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Nortrac XT20 and XT25 Tractors

Owner’s Manual

Sold By

Northern Tool & Equipment, Inc.

P.O. Box 1299

Burnsville, MN 55337

Tel.: 1-800-222-5381 www.northerntool.com

YFXT20-25MAN

Nortrac 20XT and 25XT Tractors

Product Identification Data Sheet

Product Part Number

Product Model

Machine Serial Number

Chassis Serial Number

Engine Model

Engine Serial Number

Date of Purchase

Where Purchased/Contact

Information

Owner Name

Complete this form carefully at purchase.

All SNs in this form should be recorded completely (including letters).

Distributed by

Northern Tool + Equipment Co., Inc.

Burnsville, MN 55306-6936

Made in China

User Notices

Thank You

Thank you for purchasing a NorTrac tractor from Northern Tool + Equipment Company. We value you as a customer and wish you many years of safe and satisfied use of your tractor.

Using Your Owner’s Manual

This Owner’s Manual is an important part of your tractor and should remain with the tractor if you sell it.

Read this Owner’s Manual to help you and others avoid personal injury or damage to the tractor. This manual provides information on the safest and most effective use of the tractor. It will help you and others you might train to operate the tractor safely and correctly.

If you use the tractor with an implement or other attachment, use the safety and operating instructions in the owner’s manual for that implement or attachment along with this Owner’s Manual so you can operate the implement safely and correctly with the tractor.

While the tractor shown in this manual may differ slightly from your tractor model, the instructions in this manual will apply to your manual unless otherwise stated.

Disclaimer

The 20XT and 25XT tractor and its components may be changed by the manufacturer at any time without notice and may not correspond to the contents of this Owner’s Manual.

Overview

This manual describes safety precautions as well as running-in, proper usage, technical maintenance, adjustment, faults and troubleshooting methods for various parts of the Nortrac XT tractors. The manual gives an in-depth look and should be used as a reference tool for owners and maintenance personnel.

In this manual, the safety alert symbol prompts important safety information. When this symbol is seen, you should be alert to possible injuries or affects to the service performance of the machine.

WARNING:

Alerts you to safety hazards that could result in serious injury or even death.

NOTICE:

Alerts you to actions that could result in minor injuries or could damage the tractor or it’s implements and thus result in possible safety hazards.

IMPORTANT ISSUE:

Issues that may result in damage to the tractor, related machinery and/or the environment.

NOTE: Provides additional information on a given topic.

Please read the messages that follow the symbol carefully and make other operators aware of any potentially hazardous situations. This manual is an integral part of the product and should be kept with the tractor.

Please keep it in a safe, dry place. If you encounter any sections that you do not understand while going over the manual, please call 1-800-222-5381 for assistance.

Only those familiar with this manual and the characteristics of this machine should be allowed to operate, service and maintain the tractor. In addition, some government regulations specify that no one under the age of 16 may be employed to operate power machinery. (Refer to U.S. Department of Labor, Employment Standards Administration, Wage and Hour Division, Child Labor Bulletin

#102)

In employment conditions, current OSHA regulations state in part: “At the time of initial assignment and at least annually thereafter, the employer shall instruct every employee in the safe operation and servicing of all equipment with which the employee is, or will be, involved.”

Observe the accident prevention rules as well as other safety regulations and local traffic rules at all times.

The manufacturer is not liable for any damage to the machine or personal injury resulting from any unauthorized refitting of this machine or use of the tractor for tasks that are outside the scope of the tractors usage guidelines.

Table of Contents

Table of Contents

1.Safety Precautions .....................................................................................................................................1

1.1 Safety rules and notices of use .................................................................................................................1

1.2 Safety warning symbols ...........................................................................................................................6

1.3 Preventing farm machine hazards...........................................................................................................10

2. Operating Instructions ...........................................................................................................................14

2.1 Product description.................................................................................................................................15

2.2 Tractor operating mechanism and instructions .......................................................................................15

2.3 Starting the engine ..................................................................................................................................20

2.4 Starting the tractor ..................................................................................................................................22

2.5 Steering the tractor .................................................................................................................................22

2.6 Shifting the tractor..................................................................................................................................23

2.7 Differential lock operation......................................................................................................................23

2.8 Front drive axle operation ......................................................................................................................24

2.9 Tractor braking .......................................................................................................................................24

2.10 Tractor parking and engine shutdown ..................................................................................................25

2.11 Use, assembly and disassembly of the tire ...........................................................................................25

2.12 Use of counterweight............................................................................................................................25

2.13 Driver’s seat adjustment .......................................................................................................................26

2.14 Hydraulic suspension operation............................................................................................................26

2.15 Tractor break-in ....................................................................................................................................33

2.16 Common faults and troubleshooting methods ......................................................................................35

3. Accessories, Spare Parts and Consumables..........................................................................................43

3.1 Accessories .............................................................................................................................................43

3.2 List of consumables................................................................................................................................43

4. Maintenance Instructions ......................................................................................................................44

4.1 Technical maintenance regulations.........................................................................................................44

4.2 Clutch adjustment and maintenance .......................................................................................................48

4.3 Brake adjustment and maintenance ........................................................................................................50

4.4 Differential lock adjustment ...................................................................................................................51

4.5 Steering system adjustment ....................................................................................................................52

4.6 Front drive axle adjustment ....................................................................................................................53

4.7 Hydraulic lifting mechanism adjustment................................................................................................54

Table of Contents

4.8 Battery Maintenance...............................................................................................................................55

4.9 Dry air cleaner instructions ....................................................................................................................56

4.10 Fan belt adjustment...............................................................................................................................56

4.11 Engine oil sump level check and oil replacement.................................................................................57

4.12 Fuel filter maintenance .........................................................................................................................57

4.13 Engine oil filter maintenance................................................................................................................58

4.14 Lifter hydraulic oil filter maintenance..................................................................................................58

4.15 Front drive oil level check ....................................................................................................................58

4.16 Transmission mechanism maintenance ................................................................................................59

4.17 Lifter assembly maintenance ................................................................................................................59

4.18 Maintenance of fuel tank ......................................................................................................................60

4.19 Tire inflation pressure...........................................................................................................................60

4.20 Engine cooling system maintenance.....................................................................................................61

4.21 Bleeding the fuel system ......................................................................................................................61

5. Storage .....................................................................................................................................................62

5.1 Causes of damage ...................................................................................................................................62

5.2 Tractor storage ........................................................................................................................................62

5.3 Storage period maintenance of the tractor ..............................................................................................63

5.4 Removing tractor from storage...............................................................................................................63

6. Transportation ........................................................................................................................................64

7. Technical Specifications .........................................................................................................................65

7.1 Main technical specifications for XT series two-wheel drive tractors....................................................65

7.2 Main technical specifications for XT series four-wheel drive tractors ...................................................68

8. Disassembly and Disposal ......................................................................................................................70

9. Warranty Terms......................................................................................................................................71

10. Appendixes ............................................................................................................................................73

10.1 Tractors fuels, oils and solutions ..........................................................................................................73

10.2 Torque table of major bolts and nuts ....................................................................................................74

10.3 Tractor rolling bearing..........................................................................................................................75

10.4 Seals of the tractor chassis....................................................................................................................76

Safety Precautions

1.1 Safety Rules and Notices of Use

Reading Prior to Use

1 The instructions for use, maintenance, and the safety warning identifiers should be fully read and understood.

2. The correct usage and operating method should be observed.

3. Local traffic rules and safety regulations must be observed at all times.

Fig. 1-1

Reading prior to use

A Qualified Operator

1. When operating the machine, the driver must use sound judgment.

2. Never operate the tractor if you have been drinking or are tired.

3. The driver should read and understand this operators manual.

4. Drive slowly at first in order to test your skill level.

Fig.1-2

A qualified operator

Clothing

During the operation, the driver should avoid loose fitting clothing. Baggy and bulky clothes are not recommended.

Fig.1-3

Driver’s clothes

Fuel Usage

1. Diesel fuel is a combustible substance. Keep all fuel away from open flames.

2. The engine should be shut down prior to refueling.

3. Smoking is strictly prohibited when the fuel system is being refueled and overhauled.

4. Use a clean rag to wipe off any fuel or machine oil overflow.

Fig.1-4

Use of fuel

5. The requirements set out in the “Appendix” must be strictly complied with for fuel and lubricating oil quality assurance.

1

Safety Precautions

Waste Oil Placement

1. Used machine oil is a waste fuel substance. Do not discard at random.

2. The used acid from the battery is harmful to the environment. Do not discard at random.

Fig.1-5

Waste oil placement

Pipeline Leaks

Do not use your hand to check for leaks in the high-pressure oil pipe. You may use a paste- or wood-board to test for possible leaks.

Fig. 1-6 Pipeline leaks

Removing the Radiator Cap

Never remove the radiator cap when the engine is hot. Turn the engine off and wait until the engine has cooled, then turn the cap to the first position.

Once pressure has been reduced, you can then remove the cap.

Fig. 1-7

Removing the radiator cap

Electric Parts Maintenance

1. Remove the ignition switch key.

2. Never service any of the tractor’s electrical components without first removing the ground wire from the battery.

Fig. 1-8

Electric parts maintenance

In Case of Defects or Abnormal Operation

1. The tractor should not be operated “in spite of defects”. In case of a lack of oil pressure, excessively low oil pressure, an overly high water temperature or unusual sounds and smells, stop the tractor and troubleshoot the problem.

2. During lubrication maintenance and for any on-field adjustment, the engine should be shut down.

Fig. 1-9

In case of defects or abnormal operation

2

Safety Precautions

Emergency Procedures

1. In case of a brake failure, hold the steering wheel firmly, wait until the tractor has come to a complete stop and then shut down the engine.

2. If the steering malfunctions, brake immediately and shut down the engine.

3. If fire should occur, immediately shut down the engine. If a fire extinguisher is available, put out the flames at the source of the flame; if a fire extinguisher is not available, use sand or other non-flammable substance to fight the fire.

4.

After any safety incident, immediately dial any necessary emergency services (hospital, fire department) according to the situation and administer first-aid as necessary.

Warning:

1. Always operate the tractor in a safe and responsible manner to avoid injury and possible death.

2. Pay special attention to any obstacles that may impede progress or cause an accident before starting the tractor. Also check for obstacles and impediments that may be covered by the tractor, an implements or a trailer.

3. Never leave the driver’s seat to start and operate the tractor. Prior to the startup, make sure that various shift levers are in the neutral position, the throttle lever and the front drive control handle are disengaged and the lifter operating handle is in neutral to prevent the sudden start up of accessories.

4. Do not start the engine by bridging-over the solenoid. If you do this, the tractor could lose control and cause a dangerous situation, which could lead to injury or death.

5. Make sure that the pedals are free from obstacles and able to move unhindered to their home position. Never keep anything on the floor or around the pedals that could hinder treadle travel. An extra foot blanket or non-standard floor mats should not be used as they can hinder pedal movement and cause serious injury or damage.

6. Never get on or off the tractor while it is in motion.

7. Never climb under the tractor while the engine is running.

8. Always remove the keys, set all shift levels to neutral and lock the auxiliary brake handle before exiting the cab to avoid accidental start up and to keep the tractor from moving unattended.

9. Keep your speed under control at all times. Brake prior to turning in order to maintain your load and avoid tipping.

10. When crossing a bridge or going through a tunnel, pay full attention to the load height.

11. Use the lowest gear with the clutch enabled on a down slope. Never put the tractor in neutral and coast downhill as this can cause instability. Never change gears on a down slope as this can cause instability and a possible rollover.

