552

38.749

48.946

59.143

29.571

39.768

49.965

60.162

69.340

79.537

70.359

80.556

89.734

90.753

99.931

100.950

110.128

111.147

Kpa

6000

7000

8000

9000

10000

0

1000

2000

3000

4000

5000

13-6

50

60

70

80

10

20

30

40

90

100

0 1 2

Kg- m Kg- m Kg- m

0.138

1.518

1.380

2.760

4.140

5.520

6.900

8.280

9.660

11.040

12.420

13.800

2.898

4.278

5.658

7.038

8.418

9.798

11.178

12.558

13.938

0.276

1.656

3.036

4.416

5.796

7.176

8.556

9.936

11.316

12.696

14.076

3 4

Kg- m Kg- m

0.414

1.794

3.174

4.554

5.934

7.314

8.694

10.074

11.454

12.834

14.214

0.552

1.932

3.312

4.692

6.072

7.452

8.832

10.212

11.592

12.972

14.352

5

Kg- m

0.690

2.070

3.450

4.830

6.210

7.590

8.970

10.350

11.730

13.110

14.490

6

Kg- m

0.828

2.208

3.588

4.968

6.348

7.728

9.108

10.488

11.868

13.248

14.628

7

Kg- m

0.966

2.346

3.726

5.106

6.486

7.866

9.246

10.626

12.006

13.386

14.766

8

Kg- m

1.104

2.484

3.864

5.244

6.624

8.004

9.384

10.764

12.144

13.524

14.904

9

Kg- m

1.242

2.622

4.002

5.382

6.762

8.142

9.522

10.902

12.282

13.662

15.042

ft lbs

50

60

70

80

10

20

30

40

90

100

10

0 1 2 3 4 5 6 7

ft- lbs ft- lbs ft- lbs ft- lbs ft- lbs ft- lbs ft- lbs ft- lbs

72.300

20 144.600

30 216.900

40 289.200

50 361.500

60 433.800

70 506.100

80 578.400

90 650.700

100 723.000

7.230

79.530

151.830

224.130

296.430

368.730

441.030

513.330

585.630

657.930

730.230

14.470

86.770

159.070

231.370

303.670

375.970

448.270

520.570

592.870

665.170

737.470

21.690

93.990

166.290

238.590

310.890

383.190

455.490

527.790

600.090

672.390

744.690

28.930

101.230

173.530

245.830

318.130

390.430

462.730

535.030

607.330

679.630

751.930

36.170

108.470

180.770

253.070

325.370

397.670

469.970

542.270

614.570

686.870

759.170

43.400

115.700

188.000

260.300

332.600

404.900

477.200

549.500

621.800

694.100

766.400

50.630

122.930

195.230

267.530

339.830

412.130

484.430

556.730

629.030

701.330

773.630

8 9

ft- lbs ft- lbs

57.870

130.170

202.470

274.770

347.070

419.370

491.670

563.970

636.270

708.570

780.870

65.100

137.400

209.700

282.000

354.300

426.600

498.900

571.200

643.500

715.800

788.100

Kg- m

50

60

70

80

10

20

30

40

90

100

N- m N- m N- m

10 98.100

20 196.200

30 294.300

40 392.400

50 490.500

60 588.600

70 686.700

80 784.800

90 882.900

100 981.000

9.810

107.910

206.010

304.110

402.210

500.310

598.410

696.510

794.610

892.710

990.810

19.610

117.710

215.810

313.910

412.010

510.110

608.210

706.310

804.410

902.510

N- m

29.420

127.520

225.620

323.720

421.820

519.920

618.020

716.120

814.220

912.320

1000.610

1010.420

Kilogram meters to new tonmeters

4

N- m

39.230

137.330

235.430

333.530

431.630

529.730

627.830

725.930

824.030

922.130

1020.230

5

N- m

49.030

147.130

245.230

343.330

441.430

539.530

637.630

735.730

833.830

931.930

1030.030

6

N- m

58.810

156.910

255.010

353.110

451.210