12. Avoid sudden turns at high speed or using unilateral braking to turn as this can result in instability.

13. When driving on roads, obey all local traffic indicators and laws.

14. Keep a safe distance between the tractor and any other vehicles that may be on the road.

15. Roadbeds along the ditch line tend to be more fragile. Pay specific attention to the weight of

3

Safety Precautions your vehicle when riding on the road shoulder.

16. Never overload the tractor. Running the tractor over the specified limits can cause damage to the tractor and can result in injury.

17. When driving at night, make sure that you have proper lighting to avoid any collisions.

18. When working in tall grass or hay, a spark-extinguishing device must be affixed to the exhaust pipe to avoid accidental fires.

19. Always slow down when working in wet or rainy conditions to avoid slippage and instability.

20. Always operate the tractor at a safe speed.

21. When attaching implements, make sure all 3-Point hitch pins are securely fastened. When disconnecting implements assure all 3-Point hitch pins are disconnected.

22. When lifting, reduce engine speed to avoid damage to tractor and personal injury.

23. Upon charging the battery, insure proper ventilation.

24. Beware of overhead high voltage transmission line!

Caution:

1. Check nuts, bolts, nuts and other loose components regularly and tighten as required. This could prevent a potentially dangerous situation.

2. When the tractor runs by power take-off (PTO), make sure that there is a safety shield installed.

Never approach the PTO shaft when it is running. Never take sudden turns when the PTO shaft is under load, as this can damage the universal joint or the PTO shaft. When the PTO shaft is not in use, the lever should be returned to the neutral position.

3. After parking and before shutting down the tractor, the driver should remove the key from the ignition, set all gearshift levers to the neutral position, and lock the brake handle. This will prevent the tractor from accidental startup and unattended movement.

4. When parking the tractor on an incline, the hand braking should be engaged and the engine shut down. Put the tractor in gear, apply the auxiliary brake and use the triangle chocks to block the rear wheels.

5. Tire installation and adjustment should be done by trained personnel only, using special tools.

Faulty installation may cause a serious accident or damage.

6. When cleaning the radiator, shut down the tractor and allow the tank to cool for.

7.

Pay attention to all safety precautions when replacing or installing new parts on your tractor.

4

Safety Precautions

Important:

1. Always operate the tractor according to the specified running-in requirements. This will prolong the life of your tractor.

2. Prior to starting the tractor, the oil system, cooling system and electric circuits must be examined.

After startup, strict attention should be paid to the various instruments.

3. Before activating the PTO shaft, make sure that the equipment is properly inspected. When using

PTO implements, the angle between the PTO shaft and the universal joint drive shaft should be no more than a 15° angle; the hydraulic operating control should be neutral, and after the farm tool has been lifted, the included angle between the power take-off shaft and the universal joint drive shaft should be at no more than 20° angle. Never use the implement without checking for a proper connection with the power take-off. This can cause damage to the implement and severe damage to the tractor clutch and power train. To increase work efficiency, the power supply should never be shut off at the curve and the lifting height must be maintain at 200mm above the ground.

4. Hanging farm implements can shift tractor weight and should be low to the ground before exiting the tractor.

5. Antifreeze should always be used in the cooling system.

6. The front driving axle of tractor should only be engaged in agricultural instances and when roads are muddy. Overuse of the front drive axle may result in premature wear of the tires and transmission problems.

7. Only use parts recommended by the manufacturer to replace worn or broken components.

8.

Never rest your foot on the brake or clutch pedal when the tractor is in motion as this can cause premature wear of the brakes and clutch system.

5

Safety Precautions

9.

When detaching the tractor from any implements, the upper lever of the suspension unit should be adjusted to the shortest travel and the limit lever adjusted to prevent the implements from swinging out of control. The locking nuts on the upper and limit levers must be tighten in order to guarantee travel safety and to avoid damage to the tractor and the machinery.

1.2 Safety Warning Symbols

Caution:

1. All safety identifiers should be visible and easy to read. When dirty, wash with soapy water and clean them with a soft rag.

2. When the safety identifiers are lost or damaged, contact the sales department or the manufacturer for replacement stickers.

3. When replacing parts with attached Safety warning symbols,

the safety identifiers that correspond to that

4.

specific part need to be updated as well.

To prevent injury, accidents and damage, always comply with safety warning identifiers.

During machine operation, keep a safe distance from the hot surface of the machine, as it can cause serious burns. Post position: outer side of damper, water tank flank.

Fig. 1-10 Safety warning identifier IX

Please keep a safe distance from the tractor when it operating, to avoid any personal injuries.

Post position: left from the rear side of mudguard.

Fig. 1-11 Safety warning identifier IX

6

Safety Precautions

Never sit on the fender when the tractor is operating as this could result in falling from the vehicle and possible injury.

Post position: front side of the mudguard.

Fig. 1-12 Safety warning identifier VI

To avoid injury, stay a safe distance from the lifting lever when the lifting lever control system is in operation.

Post position: right rear side of the mudguard

Fig.1-13 Safety warning identifier III

Always shut down the engine and remove the key prior to maintenance and adjustment.

Post position: in front of the instrument panel.

Fig. 1-14 Safety warning identifier IX

Do not open or dismantle the safety hood and keep your hands free of the engine when it is running.

Post position: on the engine hood.

Fig. 1-15 Safety warning identifier IX

7

Safety Precautions

Always start the engine from a secure position in the pilot seat. Post position: in front of the instrument panel.

Post position: in front of the instrument panel.

Fig. 1-16 Safety startup symbol

Read and understand all instruction for use, including the meaning of all non-lettered safety symbols.

Post position: in front of the instrument panel.

Fig. 1-17 Reads the instruction identifiers

Never touch moving parts when the tractor is in motion.

Post position: on the PTO shield.

Stop

Fig. 1-18 PTO safety identifiers

Please follow the requirements for fuse connections, otherwise it may cause damage to the electric elements or create a fire.

Post position: near the electric appliance box.

Please follow the requirements for fuse connections, otherwise it may cause damage to the electrical elements or create a fire.

Fig. 1-19 Fuse safety warning symbol

8

Safety Precautions

For battery service, carefully read the instruction for use to understand the correct maintenance procedures.

Post position: on the surface of the battery.

Fig. 1-20 Battery symbol

To prevent the risk of fire, never refuel the tractor while it is running.

To prevent from fire

1 It is prohibited to refuel on the

Clean grease, fuel and oil spill immediately. When the tractor is fitted with of tractor

a piggyback reaper, smoking is prohibited.

3 grease traces on the oil tank

Post position: near the fuel tank

4 When the tractor is fitted with the piggyback reaper, it is prohibited to smoke on the work site and on board of tractor.

Fig. 1-21 Refueling fire protection identifiers

To prevent personal injury, please install the safety shield on the PTO shaft when it is not in use.

Post position: on the pneumatic brake cylinder

In order to prevent from the personal injury, please install the safety shield on the PTO shaft when it is not in use.

Fig. 1-22 PTO safety identifiers

9

Safety Precautions

Preventing Farm Machine Hazards

The following article describes important general safety precautions for machinery such as the NT-204C/NT-254 tractor.

It is reprinted here with permission from Professor Thomas L. Bean, Safety Leader and Professor, Department of Food,

Agricultural, and Biological Engineering, The Ohio State University Extension, The Ohio State University.

AEX-593-91

Thomas L. Bean

Each year, 2,600 farm residents are killed and 230,000 disabled in farm-related injuries, many due to farm machinery.

Farm machinery uses mechanical power to do work. This creates a number of possible hazards for both operators and bystanders. Even though manufacturers take many steps to make machinery safe, all hazards cannot be removed.

Some machine parts cannot be completely shielded and still do their job. For instance, a totally enclosed cutting blade could not cut.

Many machinery-related accidents result from human error. The operator either forgot something, took a shortcut or a risk, ignored a warning, wasn’t paying close attention, or failed to follow safety rules. In addition, guards removed for maintenance often aren’t replaced.

There are many different kinds of farm machinery: mowers, tractors, shredders, harvesters, grinders, blowers, augers, balers, etc. They all have similar characteristics and hazards. You can be cut, crushed, pulled in or struck by an object thrown by these machines. They have cutting edges, gears, chains, revolving shafts, rotating blades, pinch points and other hazards. You can also be injured if you fall while working on or near any of these machines.

Accidents with farm machinery are often serious, even fatal. It is important to recognize and be alert for machine hazards and to take precautions to avoid injury.

Shear and Cutting Points

Shear points (Fig. 1 below) are created when the edges of two objects are moved together closely enough to cut a soft material, as with a pair of shears or an auger. Cutting points are created when a single object moves forcefully or rapidly enough to cut, as with a rotary mower blade.

Figure 1

10

Safety Precautions

Both shear and cutting points are created on machinery designed to cut, such as harvesters, and on those that are not designed to cut, such as augers. They are hazardous because of their cutting force and they often move so rapidly that they may not be visible, so it is easy to forget they are operating or to underestimate the hazard.

Because some shear and cutting points cannot be guarded, it is important to be aware of their hazard and stay alert when they are operating. It is also important to warn others and to look out for their safety. This is especially true if there is a danger of thrown objects while using cutting-type equipment.

Pinch Points

Pinch points are another hazard of farm machinery (Fig. 2 below). Pinch points (which should be more appropriately named mangled or maimed points) are formed when two rotating objects move together and at least one of them moves in a circle. For example, the point at which a belt runs into a pulley is a pinch point. Belt drives, chain drives, and gear drives are other sources of pinch points in power transmission devices. Feed rolls, gathering chains and similar equipment designed to draw crops into the machine also create pinch points.

Figure 2

Fingers, hands and feet can be caught directly in pinch points, or they may be drawn into the pinch points by the inertia of the moving part or loose clothing that becomes entangled. Contact may be made by falling or brushing against unshielded parts. You can become entangled in pinch points if you take chances and reach or work near rotating parts. Machines move too fast to get out of a pinch point once you become caught.

To avoid injury from pinch points, be aware where pinch points occur and avoid them. Wear clothing that fits well and is not loose or floppy. Never reach over or work near rotating parts. Turn off machinery to work on it.

Always replace shields removed for maintenance.

Wrap Points

Rotating shafts are the most common source of wrap-point accidents, although any exposed machine part that rotates can be a wrap point. A cuff, sleeve, pant leg, long hair or just a thread can catch a rotating part and result in serious injury. Entanglement with a wrap point can pull you into the machine, or clothing may become so tightly wrapped that you are crushed or suffocated. In other cases, you could be thrown off balance and fall into other machinery parts.

Even a perfectly round shaft can be hazardous if there is enough pressure to hold clothing against the shaft. Hazards

11

Safety Precautions increase with shafts that are not round. Clothing is more likely to catch if there is dried mud or manure on the shaft, or if the shaft is nicked. Ends of shafts that protrude beyond bearings are also dangerous. Universal joints, keys and fastening devices can also snag clothing.

Check all equipment for potential wrap points and, if possible, shield those that can be shielded. Replace any damaged manufacturer-installed warning labels and place warnings on equipment parts not previously labeled. In addition, consider painting them a bright color, perhaps with wide stripes. Be aware of wrap points and be alert to their danger.

Crush Points

Crush points are created when two objects move toward each other or one object moves toward a stationary object.

For example, hitching tractors to implements (Fig. 3 below) creates a potential crush point.

Figure 3

Hitch accidents most commonly occur to fingers placed at the hitching point. Wait until the tractor has stopped before stepping into the hitching position. If possible, arrange the hitch point so that the tractor can be backed into position without anyone between. Always know what the other person is doing.

Failure to safely block up equipment can result in a fatal crushing injury. A jack may slip, a hose or overhead support may break, or the equipment may roll. Take extra precautions when working with machinery that is raised for any reason. The operator’s head or chest can be crushed between the equipment and a low beam or other part of a farm building. These accidents usually occur when the machine is being operated in reverse. Tree limbs are also potential hazards when working with tractors and other machinery.

To prevent being crushed or pinned, recognize and avoid potentially dangerous situations. Block all machinery securely if you must work under it. If an implement can roll freely, block its wheels so it cannot roll.

Free-Wheeling Parts

Many machine parts continue to spin after the power is shut off, including cutter heads of forage harvesters, hammer mills of feed grinders, rotary mower blades, fans and flywheels. Never touch these parts until they have stopped moving. This could take 2 to 21/2 minutes.

12

Safety Precautions

Springs

Compressed springs (Fig. 4 below) will expand with great force when released, and springs that are stretched will contract rapidly when released. Know what direction a spring will move and how it might affect another machine part when released, and stay out of its path.

Figure 4

Burn Points

Be aware of burn points: mufflers, manifolds and even gear cases under adverse climatic conditions. They may not be severe enough to seriously maim, but they can startle the operator enough to cause him or her to “jump” into more deadly danger.

Hydraulic Systems

Hydraulic systems contain fluid under extreme pressure. Before loosening, tightening, removing or otherwise working with any fittings or parts, relieve this pressure. Jet streams from even pinhole leaks can penetrate flesh. In addition, the liquid is often hot.

Before attempting any service on hydraulic systems, shut off the engine that powers the hydraulic pump. Lower the implement to the ground and relieve the pressure. Follow instructions in the operator’s manual because the specific procedures for servicing the systems are very important to your safety.

Funded in whole or in part from Grant Number U05/CCU506070-01, "Cooperative Agreement Program for

Agricultural Health Promotion Systems," National Institute for Occupational Safety and Health.

Reviewed by Dr. Randall Wood and Dr. Warren Roller.

13

Operation Description

Note: operating the tractor properly can bring efficiency of the tractor into full play to reduce tractor wear and prevent an accident and ensure operator to complete farm and road operations fast, efficiently, in low consumption and safety mode

Table 2-1 Common symbols

Symbols Definition Symbols Definition Symbols Definition

Safety warning identifier

Four-wheel drive

Horn

High beam

Dipped headlight

Quick

Engine oil pressure

Charging and discharging indication

Slowly

Steering light indicator

Syringe Position lamp

Engine preheated

Rear windscreen wiper wiper

Air filter blockage warning

Hydraulic oil air separator

Pneumatic braking invalid/failure

Engine coolant temperature

Quantity of fuel oil

Parking brake

Differential lock

Warning for danger

Warning lamp

14

Operation Description

2.1 Description of Products

The following information will help you use, maintain, and troubleshoot the Nortrac XT series tractors, including:

XT20 and XT25

The Nortrac XT series of tractors is a medium-sized tractor that can be used in a variety of land types. The tractor has a compact structure and is easy to control with responsive steering, a high lift capacity and low maintenance.

2.2 Tractor Operating Mechanism and Instrumentation

2.2.1 Tractor Operation Mechanism

Figur. 2-1

Tractor Operation Mechanism

1. Clutch pedal 2. Decompression lever. 3. Ignition-cut-off pull rod 4. Steering wheel

5. Front drive axle operation handle 6. Auxiliary shift lever 7. Power take-off (PTO) speed lever 10. Parking brake pedal. 9.Foot-operated throttle pedal 10. Parking brake handle 11. Main shift lever 12. Power take-off (PTO) lever 13. Multi-way valve control handle 14. Differential lock control handle 15. Hand operated throttle control handle 16. Distributor control handle

15

Instrumentation and Switches

Operation Description

Figure 2-2 Instrumentation and Switches

1. Left rocker switch assembly 2. Start relay 3. Pressure regulator 4. Fuse box assembly 5.

Ignition switch 6. Combined instrument 7. Right rocker switch assembly 8. Fuse box assembly

IMPORTANT NOTES: Observe all warning lights and pay attention to the instrument panel during operations.

Fuel Gauge

The fuel gauge indicates the amount of fuel in the tank When the indicator is in the far right position, it indicates the fuel tank is full of fuel; when the indicator is the left red area, it means the fuel tank is low and should be filled immediately.

Note: Never allow tractor to run out of fuel, it can damage the fuel pump.

Figure 2-3 Fuel Gauge

Water Temperature Gauge

The Water Temperature Gauge marks the engine cooling liquid temperature, moving from left to right with the red area indicating high temperature

Figure 2-4 Water Temperature Gauge

16

Operation Description

Engine tachometer

The engine tachometer shows the operating rotary speed of the engine once the tractor is started. Tractor running hours are displayed in the lower box.

Figure 2-5

Engine Tachometer

Amp meter

The Amp meter is used to indicate the status of the battery. The indicator will be in the + when the battery is properly charged.

Figure 2-6 Amp meter,

Engine Oil Pressure Warning Lamp is Red.

When the key is turned to the ignition position, the lamp is lit. After the engine starts, the lamp will be extinguished. It means the oil lube system pressure is normal

When the engine is idling, the light may be illuminating because it is normal that pressure in the lubrication system is low during the idling period. If the lamp is lit under normal engine rpm, it should be checked immediately after engine shut down.

Figure 2-7 Engine Oil Pressure Warning Lamp

17

Left Rocker Switch Assembly

Operation Description

Figure 2-9 Left Rocker Switch Combination

Signal Switch

Position 1: Left signal lamps are on.

Position 0: Power supply off.

Position 2: Right signal lamps are on.

Figure 2-10 Signal Switch

Work Lamp Switch

Position 2: Both position lamp and rear lights are on.

Position 1: Position lamp is on.

Position 0: Power supply off.

Figure 2-11 Work Lamp Switch

Right Rocker Switch Combination

1. Dimmer switch;2. Hazard alarm switch

Figure 2-12 Right Rocker Switch Combination

High/Low Dimmer Switch

Position 1: Spare.

Position 0: Low headlight on.

Position 2: High beam on.

Figure 2-13 Dimmer Switch

18

Operation Description

Hazard Warning Switch

The hazard warning switch should be used in case of a tractor malfunction where the tractor is stopped in a potentially dangerous area.

Figure 2-14 Hazard Warning Switch

Horn Switch

Horn switches are located on both arms of the steering wheel.

Figure 2-15 Horn Switch

Ignition Switch

Put the key into the electric switch and turn it clockwise to the following positions:

• Turn the key clockwise to ACC shift, which will turn on the auxiliary electrical devices.

• Turn the key to ON shift and the control circuit will be activated.

• When the key is turned to H shift, the preheating device will be turned on.

• Once preheated, turn the key to ST shift to start the engine After the engine is started release the key immediately, so that the key returns to the

“ON” position automatically.

To avoid burning out the starter, avoid turning the key to ST shift for more than 5 seconds.

Figure 2-16 ignition lock

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Operation Description

2.3 Starting the Engine

WARNING: Before operating, the tractor should be checked over thoroughly to eliminate potential accidents or breakdowns.

2.3.1 Engine Starting Preparations

Before starting the tractor, inspect for damaged or loose parts and leakage.

Check the engine oil pan, the gearbox, the rear axle and the lube oil level on the hydraulic system. The radiator should be filled with antifreeze and the fuel tank should be full.

Figure 2-17 throttle lever

Check the control lever of the gearbox and the PTO control handle. The main shift lever, PTO control handle and front drive axle control handle should be in the neutral position. The distributor control lever should be in the lowering position.

Turn the fuel shut-down knob to fuel shut-down cable. The oil-spraying pump should be in the oil- supplying position.

The throttle handle should be set at mid range.

Before starting a tractor that is new, recently overhauled or one that hasn’t been used for a long time, first discharge the air in fuel line to ensure that the diesel engine can start smoothly. The procedure is as follows: Release the bleeder screw on the diesel filter, then discharge the air in fuel line from fuel tank to the diesel filter using a hand pump until there are no bubbles in the discharged fuel. Then, unfasten the bleeder screw on the fuel pump to release the air until there are no air bubbles in the flow of fuel.

IMPORTANT NOTES:

1. Clean contaminants from the radiator screen regularly to avoid over heating the engine.

2.3.2 The Starter

IMPORTANT NOTES:

1. Release the key immediately after starting of engine. The key will return to the ON position automatically

(see Figure Igniting Lock). If not released, the engine will continue to rotate the starter, causing damage.

2. The key should be turned no longer than 5 seconds and you should allow 15 seconds of time between starts. To maintain the charging ability of the battery, do not try to start the tractor more than three times and troubleshoot in order to find the problem.

20

Operation Description

• Starting at ambient temperature (above 23 °F): Turn the key to the ON position to start the auxiliary and the control circuit. Then turn the key to the ST position to start the engine. Release the key immediately after starting (the key will return to the ON position automatically); When you have a safety start switch, first step on main clutch pedal and then turn the key to start the engine.

• Preheating start (for models with a preheating circuit)

When starting the tractor in low temperatures (below 23°F), use the preheating starting instructions. Put the throttle handle in the acceleration position, turn the key clockwise to H position and leave it on H for 15–20 seconds. Turn the key to the ST position to start the starter. Release it immediately after starting and the key will automatically return to the ON position.

Start with a traction tractor: When starting a traction tractor, the traction tractor uses High III or High IV gearing; for safety, the speed of traction tractor should not be higher than 15km/h.

Note: When starting a traction tractor, once the engine is started, step on main clutch pedal immediately and throttle down.

2.3.3 Running the Engine

• After the engine is started, ease up on the throttle immediately to allow the engine run at idle. Check the engine oil pressure to ensure that the indicator on the oil pressure gauge is in the green zone.

• After the engine is started, do not run a full-load immediately. The engine should be run at idle to medium speed to heat the engine. When the coolant temperature rises above 140

°F, you can then increase to high speed and operate at full load capacity.

• The engine rotary speed and load should be slowly increased or decreased, especially for a recently started engine; never use the throttle handle to run at high speed.

• When the tractor is running the engine oil pressure and coolant temperature shall be checked regularly.

During normal operations of the engine, the indicator on the oil pressure gauge and water thermometer should be in the green zone.

IMPORTANT NOTES: When the engine is running, the indicator on the engine oil pressure gauge should never be in the red zone. Troubleshoot immediately.

21

Operation Description

2.4 Starting the Tractor

• With the engine running at low speed, step on the clutch pedal. Then, put the gear box shift level in the right position.

• Release the brake pedal lock device.

• Check for obstructions and honk your horn.

• Release the clutch pedal immediately after starting to avoid the clutch slipping Gradually accelerated, so that the tractor can reach the required operation speed.

Figure 2-18 Starting the Tractor

• During use, never drive with the clutch semi-engagement in order to lower the tractor speed. Keep the clutch pedal free of obstructions in order to avoid accelerating the releasing rod and friction disc wear.

IMPORTANT NOTES:

To prevent damage to the drive gear in the gearbox or early clutch damage, do not start in high gear.

2.5 Steering the Tractor

2.5.1 When driving the tractor on the road, press the turn switch to light the indicator, and finally, make the turn. Reduce the speed before making a turn. If you have to make a large turn, make the turn at a slow speed.

2.5.2 When turning the tractor tightly or on loose/soft ground, you may experience some sideslip on the front wheel. When this happens, step on the corresponding brake pedal and rotate the wheel to make the turn.

WARNING:

1. Never make sharp turns when the tractor is moving at a high speed. When turning the front wheel sharply, to prevent damage to the hydraulic steering system, the steering wheel may pull back slightly. This is to prevent the hydraulic steering system from being overloaded.