549.310

647.410

745.510

843.610

941.710

1039.810

N- m

68.650

166.750

264.850

362.950

461.050

559.150

657.250

755.350

853.450

951.550

1049.650

N- m

78.450

176.550

274.650

372.750

470.850

568.950

667.050

765.150

863.250

961.350

1059.450

N- m

88.260

186.360

284.460

382.560

480.660

578.760

676.860

774.960

873.060

971.160

1069.260

50

60

70

80

10

20

30

40

90

100

0

100

200

300

400

500

600

700

0

Kg- m

0.000

10.200

20.400

30.600

40.800

51.000

800

900

61.200

71.400

81.600

91.800

1000 102.000

10

Kg- m

1.020

11.220

21.420

31.620

41.820

52.020

62.220

72.420

82.620

92.820

103.020

20

Kg- m

2.040

12.240

22.440

32.640

42.840

53.040

63.240

73.440

83.640

93.840

104.040

30

Kg- m

3.060

13.260

23.460

33.660

43.860

54.060

64.260

74.460

84.660

94.860

105.060

40

Kg- m

4.080

14.280

24.480

34.680

44.880

55.080

65.280

75.480

85.680

95.880

106.080

50

Kg- m

5.100

15.300

25.500

35.700

45.900

56.100

66.300

76.500

86.700

96.900

107.100

60

Kg- m

6.120

16.320

26.520

36.720

46.920

57.120

67.320

77.520

87.720

97.920

108.120

70

Kg- m

7.140

17.340

27.540

37.740

47.940

58.140

68.340

78.540

88.740

98.940

109.140

80

Kg- m

8.160

18.360

28.560

38.760

48.960

59.160

69.360

79.560

89.760

99.960

110.160

90

Kg- m

9.180

19.380

29.580

39.780

49.980

60.180

70.380

80.580

90.780

100.980

111.180

N- m

0

100

200

300

400

500

600

700

800

900

1000

13-7

Temperature

˚F

- 20

- 15

- 10

- 5

0

1

10

15

20

25

4

5

2

3

50

55

60

65

30

35

40

45

70

75

80

85

90

- 9.4

- 6.7

- 3.9

- 1.1

1.7

4.4

7.2

10.0

- 20.6

- 17.8

- 17.2

- 16.7

- 16.1

- 15.6

- 15.0

- 12.2

12.8

15.6

18.3

21.1

23.9

26.7

29.4

32.2

Fahrenheit to Centigrade

˚C

- 28.9

- 26.1

- 23.3

˚F

135

140

145

150

155

160

165

170

95

100

105

110

115

120

125

130

175

180

185

190

195

200

205

210

˚C

35.0

37.8

40.6

43.3

46.1

48.9

51.7

76.7

79.4

82.2

85.0

87.8

90.6

93.3

96.1

54.4

57.2

60.0

62.8

65.6

68.3

71.1

73.9

98.9

100.0

˚C

- 14

- 12

- 10

- 8

- 6

- 4

- 2

0

- 30

- 28

- 26

- 24

- 22

- 20

- 18

- 16

10

12

14

16

6

8

2

4

28

30

32

34

20

22

24

26

71.6

75.2

78.8

82.4

86.0

89.6

93.2

46.4

50.0

53.6

57.2

60.8

64.4

68.0

Centigrade to Fahrenheit

˚F

- 22.0

- 18.4

- 14.8

˚C

17.6

21.2

24.8

28.4

32.0

35.6

39.2

42.8

- 11.2

- 7.6

- 4.0

- 0.4

3.2

6.8

10.4

14.0

44

46

48

50

36

38

40

42

76

78

80

82

68

70

72

74

60

62

64

66

52

54

56

58

94

96

98

100

86

88

90

92

150.8

154.4

158.0

161.6

165.2

168.8

172.4

176.0

179.6

183.2

186.8

190.4

194.0

197.6

201.2

204.8

208.4

212.0

122.0

125.6

129.2

132.8

136.4

140.0

143.6

147.2

˚F

96.8

100.4

104.0

107.6

111.2

114.8

118.4

13-8

T433/T503/T553

Workshop Manual for Tractors

Code No.

1517-960-001-0

Editor: Overseas service team #604-9, Namsan-dong, Changwon-city, Kyungnam, Korea

Printed on August. 2008

1st Edition