2. Before making turns or backing up during field work, make sure that any machinery is lifted from the soil to avoid damage.

22

Operation Description

2.6 Shifting the Tractor

Shift 28+2, Shift Shuttle 8+8, Shift Creeping 16+4

• The main and auxiliary gear shift is controlled by one control handle to achieve 8+2 shifts. The main gear shift lever (A) has four gears (3 and one reverse shift–R. The auxiliary gear shift lever (B) has two speed ranges, L is low speed and H is high speed.

• Step on the clutch pedal and operate the auxiliary gear shift lever

(B). Push down from the neutral position; low shift, L. If lifting up

• Figure 2-19 Shifting the Tractor

• Step on the clutch pedal, push forward on the main shift lever (A) from the neutral position. Shift 1: pull backward. Shift 2: move to the left from neutral and then pull backward. Shift 3: push forward. Shift 4: move to the right from neutral and then push forward. Reverse gear shift (R).

If shift shuttle shift handle will be added on the left top of the instrument combined with the main/auxiliary gearshift rod (main gearshift rod cancels backward shift), 8 forward shifts and 8 backward shifts can be obtained.

• Select the operating speed to obtain optimum productivity and economy and prolongation of service life.

When working in field, the selected speed of the tractor should leave the engine load at 80%. When the tractor does light-duty operations at a low speed, high shift 1 can be used to save fuel by throttling down.

2.7 Differential Lock Operation

Differential Lock Operation

If the tractor is stuck, you can engage the differential lock using the following sequence, which will connect the left and right drive axle:

• Step on the main clutch pedal and engage the low gear.

• Push the throttle control handle to increase the supply position.

• Push forward on the differential lock operation rod (A) on the right bottom of the driver’s seat

Figure 2-20 Differential Lock Operation

• Release the clutch pedal smoothly to operate the tractor.

• After getting out of the obstruction, pull the differential lock lever (A) and operate in reverse to release.

IMPORTANT NOTES: When the tractor is running on normal surfaces, never use the differential lock. This will help you avoid damage to components and reduce tire wear.

23

Operation Description

2.8 Front Drive Axle Use

The Nortrac XT series of 4-wheel drive tractors can be used for normal operations in the field and on wet and soft soil. If only rear wheel drive is used, the traction performance of the tractor may not be enough. When this is the case, the front drive axle can be used to increase the traction force and decrease the slippage. In order to engage and release the front axle, the following operation sequence should be followed:

Connecting the Front Drive Axle

Step on the main clutch pedal, engage the gear and then release clutch pedal slowly. After the tractor moves a little, immediately pull the front drive axle control handle backward to change the two-wheel drive into four-wheel drive.

Disconnecting the Front Drive Axle

When you need to disengage the front drive axle, push downwards on the front drive axle handle to disengage.

IMPORTANT NOTES: When using the tractor to transport on a hard-surface road, never connect the front drive axle. Connecting the front drive axle can result in early wear of the front tire and excessive fuel consumption. In conditions where traction is a concern the front drive axle should be engaged. Once the tractor is back on a stabile surface, the front drive axle should be disengaged.

NOTE: When performing a transportation operation, the front wheel tires will wear rapidly and the left and right sides of tire tread patterns will worn unevenly. For this reason, it is a good practice to switch the left and right tires on occasion.

2.9 Tractor Braking

1. Reduce throttle, step on the clutch pedal, and then gradually step on the brake to stop and park the tractor.

2. In an emergency, step on the clutch and brake pedal simultaneously. Never step on the brake without stepping on the clutch. This can cause the engine to stall.

3. When running the tractor on the road, lock both the left and right brake pedals together with a locking plate.

2.9.2 Left/Right Brake Pedal Interlocking

When tractor is used on the road, lock both the left and right brake pedals together with a lock plate.

WARNING:

1. Prior to operating the tractor, make sure that the brakes are functioning properly. When the brakes are not in working order, this can result in an accident and/or serious injury.

2. When operating the tractor on the road, the left and right brake pedals should be interlocked to prevent the tractor from operating erratically or overturning when applying the brake.

24

Operation Description

2.10 Stopping the Tractor and Engine Flameout Procedures

1. Throttle down to decrease the tractor’s running speed.

2. Step on the clutch pedal, the brake pedal and lock the braking handle. When the tractor stops, put the gearshift in neutral.

3. Release the clutch/brake pedal, and reduce the throttle to make the engine run smoothly.

4. Pull the fuel shut-down cable back, which stops the fuel pump from supplying fuel.

5.

Turn starting switch key to the OFF position and shut off all power supply.

2.11 Tire Usage and Assembly/Disassembly

2.11.1 Tire Use

• The Tire is a consumable. Attention should be paid to its use and maintenance in order to prolong its service life.

• The tire has a specified loading value. If overloaded, the tire can wear excessively and possible rupture.

• Running a tire below its recommended pressure will cause the tire to wear unevenly and make the tractor difficult to operate. Pressure in the tire should be measured with a pressure gage in ambient temperature.

Don’t measure tire pressure immediately after operation because the tire will heat during use. Improper operation can wear or damage the tires prematurely. Avoid going over obstacle at high speed, emergency stopping or hard steering. When running over a gravel road, tire slippage should be avoided as much as possible.

• During use, the tires should be kept clean of any oil, acid, alkaline chemicals or corrosives. Keep the tires out of bright sunshine as much as possible, in order to avoid rubber aging and degrading.

• The front wheel alignment and toe-in should be checked regularly for correctness, in order to avoid tire wear. When tires wear is nonuniform, the left and right tires can be switched.

Important notes: The inflation pressure for the front and rear tires on a 4-wheel drive tractor should be the same in order to prevent the tires from being worn.

2.11.2 Tire Removal and Refit

Tire Removal

Special tools are needed to assemble and disassemble a tire. Contact a qualified tire service center to replace tires.

WARNING: When inflating the tire, never remove the lug nuts from the hub. This could cause the tire to fall off and may result in damage to the tractor and serious personal injury.

2.12 Counterweight

Counterweight is added or reduced according to the requirements of tractor. When traction force has to be increased for operating in a dry field or for transport operations, counterweight should be added. When the tractor is used in a hilly area, the front counterweight should be increased appropriately to maintain traction.

Rear counterweights are round iron castings with the weight being per piece is 68lbs. Two pieces can be installed, respectively making the total weight of the rear counterweight 136lbs. Each front counterweight is

20lbs. and a total of six pieces can be mounted, with the total mass of front counterweight at around 120lbs.

25

Operation Description

NOTE: Remove the counterweights from the wheel before removing the rear wheel from the tractor to avoid injury or damage.

2.13 Driver’s Seat Adjustment

The driver seat for series XT tractors can be adjusted in both a front and rear direction. During the course of adjusting, turn the adjustment handle (A) on the outside lower left of the driver’s seat (see diagram).

At the same time, move the seat forward or backward. Release the handle once the required position is achieved.

Figure 2-23 Driver’s Seat Adjustment

Note

For safety, the seat cannot be adjusted while the tractor is in motion.

2.14 Hydraulic Suspension Operation

The Series XT tractor uses a semi-separate hydraulic lifting system with two types of adjustment modes: position adjustment and height adjustment. Farm machinery is lifted and lowered through the distributor control handle. When the handle is pressed forward, the farm machinery will lower; when the handle is pulled back, the farm machinery will lift. For the highest lifting position and the lowest position of farm machinery, see “hydraulic lifting system adjustment”

2.14.1 Position Adjustment

When the tractor doesn’t have a land wheel, the position adjustment is used. The tilling depth of farm machinery is determined by the position of the lowering stopper in the reset push rod. When using, the lower stopper should be adjusted to the preset position. When the farm machinery lowers to a suitable depth, touch the lower stopper and the shift end of the handle will be pushed back to the neutral position. The farm machinery will stop lowering and work at the set depth (the adjustment method is shown in the adjustment on the hydraulic lift system).

2.14.2 Height Adjustment

When the tractor has a land wheel, height adjustment is used. The tilling depth of farm machinery is controlled by adjusting the height from the ground level to the plow bottom When using, the lower stopper should be adjusted to the lower limit, and the handle set on the lower position. When the farm machine is lowered to the required depth (adjustment method is shown in the adjustment on the hydraulic lift system), the farm machinery will operate at the tilling depth.

NOTE: Adjust draft control according to implement specifications.

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Operation Description

2.14.3 Lowering Speed Adjustment

Select a suitable lower speed for the farm implement to keep from being damaged by heavy impact when it contacts the ground.

Before delivery, the descending speed regulating valve was adjusted. The owner/operator can readjust the valve according to the weight of farm machinery and ground hardness.

• The farm machine will lower when the adjustment valve (A) is turned in a clockwise direction.

• When turning the regulating valve (A) counterclockwise, the lowering speed of the farm machinery will increase. (See figure 2-23)

Figure 2-24 Adjustment Valve Diagram

2.14.4 Application of the Hydraulic Output and

Lock

• Turn the adjustment valve (B) in a counterclockwise direction until the valve is closed. This will also close the adjustment valve on the inlet and outlet of the oil cylinder. The male connector on the quick change coupler is connected with the oil inlet of the farm machinery. The hydraulic output female connector (A) is connected with the male connector on the farm machinery. Push the distributor control handle to the lifting position to achieve the appropriate hydraulic output. Simple hydraulic output can only control a single-action oil tank.

• When using the hydraulic output, the farm implement should be in the lift position, if the lower speed adjustment valve (B) is closed and the oil in the tank can not return. The farm implement should be locked in the transport position and the adjustment valve can act as the hydraulic lock.

Figure 2-25 Hydraulic Output Diagram

Note: When traveling a long distance with farm machinery, they should be locked with the hydraulic valve to prevent the distributor control handle from being touched during the course of driving to avoid an accident.

27

Operation Description

2.14.5 Use of multiway valve

Optional

• Switch off the engine.

• Put the lifter in lowering position.

• Move the hydraulic output valve operation handle forward and backward, in order to eliminate the pressure in the hydraulic adapter seat.

• Take out the sealing cover of the adapter seat and clean the adapter.

• Connect the spare male connector to the female connector with the quick change coupler, and then connect the oil inlet and outlet of the double-action oil tank on the farm machine. The multi-way valve has four quick change couplers,

Figure 2-26 Multi-Way Valve (25XT) with female connections (AB1 and AB2). The control handle (C) controls the first hydraulic output (AB1) and control handle D controls the second hydraulic output (AB2).

IMPORTANT NOTES:

1 When a hydraulic output device is used, the connector seat should be covered with a seal cover to avoid dust.

2 After the hydraulic output device is used, the operating handle should be set to the neutral position, otherwise, the hydraulic system may overheat.

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Operation Description

Suspension Mechanism Application

During tilling operations, the plow is adjusted vertically and horizontally to ensure that the tilling depth is the same.

• Adjusting the horizontal in a longitudinal direction:

Adjust the upper pull bar’s (A) length to keep the plow frame horizontal in a longitudinal direction for an equal tilling depth of each plow. When the front blade is deep and rear blade is shallow or the plow heel is away from the bottom of trench, the upper pull rod should be extended. When the front blade is shallow and the rear blade is deep or the plow heel compacts the bottom of the trench, the upper pull rod should be shortened.

• Horizontal adjustment: Adjust the length of the right and left lifting rod to keep the plow frame level. When the right lifter rod (B) is extended, the tilling depth of the first plow will be deeper. When the rod (B) is shortened, the tilling depth of the first plow will be shallower. Usually, the left lifting bar (C) is not adjusted, except when the adjustment amount of the right lifting bar is not enough. The left rod is adjusted for a same tilling depth of each plow.

Figure 2-27 Suspension Mechanism

Important notes

1. When plowing, never adjust the deflective traction of the farm machinery by fixing the limit rod. This will help you avoid damaging the suspension mechanism.

2. When plowing, in order to avoid the suspension mechanism damage, the tractor should never be turned without lifting the farm machinery.

Note: The limit rod is use to prevent the lower pull rod from hitting the rear wheel of the tractor due to excessive swinging when the tractor lifts the farm machinery and turns at the end of field. When the farm machinery is in the tilling position, the limit rod is in a loose state. A certain oscillating quantity between the tractor and farm machinery is allowed

29

Operation Description

2.14.7.2 Power Take-Off (PTO) Shaft Use (with a dual-function clutch)

Power for the PTO shaft is switched on and off by a 2-stage clutch, the PTO disengagement control handle and the power output gear shift knob on the left rear of the gearbox. When the power output disengagement control handle is pushed downwards from the front position, the control lever pushes the engagement sleeve in the gearbox back. The PTO is engaged and disengaged with a reverse movement. Push the PTO gear shift handle forward for a high-speed shift and pull the handle backward for a low-speed shift. The procedure is as follows:

• Remove the traction frame and the power output cover, then install the required farm machinery.

• The power output gearshift handle is set in the required gear.

• Step on the clutch pedal to the lowest position to disengage the power output clutch. Then push the power output clutch disengagement control handle to the “engaged” position.

• Release the clutch pedal slowly. First throttle down to run at low speed and check if the operation is normal, and then start operating.

• When short-time repetitive activity in one place is needed, it is necessary to step on the clutch pedal lightly to disengage the main clutch. At this time, power for the tractor gearbox is disconnected, the tractor stays in place, however, the farm machinery in the rear is still working normally.

• When you need power output, the power output operation handle should be in the release position, and the cover for the power output shaft should be remounted.

WARNING: When transporting farm machinery over long distances, the PTO control handle should be pushed to the “disengaged” position to power off and prevent personal injury and/or the farm machinery from being damaged.

2.14.8 Electrical Equipment Usage

The electrical system for the series XT tractor is a 12V negative ground system. For components and circuit of electrical system, see Diagram 2-30

2.14.8.1 Battery

The battery is used to store the alternator energy. When the alternator does not work or runs in low speed, the stored energy can be provided to the power-using equipment and as a secondary short-term power supply for an overload.

• Series XT tractors use a maintenance-free battery.

• You should clean the dust and oil stains on the battery cover to avoid electric leakage. Check if there are any cracks and leaking electrolyte fluid. Good contact between the poles and the conducting wire is vital.

The air vent in the plastic cover should be smooth to avoid an explosion.

• Starting time shouldn’t exceed 5 seconds each time to prevent battery drain.

• If the tractor is not used for a long time, the battery should be removed and maintained.

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Operation Description

2.14.8.2 Alternator

• The alternator should be used together with the regulator.

• The alternator has a negative ground. Positive and negative poles of the alternator, regulator and battery need to be connected properly. If not, the alternator and the regulator will be damaged.

• Never check if the alternator is generating power by grounding the ignition.

• After parking the tractor, remove the ignition key to cut off the connection between the motor and battery, so that the battery will not discharge.

2.14.8.3 Starter

• The starter cannot keep on working for long amounts of time. Each starting time should not exceed 5 seconds to avoid starter damage.

• When starting the tractor, avoid engaging the key if the tractor is already running.

• During starting, if the starter keeps on running when the key resets, you need to pull the shut-down cable immediately. Troubleshoot before starting.

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Operation Description

2.15 Tractor Break-In

Before using, the tractor should run for a certain period with proper lubrication, at a certain rpm and without a full load. After the warm up period, the tractor should be checked and adjusted. This period of time is called running-in.

2.15.1 Preparations prior to break-in

• During break-in, technical maintenance per shift and per 50 hours should be made on the tractor. See

Operation Manual 4 Maintenance.

• Apply emergency brake.

• Check and tighten the bolts, nuts and screws outside the tractor.

• Fill lube grease into the grease fittings of the front wheel hub and front axle. Check the oil levels in the oil pan, drive train, hydraulics, front drive axle, central drive and final drive. If not adequate, fill them according to the specification.

• Fill the diesel fuel and coolant to specifications.

• Check the tire pressure.

• Check the electrical circuits.

• Lubricate all grease fittings.

• Put the operation handles (PTO, transmission, hydraulics) in neutral.

2.15.2 Engine break-in without a load

Perform idle running-in for 15 minutes. Start the engine according to the sequence specified in the “Diesel

Engine Operation & Maintenance Instructions”, and run the engine in a sequence at low speed first, then at mid-speed and finally at high speed (5 minutes each).

During the idle break-in, check the working conditions of engine, and the hydraulic oil pump. Observe if there is abnormal operations and sounds. Check for any water, oil or fuel leakage. Check the instrumentation. When any abnormal conditions occur, stop immediately and troubleshoot. Repeat break-in procedure.

The following break-in cannot be started until the engine is working normally.

2.15.3 Power take-off (PTO) shaft break-in without a load

The engine throttle control handle is set at the medium position, and the engine runs at medium speed. Set the

PTO shaft at low speed and high speed for 5 minutes respectively, then checked for any abnormalities. The PTO shaft should be in the neutral position after break-in.

Start the engine and run it with the throttle in the middle power position. Operate the handle of distributor and lift and lower the suspension mechanism several times. Install implement (a piece of farm machinery or similar) on the suspension mechanism, run the engine on the throttle position and operate the distribution handle to make the suspension mechanism lift up and down 20 times. Check that the hydraulic suspension mechanism can be fixed at the highest position, at the required position and check for the lifting time and leakage.

With the tractor stationary, run the engine at low and high speed, and turn the steering wheel to the left and to the right smoothly 10 times in each direction. While turning the wheel, listen for any sounds and smooth operation.

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Operation Description

2.15.5 Tractor break-in without a load and with a load

After completing the PTO shaft and hydraulic system has been broke-in, proceed with tractor break-in procedures according to Table 2-2-3 on the condition that everything on the tractor checks out. Break-in time is

10 hours in total.

Load break-in can be done after the idle running-in and only after everything checks out. The load and the speed of the load running-in should be from low to high. During the break-in, pay attention to:

• Check if the electrical equipment and the readings for various instruments is normal.

• Is the engine running normally or not?

• Check if the clutch engages smoothly, and disengaged completely.

• Does the tractor shift easily and with/without random shifting or popping out of gear?

• Are the brakes working correctly?

• Check to ensure that the differential lock engagement and disengagement are working correctly.

• Check to ensure that the engagement/release of the front axle is working correctly.

• When a fault occurs, stop the break-in process and troubleshoot.

2.15.6 Maintenance after break-in

After break-in, you will need to drain system and replace all lubrication oils and hydraulic fluids and conduct the necessary preventative maintenance according to recommended schedule, then you can put the engine into normal operation.

The maintenance of engine after break-in in is as follows:

• After parking, drain the warm lube oil in the diesel engine oil pan, change the oil filter and engine oil air separator, and fill with fresh lube oil as required.

• Drain transmission and hydraulic system and replace fluids.

• Perform technical maintenance on diesel motor according to “Maintenance Instruction of Diesel Motor”

• Drain the cooling water and clean the cooling system of the engine with water and then replace with new coolant.

• Check the toe-in and free strokes of the clutch and brake. Adjust if necessary.

• Check and tighten all bolts, nuts and screws outside.

• Fill lubrication grease to each lubrication point of the tractor according to Maintenance Chart.

IMPORTANT NOTES:

1 Tractor can not be put into service until the break-in is complete and any maintenance is performed.

Ignoring the break-in procedure can shorten the service life of the tractor.

2 The owner/operator should familiarize themselves with the tractor before performing the break-in procedures.

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Operation Description

Table 2-2 Running-in time for each stage (8F+2R shift bottom unit: h)

Tractor stopper

Idle

When loading 1 ton on a trailer, road transportation should be used.

Operating on sandy soil with a plow, working depth 14cm.

Forward Shift

Low gear 1

Low gear 2

Low gear 3

Low gear 4

Reverse Shift

H-1 H-2 H-3 H-4 R-1 R-2

0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

5 5 5 5 4

Table 2-3 Running-in time for each stage (8F+8R shift bottom unit: h)

Tractor stopper Low gear

1

Driving without load

When loading

1 ton with a trailer, road transportation should be used.

Operating on sandy soil with a plough, working depth

14cm

Low gear

2

5

Forward Shift

Low gear

3

5

Low gear

4

5

Reverse Shift

H-1 H-2 H-3 H-4 R-1 R-2 R-3 R-4 R-5 R-6 R-7 R-8

5 4

2.16 Tractor Common Faults and Troubleshooting

2.16.1 Chassis Faults and Troubleshooting

2.16.1.1

Clutch Faults and Troubleshooting

Table 2-4 Clutch Faults and Troubleshooting

Troubleshooting

Clutch slipping

(1) Oil stain on friction lining and pressure plate.

(2) Friction lining worn or burnt.

(3) Belleville spring press reduced.

(4) Free pedal travel too small, or no free travel.

(5) Clutch plate severely deformed.

(1) Wash with solvent, locate the cause and do troubleshooting.

(2) Replace the friction lining.

(3) Replace the butterfly spring.

(4) Readjust the free travel of the pedal according to the requirements.

(5) Replace the clutch plate.

The separation of clutch is not disengaging, and there is noise when it is engaged.

(1) Free pedal travel is too large, or the operation travel too small.

(2) The clutch plate is warped.

(3) Disengaging lever heads are not on the same plane.

(1) Adjust the free stroke of the pedal according to requirements.

(2) Replace the driven disk.

(3) Adjust according to the requirements.

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3. Tractor shakes when starting.

Operation Description

Troubleshooting

(1) Disengaging lever heads are not on the same plane.

(2) Oil stain on the friction lining and clutch plate.

(3) The clutch plate is severely warped.

(4) The bolt for the flywheel and the clutch is loose.

(1) Adjust according to requirements.

(2) Clean friction lining and clutch plate.

(3) Replace driven disk.

(4) Immediately stop the vehicle and troubleshoot.

2.16.1.2

Gearbox fault and troubleshooting

Table 2-5 Gearbox Faults and Troubleshooting

Fault Fault Troubleshooting

1 Putting the tractor in to gear is difficult or impossible.

(1) Clutch is not disengaged completely.

(2) Gearbox interlocking pull rod is too long.

(3) Shift lever fork is severely worn.

(4) The meshing bush end surface and gear end surface is worn or broken.

(1) Troubleshoot according to the clutch type.

(2) Shorten the gearbox interlocking pull rod.

(3) Replace the shift lever.

(4) Replace or repair.

2 Shift disengages automatically.

3 Random shift.

5. Noise or knocking sound in the gearbox.

(1) The gearbox interlocking pull rod is too short.

(2) Locating slot of the shift fork severely worn.

(3) The pressure of interlocking pin spring is inadequate.

(4) The bearing on the gear shaft is worn.

(5) Spline of tooth seat worn.

(1) Shift lever fork is worn.

(2) Gearbox guide plate is severely worn.

(3) The fork slot of the fork and meshing bush is worn.

(4) Locating pin of interlocking pin and shift fork is severely worn.

(1) The gear wear is severe, the tooth surface is peeled or the wheel tooth is broken .

(2) Bearing is worn or damaged.

(3) Lube oil is not efficient, or the quality is not in compliance with the requirements.

(1) Lengthen the gearbox interlocking pull rod.

(2) Replace the shift fork.

(3) Adjust or replace the interlocking pin spring.

(4) Replace the bearing.

(5) Replace the tooth holder.

(1) Repair or replace the shift lever.

(2) Replace the gearbox guide plate.

(3) Replace the fork and meshing bush.

(4) Replace the interlocking pin and shift fork shaft.

(1) Replace gear.

(2) Replace bearing.

(3) Fill or replace lube oil.

2.16.1.3 Rear Axle and Brake Faults and Troubleshooting

1. An increase in noise in the central drive.

2 Rear Axle and Brake Faults and Troubleshooting

(1) The bearing play of the small conical gear is too large.

(2) Gear engagement is abnormal.

(3) Bearing of conical gear pair or the actual gear is damaged.

(4) Differential gear shaft is worn or stuck.

(5) Planetary gear or gasket is worn.

(6) Differential gear broken or damaged.

Troubleshooting

(1) Adjust according to requirements.

(2) Readjust according to requirements.

(3) Replace bearing or gear.

(4) Replace the differential gear shaft.

(5) Replace the planetary gear or shims.

(6) Replace the differential bearing.

36

Operation Description

2. Small conical gear and differential bearing is hot.

( 1)The pre-tightening force is too much.

( 2)Lubrication is poor.

( 3)The backlash at gear pair side of conical gear is too small.

Troubleshooting

( 1)Readjust the bearing pre-tightening force.

( 2)Check the oil level, add if necessary.

( 3)Readjust the backlash.

3. Abnormal noises from the final drive.

(1) Bearing, gear or shaft damage. (2) Replace bearing, gear or shaft.

4. No braking control.

5 Brakes gets hot.

6. The tractor pulls in one direction when braking.

(1) Free stroke of the brake pedal is too large.

(2) Friction lining is worn severely or unevenly.

(3) The free stroke of the pedal is too large.

(1) Brake friction disk does not return.

(2) Friction plate and brake hub don’t disengage completely.

(1) The travel of the left and right brake pedals are not consistant.

(2) Brake friction lining on one side is damaged.

(3) Pressure in two rear tires is uneven.

(1) Readjust the free stroke of the pedal.

(2) Replace the friction lining.

(3) Adjust the free stroke of pedal according to requirements.

(1) Replace the return spring.

(2) Adjust according to the requirements.

(1) Adjust.

(2) Replace friction lining.

(3) Check and fill tires with air according to requirement.

2.16.1.4

Four-Wheel Drive System Faults and Troubleshooting

2-7 Four –Wheel Drive System Faults and Troubleshooting

Sequence

No.

1.

2

3

Front wheel tire has excessive wear.

Front wheel shakes.

Loud noise

(four-wheel drive tractors).

(1) Front wheel rim or the spoke is severely deformed.

(2) Toe-in of the front wheel is abnormal.

(3) Steering knuckle and two pin shafts of the oil tank are worn.

(4) Tire pressure is not adequate.

(5) Front axle does not release before transportation.

(6) Drive tire thread mounted backwards.

(1) Calibrate front wheel rim or spoke.

(2) Adjust the toe-in.

(3) Replace axis pin.

(4) Fill tire with air according to requirement.

(5) Disconnect the front drive axle.

(6) Refit the wheel according to the requirements.

(1) Set nuts or bolts for the ball pin, oil cylinder and the steering arm are loose.

(2) Toe-in of the front wheel is abnormal.

(3) Bearing gap too large or severely worn.

(4) Knuckle pin is severely worn.

(5) Front wheel rim is deformed.

(1) Engagement trace of the front central drive gear is abnormal.

(2) Clearance between the central drive bearing is too large or destroyed.

(3) Differential axle is worn or damaged.

(4) Planetary gear or gasket is worn.

(5) Final meshing of planeatry gear pair is faulty.

(1) Check and tighten.

(2) Adjust the toe-in. bearing.

(4) Replace the knuckle pin.

(5) Replace the front wheel rim.

(1) Readjust the meshing lash.

(2) Adjust or replace.

(3) Replace the differential gear shaft.

(4) Replace the planetary gear or shims.

(5) Replace the planetary drive gear.

37

Operation Description

4

5

Drive shaft and sleeve become hot

(4-wheel drive tractor).

Auxiliary box noise (4-wheel drive tractor).

(1) The drive shaft is severely bent or deformed creating friction.

(2) Speed gear is too high.

(3) Bearing or gear is severely worn.

2.16.1.5 Hydraulic Steering System Faults and Troubleshooting

(1) Replace the drive shaft

(2) Put into low gear.

(3) Replace

Table 2-8 Hydraulic System Faults and Troubleshooting

Sequence

No.

1

2

3

4.

5.

Oil leakage.

Heavy steering.

Steering column failure.

Hydraulic steering without power.

Steering is hard to turn.

Troubleshooting

(1) Rubber o-rings or bolts at various pipe joints are damaged or loose.

(2) Hydraulic steering gear valve body, stator and rear cover rubber o-rings are damaged.

(3) Rubber o-ring at the axle journal is damaged.

(4) Leaks in hub subassembly

(1) Not enough oil delivery to the gear oil pump. The gear oil pump leaks inside or the oil screen inside the steering oil tank is blocked (light at low speed and heavy at high speed).

(2) Erratic steering cylinder movement when the steering wheel is rotated.

(3) The oil level in the steering oil cylinder is insufficient.

(4) Spring tension in the relief valve becomes weak, or the steel ball is not sealed, light load is steering lightly, and steering becomes heavier if load is increased.

(5) Oil viscosity is too high.

(6) Steel ball check valve in the valve body fails; the steering wheel is heavy when turning it slowly or weak when turning sharply.

(7) Oil leakage from steering system, both inside and outside.

(1) Replace the rubber ring or tighten the bolt.

(2) Replace the rubber ring. o-rings.

(4) Tighten the bolts. pump. Clean the filter screen.

(2) Discharge the air in the system and check if air exists in the oil suction pipe.

(3) Fill oil to specified height, clean the relief valve and adjust the spring pressure in the valve.

(4) Replace parts and components.

(5) Drain oil and replace with specified oil

(6) Replace valve.

(7) Troubleshoot the point of the oil leakage and repair or replce.

(1) Linkage shaft opening is broken or deformed.

(2) Rotor and linkage shafts are improperly mounted.

(3) Steering oil cylinder piston or piston seal ring is damaged.

(1) Clearance between the rotor and stator is too big on pump.

(2) Driver does not feel endpoint strongly when steering with the oil cylinder piston in the extreme position; when manual steering, the steering wheel rotates and oil cylinder does not move.

(1) The gap between valve inside and the valve sleeve is too large.

(2) The gap between interlocking shaft and fork pin is too large.

(3) The gap between the interlocking shaft and the rotor is too large.

(4) The return spring plate is broken or too soft. axle.

(2) Refit.

(3) Replace

(1) Replace pump.

(2) Replace

(1) Replace.

(2) Replace.

(3) Replace.

(4) Replace.

38

Operation Description

2.16.1.6 Hydraulic Suspension System Faults and Troubleshooting

Sequence

No.

Table 2-9 Hydraulic Suspension System Faults and Troubleshooting

Troubleshooting

(1) Oil level inside the lifter is low.

(2) The strainer of the oil filter is blocked.

(3) Air getting in the suction pipe.

(4) Gear oil pump failure.

(1) Add oil to the specified oil level

(2) Clean or replace the strainer of oil filter

(3) Check for leaks

(4) Replace gear oil pump

1

2

3

4

5

Cannot lift the load.

Lift should be in light load or is slow in heavy load.

Farm machine shakes or lifts slowly.

Implement slowly drops after being lifted and after turning off the engine. outside/inside end of the operation handle dropped.

(6) The swing rod inside the distributor dropped.

(7) The main control valve seized at the middle or lowering position, or the oil return valve seized in the open position.

(8) Main control valve seized.

(9) Lowering valve seized.

(10) Pin shortened, or lowering valve assembly loose, making it unable to open the lowering valve.

(11) Oilway from the cylinder end to the oil cylinder is closed.

(1) The oil suction line sucks air or air enters the line.

(2) The adjustment pressure for the system safety valve is too low.

(3) The adjustment pressure for oil cylinder safety valve is too low.

(4) Gear oil pump is worn or pressure is inadequate.

(5) Oil cylinder seal ring is leaking.

(6) Open distributor, and fit swing rod

(7) Dismantle distributor, and clean valves

(8) Clean main control valve

(9) Clean lowering valve

(10) Remove plug for lowering valve, readjust the gap of lowering valve push pin or tighten lowering valve assembly

(11) Open the oil way

(1) Check the oil suction line and oil filter.

(2) Replace the system safety valve.

(3) Replace oil cylinder safety valve.

(4) Replace the gear oil pump.

(5) Replace the oil cylinder seal ring.

(1) Oil filter blocked.

(2) Air getting into the suction pipe.

(3) Gear oil pump failure.

(4) Hydraulic oil level is too low.

(1) The tightness of the check valve of the distributor is poor.

(2) The lowering valve is loose.

(3) The oil cylinder safety valve is leaking or improperly adjusted.

(4) O-ring for the oil cylinder is damaged or leaking.

(1) Replace the filter element.

(2) Replace the O-seal ring.

(3) Replace the gear oil pump.

(4) Add lube oil according to the requirements.

(1) Clean the check valve.

(2) Clean the lowering valve.

(3) Readjust the oil cylinder safety valve.

(4) Replace the O-ring.

(5) Replace the seal ring.

When the handle is in distributor or the cylinder end and the lifter case is improperly installed, peeled or damaged.

(1) Because of improper adjustment, the inner lifting arm props against

(1) First measure the lifting height of implement, then readjust. Shorten

39

Operation Description

Sequence

No.

Troubleshooting lift position the distributor emits a loud noise. the lifter case to open the safety valve. the force/position adjusting rod to make the lift height lower that the original position.

6

Hydraulic lifter has no hydraulic output or weak output.

(1) The oil inlet pipe of the oil cylinder is cut off.

(2) Front cone and conical hole of speed lowering control valve have not been sealed tightly.

(3) Lifter is in the neutral lifting position.

(1) Fasten the control handle to lower the speed.

(2) Replace the valve.

(3) Push the lifter control handle to the lowering position to lower the outer lifting arm to the lowest position. Shut off the inlet oil line to the oil tank, then put the operation handle in the lift position.

2 .16.2 Electrical System Fault and Troubleshooting

2.16.2.1

Starter Faults and Troubleshooting

Table 2-11 Starter Faults and Troubleshooting

Sequence

No,

Reasons Troubleshooting

1. doesn’t work.

(1) Battery capacity is insufficient.

(2) Battery pole is dirty or the cable is

(1) Charge the battery according to the specifications. loose. connecting parts.

(4) The wires in control circuits such as (3) Tighten connectors. the start switch are broken.

(5) No contact between the carbon brush.

(6) Circuit broken or a short in the starter.

(4) Check circuit and connection.

(5) Replace starter.

(6) Replace starter.

(1) Battery capacity is insufficient.

(2) Poor wire connections.

(1) Charge the battery.

(2) Tighten the wire connections.

3 contaminated by oil. oil stains.

(4) The carbon brush is worn or the spring (4) Replace pressure is insufficient.

(5) Bad contact with rectifier. (5) Replace.

(6) Main contact of the solenoid switch is (6) Replace. burned, resulting in a poor connection.

(7) Bearing severely worn. Armature rubs

(7) Replace against the case.

(1) Circuit breaker copper contact disc and (1) Replaces tarter stuck. (3) Replace starter

After the engine

(2) Starter lever disengaged or loose bolts.

has been started,

(3) Lever return spring is broken or loose.

(4) Replace starter

(5) Replace starter run, but emits a sharp noise. or bent.

(5) Tooth surface snapped or locked.

(7) Replace igniting switch.

(6) Contact(s) of the starting relay are stuck.

(6) Replace starting relay. automatically after starting.

40

Operation Description

2.16.2.2 Alternator Faults and Troubleshooting

Table 2-12 Motor Faults and Troubleshooting

Sequence

No.

Troubleshooting

1

The alternator doesn’t work.

(1) Wiring is wrong, broken or not making good contact.

(2) Rotor circuit broken.

(3) Rectified diode damaged.

(4) Carbon brush is not making proper contact.

(5) Regulator is damaged.

(1) Check & repair the circuits.

(2) Replace alternator.

(3) Replace alternator.

(4) Replace alternator.

(5) Replace alternator.

2

3

The alternator is not charging properly.

(1) The drive V-belt is loose.

(2) Bad contact with the carbon brush and the slide ring contaminated by oil.

(3) The regulator is damaged.

(4) Not enough electrolytes in the battery or it is sulfurized or too old.

The alternator is

(1) Regulating voltage for the regulator is too high. overcharged.

2.16.2. 3 Battery Faults and Troubleshooting

(1) Adjust the tension of the drive

V-belt

(2) Replace alternator.

(3) Replace alternator.

(4) Replace battery.

(1) Replace the voltage regulator.

Sequence

No.

1

2

Battery capacity is low and the engine is difficult to start.

Excessive battery discharging.

Table 2-13 Battery Faults and Troubleshooting

Troubleshooting

(1)The electrolyte level is too low.

(2) Short circuit between electrode plates.

(3) Sulphurization of the electrode plate.

(4) Poor circuit connector contact, or oxide on pole is too much.

(1) Replace battery.

(2) Replace battery.

(3) Replace battery.

(4) Connect, fasten, deoxidize and coat a layer of Vaseline on the pole head.

(1) Impurities in the electrolytes.

(2) Short circuit in the exterior wiring of the battery.

(1) Replace battery.

(2) Troubleshoot and repair.

(3) Replace battery.

(4) Replace battery.

(3) Electrolyte overflows from battery surface, short circuit positive/negative poles. placement of metal tool or bar between positive/negative poles.

(5) Active substance on pole breaks off. The pole short circuit caused by deposits or by isolation plate damaged; positive/negative pole is short circuited by pole wrap.

41

Operation Description

2.16.2.4

Instrument Faults and Troubleshooting

Table 2-14 Instrument Faults and Troubleshooting

Sequence

No.

Fault Fault Troubleshooting

1

2

The water temperature gauge always indicates a low temperature.

The water temperature gauge always indicates a high temperature.

(1) Circuit opened and contact at (1) Check & repair the circuits. plug-in is poor.

(2) Water temperature sensor damage.

Remove dirt at plug-in.

(3) Water temperature meter ineffective. sensor. meter.

(1) Water temperature sensor short Replace water temperature circuit or damage.

(2) Short circuit.

(3) Water temperature meter ineffective. sensor.

(5) Check and repair or remove shorted circuit faults.

3

Oil gauge indication abnormal.

(1) Circuit opened or shorted

(2) Oil volume sensor circuit broken, short or not in good contact

(3) Oil pressure meter ineffective.

2.16.2.5

Light Faults and Troubleshooting meter.

(1) Check and repair, then troubleshoot.

(2) Repair or replace sensor.

(3) Replace oil pressure meter.

Sequence

No.

1

2

Head lamp has no high beam or dimmed light.

Rear light not lit.

Table 2-15 Light Faults and Troubleshooting

Troubleshooting

(1) Circuit broken, short circuit fuse blowout.

(2) Bad contact or damage to the dimmer switch

(3) Filament broken.

(1) Check and repair, then connect.

(2) Check and repair. Replace if necessary.

(3) Replace bulb.

(1) Circuit open.

(2) Poor contact or damage to the rear light switch.

(1) Check and repair, then connect.

(2) Check and repair. Replace if necessary.

42

Operation Description

3. Accessories, Spare Parts and Consumables

3.1 Accessories

3.1.1

Safety Frame (optional)

The XT series tractor can be equipped with an OSHA safety frame to prevent the driver from being hurt by an accidental turnover.

3.1.2

Swing Traction Rod (optional)

The swing traction rod is used for traction type farm machinery. The traction rod rear end connects with the farm machinery by a traction pin.

The traction rod can swing right or left, making it more convenient for mounting farm machinery. When the tractor is towing farm machinery backward, however, the positioning pin (1) must be inserted into the hole of the traction plate, in order to stabilize the traction rod (2) (Figure 3-1).

The traction point can be changed to a suitable height by turning the traction rod, in order to connect the matched farm machinery .

3.2 List of consumables (not included with tractor purchase)

Figure 3-1 Swing Traction Application

1. Positioning Pin 2. Traction Rod

Consumables for the Nortrac XT series wheeled tractor include: all bearings listed in appendix 10-2, all oil seals and sealing rings listed in appendix 10-3, all fuses listed in table 3-2,and the components listed in following table:

Table 3-4 List of consumables, such as bulbs and glass products, etc

Sequence

No.

1 12V-1141-28W Rear lamp bulb 1

2 pieces applied to 3rd generation model

2

3

12V-1141-21W

12V-89-5W

Front/rear steering lamp bulbs

Positioning lamp bulb

Double-filament bulb for high beam and dipped headlight

4

2

1

5 12V-1141-21W bulb 2

6

7

TE324.20A-01

FT220.40.301

O-ring for wire-roller

Steering rod seal boot

8 TE250.362D-01

9

10

11

12

FT250.47C.230

TE250.475B-01

YFKM385T10500

YFKM385T09300

Machine cover seal

Rubber sealing strip

Fuel Filter Element

Oil filter Element

1

1

1

1

1

1

Used for the type with

1 shuttle shifter

43

Maintenance Instruction

4.1 Technical Maintenance Regulation

Carrying out the technical maintenance specifications of the tractor is the effective way to prolong the service life of the tractor and reduce accidents.

The technical maintenance schedule for XT series tractors is based on the accumulated work hours, which includes maintenance for: every shift, every 10 work hours, every 50 work hours, every 250 work hours, every 500 work hours,every 1000 work hours, every 1600 work hours, winter and long-term storage.

Important notes:

1. All maintenance work should be carried out by the owner/operator or a trained service professional, who is familiar with the tractor.

2. In order to keep the tractor Running-In a normal operation and prolong its service life, the technical maintenance regulations should be strictly observed.

3. The tractor warranty can be voided at any time should damage happen as the result of any operator who is unfamiliar with the tractor or when specified maintenance procedures are not performed according to manufacturer specified timelines.

4. Opening the engine and hydraulic system safety valve, the relief valve, and the voltage regulator are prohibited, without prior manufacturer authorization. Making adjustments to these sensitive areas may cause damage to the tractor, and invalidate the warranty.

4.1.1 Maintenance for every shift

(1) Remove the dust, oil and dirt on the tractor, and clean air separator under dusty working conditions.

(2) Check the tightness of each fastener outside of the tractor and tight them if necessary, especially the front/rear wheel nut.

(3) Check the oil level of the engine oil pan, radiator, fuel tank, hydraulic steering oil tank, and hydraulic lifter; when checking the oil level of engine oil pan, the tractor should be parked for at least 30 minutes on a level plane.

(4) Grease according to table 1 technical maintenance.

(5) Check if the engine has any air/oil/water leakage. If any, eliminate the leakage.

(6) Check front/rear tire pressure, and adjust as required.

(7) Check and adjust the free travel of the clutch and the driving brake pedal.

(8) Maintain the diesel engine according to the requirement of daily- maintenance described in the engine manual.

44

Maintenance Instruction

4.1.2

Maintenance for every 50 hours

(1) Perform all of the technical maintenance after every working shift.

(2) Check the tightness of the fan belt (press down the belt with your hand and measure the sag (15–20mm), and make adjustments if necessary.

(3) Spread the grease lubricant on the electrode contact of the storage battery to prevent corrosion.

(4) Maintain the diesel engine according to the requirement of level 1 technical maintenance described in the engine manual.

4.1.3

Maintenance for every 200 hours

(1) Perform all technical maintenance required for every 50 work hours.

(2) Fill lubricating grease according to Maintenance Table 4-1.

(3) Replace lube oil in the diesel engine oil pan and clean the oil pan and filter screen.

(4) Replace the engine oil filter element and replace engine oil.

(5) Replace the air filter element.

(6) Maintain the diesel engine according to the requirements of level 2 technical maintenance specified in the engine manual.

4.1.4

Maintenance for every 400 hours

(1)

Perform all technical maintenance after 1-hour running.

(2)

Check the oil level of the transmission case and add if necessary.

(3)

Check the oil level of the front drive axle and add if necessary.

(4)

Check and adjust the tightness of the toe-in on the front wheel and the front wheel bearing and conduct adjustment as necessary. Replace the lubricating oil in the front wheel hub.

(5)

Check the free running angle of the front ires and conduct adjustment if necessary.

(6)

Clean and maintain the hydraulic system filter.

(7)

Maintain the diesel according to the requirement of level 3 technical maintenance described in the engine manual.

4.1.5

Maintenance for every 800 hours

(1)

Perform all technical maintenance after 1-hour running.

(2)

Change the hydraulic system oil.

(3)

Flush cooling system and radiator. Replace fluids.

(4)

Clean the transmission case and change the lubrication oil when the tractor is warm.

(5) Clean the oil suction filter screen of the hydraulic system, check the cleanliness of the oil, rinse the internal cavity of the lift housing with solvent and drain, if necessary, and change the engine oil.

(6) Check and adjust the valve clearance of the engine.

45

Maintenance Instruction

(7) Rinse the fuel tank and the filter in the fuel tank with solvent.

(8) Maintain the diesel engine according to the requirement of level 4 technical maintenance described in the engine manual,

4.1.6

Maintenance

(1) Perform all technical maintenance after 1-hour running.

(2) Check engine to manufactures specifications.

(3) Change the lube oil in the front drive axle central drive and the final drive.

(4) Check for bearing noise in clutch and front-end.

(5) Check if the gap of the central drive gears and the contact footprint are normal; check the gap of the bearings and the pre-tightening. Adjust if necessary.

(6) After maintenance, assembly and a short running-in time, check and adjust each mechanism.

4.1.7

Special maintenance in winter

When the air temperature is below freezing, along with completing “the technical maintenance per shift”, the following regulations shall be strictly abided by:

( 1) Replace the lube oil and the fuel used for winter.

( 2) Check strength of coolant, if necessary add anti-freeze to the coolant system as required.

( 3) Before every shift, the engine should be started according to winter requirements.

(4)

It is recommended when the tractor is not in operation to park it in a shed that is warm and protected from the elements.

4.1.8 Maintenance of the long-term stored tractors

If the tractor has been stored for less than one month, and the time does not exceed 100 hours since the engine oil was replaced, special technical maintenance is not required. If the tractor has been stored for more than one month, special technical maintenance should be performed according to Section 5-

Storage specified in this manual.

46

Maintenance Instruction

Table 4-1 Maintenance Table of XT Series Tractors

No. Maintenance Operation

1 Engine oil pan

2 Oil filter

3 Hydraulic pump

4 Battery

5 Radiator

6 Injection pump

7 Rear wheel hub

8 Clutch

9 Brake

10 Fan belt

11 Steering cylinder

12 King pin

Check the oil level

Check the oil filter

Check the oil level

Check the conectors

Check the coolant level

Check the oil level

Inject the grease lubricant

(2 pumps only)

Adjust the free travel

Check function

Check the tightness

Inject the grease lubricant

Inject the grease lubricant

13 Four-wheel drive front axle Inject the grease lubricant pendulum shaft

14 Front wheel central balance pin Inject the grease lubricant bushing

15 Fuel filter

Engine oil filter

17 Hydraulic oil filter

18 Injection pump

19 Engine pan

Replace the filter element

Replace the filter

Clean or replace the filter

Change the lubricating oil

20

21

23

24

Transmission case and raiser

Front wheel

Clutch pedal hub

Brake pedal hub

Front drive axle oil

Check the oil level height

Inject the grease lubricant

Inject the grease lubricant

Inject the grease lubricant

Check the oil level height

Fill up the grease lubricant

Cleaning maintenance and

27 Inlet valve and exhaust valve of the engine

Adjust the valve clearance

28 Transmission case and hydraulics Replace the lubricating

29 Cooling system of the engine oil

Cleaning maintenance and

30 Engine cooling system adopting Change the anti-freeze anti-freeze fluid fluid of Points

1

1

1

1

1

1

1

2

1

1

2

2

1

1

1

1

1

1

2

2

1

2

1

2

1

4

2

1

1

Per shift

Per shift

Per shift

Per shift

Per shift

Per shift

Per shift

Per shift

Per 50 hours

Per 50 hours

Per 50 hours

Per 50 hours

Per 50 hours

Per 200 hours

Per 200 hours

Per 200 hours

Per 200 hours

Per 200 hours

Per 200 hours

Per 400 hours

Per 400 hours

Per 400 hours

Per 400 hours

Per 400 hours

Per 800 hours

Per 800 hours

Per 800 hours

Per 1600 hours

Per 1600 hours

47

Maintenance Instruction

No. Maintenance Content of Points

31 Front drive axle central drive Replace the lubricating oil

1

32 Front drive axle final drive Replace the lubricating oil

1

4.2 Clutch Pedal Adjustment

Per 1600 hours

Per 1600 hours

4.2.1 Clutch Adjustment

The adjustment method of the clutch pedal working stroke is as flollows:

Loosen the nut (1) (as shown in Frgure 4.2, unmarked dimension unit: mm), turn the stop screw (2) to make the working stoke below the clutch rocker arm (3) 23-26mm and then lock the nut (1).

1. Lock nut 2. Stop screw

3. Release rocker arm

4. Pull rod front fork

5. Screw nut 6. Clutch pedal

7. Locknut 8. Interlock pull rod

Figure 4-2 Schematic drawing of the operating system of the clutch

48

Maintenance Instruction

4.2.2 Adjustment of the clutch (double action)

In order to ensure the normal operation of the clutch, the clearance between the master clutch disengaging lever

4 's working surface and the release bearing 5's end face must be kept within 2 to 2.5mm; that between the end faces of the slave clutch disengaging lever in 25-to-28 horse power model and the release bearing 5 must be kept within

B=(10~10.5)mm (B=(10.5~11)mm for 30-to-32 horse power model). Since the clutch friction plate constantly abrades during its operation, the aforementioned clearance will gradually diminish and even disappear. therefore, a regular inspection and adjustment must be applied.

( 1) The adjustment method of the clutch pedal free stroke is as follows:

First loosen the locknut (3) on the adjusting nut (2)

(as seen in Figure 4-3), then turn the adjusting nut (2) for the adjustment, making the distance between the working face of the three main clutch release lever (4) and the working face of the clutch pressure plate (1)

A=86.5+0.2mm for 25-28hp models; A=101.5+0.2mm for

30-32hp models; and finally lock the locknut (3). Loosen the nut (7 and 8), turn the adjusting nut (8) to make the

Figure 4-3 Double-action clutch

1. Clutch pressure plate 2. Set screw

3. Lock nut distance between the working face of the auxiliary clutch release lever (6) and the working face of the clutch pressure plate (1) C=78.5+0.2mm for 25-28hp models;

C=93+0.2mm for 30-32hp models; and screw down the nut

(8). Adjust the clutch push rod control fork 4 (as seen in

4. Main clutch release lever 5. Release bearing

6.Auxiliary clutch release lever 7/8. Nut

Figure 4-2) to guaratee the free stroke of the clutch pedal is

(25-30)mm and lock the screw nut (5) after the adjustment

(see Figure 4-2).

(2) The adjustment method of the clutch pedal working storke is as follows:

Loosen the screw nut (1) (as shown in Figure 4-2), turn the stop screw (2) to make the working stroke below the clutch rocker arm (3) 35–37mm and then lock the screw nut (1).

49

Maintenance Instruction

IMPORTANT NOTES:

1.Adjusting the clutch requires technical skills and specific tools. If uncomfortable completing this task call

Nortrac Technical Support.

2. In order to keep the friction plate from the oil, keep drain hole clear of any blockage below the flywheel casing. If serious leakage is found, repair immediately. Use solvent to clean the friction plate if necessary.

3. In order to avoid friction plate abrasion, the clutch should be maintained and adjusted frequently; don’t release and engage the clutch randomly; when releasing the clutch, step on the clutch pedal rapidly to set the limit. Never run the tractor when the clutch is semi-engaged as this will damage the clutch.

4. Never use the tractor when the clutch is not adjusted properly. This will speed up abrasion of the clutch friction plate and possibly burn the friction plate.

5. When installing the clutch, fill with lithium base grease in the internal cavity of the release bearing support

(6). When dismantling the clutch, replace the release bearing (5) (Figure 4-3). Replace through-out bearing.

4.3 Brake Adjustment

4.3.1

If one the following should occur, the brake should be adjusted:

• The free stroke of the brake pedal is too large, which can cause a braking failure.

• The free stroke of the brake pedal is too small, which can cause too little clearance between the friction plate and the brake hub and semi-braking state.

• Inconsistant braking force in left and right, which causes the tractor to pull.

4.3.2

Brake Adjustment Method:

• Adjustment on the brake pedal free path Loosen the lock nut (3) in the brake rod and turn the brake rod control fork (2) to change the length of the brake rod. Adjust the free stroke of the brake pedal

(displacement of the brake pedal between the highest position and the position where the clearance between the brake hub (5) and friction plate (4) disappears) within 20–30mm. Make the length of brake rod (6) consistent. Then fasten the lock nut (3).

• Adjustment to equalize left and right braking (deviation) In case of inconsistant adjustment of the left and right brake and hard braking of the tractor during high-speed driving, the impression length of the left and right tires will become irregular, i.e. “deviation”. Adjust the shorter brake rod by the side, shortening the impression length, or the longer brake rod by the side, lengthening the impression length, until the impression length of left and right tire are consistant, and braking is reliable. Then fasten the nut (3).

Figure 4-4 Brake System

1. Brake arm 2. Control fork 3. Lock nut 4. Friction plate

5. Brake hub 6. Brake rod 7. Brake pedal 8. Lock plate components

Warning:

Adjust the free strokes so that the left and right brake pedals are consistant, or the tractor will turn to one side during hard braking, which can cause an accident.

50

Maintenance Instruction

4.4 Differential Lock Adjustment

Adjustment of differential lock is performed through adjustment of the bolts (1 and 2). During the adjustment, the clearance between the right coupling (3) and left coupling (4) is about 2mm. Loosen the nut (2) and rotate the bolt (1) in, and the clearance increases. Rotate the bolt (1) out, and the clearance is reduced. After adjustment, fasten the nut (2).

F

Figure 4-7 Differential Lock Adjustment

1. Adjustment bolt 2. Lock nut 3. Right coupling 4. Left coupling

51

Maintenance Instructions

4.5 Steering System Adjustment

4.5.1 Full Hydraulic Steering System Cautions

The XT series four-wheel drive tractor uses a

full hydraulic steering system, as shown in the figure.

Before leaving the factory, the steering system of the tractor is adjusted. Pay attention to the followings during use:

• Check the threaded connections frequently and tighten them if there is any looseness. There should not be any leakage at the connection when the

full hydraulic steering system is working.

• If any steering difficulty is found or there is a steering failure during operation, inspect for the cause first. Do not turn the steering wheel too hard or dismantle the steering gear to prevent the parts from being damaged.

Never have two people turn the steering wheel together.

• While installing the

full hydraulic steering system, the steering gear should be coaxial to the steering shaft and there should be some clearance between the axial directions. Check the steering wheel for flexible resetting after the installation.

• Ensure that the oil is clean. Check the condition of the core and oil of the filter frequently. Checking method: dribble a drop of oil onto the a paper towel, and change the oil if there is a black spot in the center of the oil mark.

• The diverter valve is a precise part which should not be removed except in a clean environment. It should be cleaned with clean solvent.

• Before leaving the factory, the pressure of the diverter valve is adjusted. Do not dismantle or adjust it by yourself. Replace if bad.

Figure 4-9

Full Hydraulic Steering System

1. Steering assembly 2. Steering cylinder column assembly 3. Hydraulic steering gear assembly 4.

Overflow pipe assembly of the diverter assembly 5. Fuel intake pipe of the steering gear

6. Single way stable diverter valve 7. Hose assembly of the oil cylinder

8. Left transitional pipe of the oil cylinder 9. Right transitional pipe of the oil cylinder

10. Drag link and steering oil cylinder assembly 11. Diverter valve bracket

12. Right duct assembly of the oil cylinder 13. Left duct assembly of the oil cylinder

52

Maintenance Instruction

4.6 Front Drive Axle Adjustment

4.6.1 Front Drive Axle Side Drive Adjustment

Adjustment of the mesh mark and meshing-teeth side clearance of the initiative gear and passive gear of the first level intermediate drive of side drive of the front drive axle can be realized by adjusting the adjusting shim (1).

Adjustmet of the mesh mark and the meshing-teeth side clearance of the initiative gear and passive gear of the second level end drive can be accomplished by adjusting the adjusting shim (5). Clearance of the two meshing-teeth side clearances should be 0.25–0.45mm.

1

Figure 4-16 Front Drive Axle Side Drive Adjustment

. Adjusting shim 2. Driving gear of intermediate drive 3. Driven gear of intermediate drive 4. Final driven gear 5. Adjusting shim

4.6.2 Track Front of the Four-Wheel Drive Model

The track of front drive axle can be: 1073mm, 1193mm and 1257mm.

53

Maintenance Instruction

4.7 Hydraulic Lifting Mechanism Adjustment

Position the farm implement lifting handle in the neutral position, as shown in the figure, and then adjust the distance between the block on the push rod and the bumper pin fixed on the lifting shaft. The lifting position of the farm implement can then be controlled.

4.7.1 Highest Lifting Position

neutral

Adjustment of Farm Implements

lifting

During the adjustment, turn the external lifting arm (2) outwards first to adjust the distance between the lower end of the internal lifting arm (3) and the limiting pin (4) of the cover of back end of the riser to be 5mm

(insert a block of about 5mm thick at the air plug (5). Adjust the distance between the lifting bstop (6) and bumper pin (7) to be 9–

10mm, and fix the block (6) on the return rod

(8) with the bolt, and lock the nut with the bolt.

Figure 4-17 Adjustment of Lifting Position

1. Handle 2. External lifting arm 3. Internal lifting arm

4. Limiting pin 5. Air plug 6. Lifting stop 7. Bumper pin

8. Push rod 9. Lowering stop

10. Hydraulic output plug screw 11. Adjusting valve

4.7.2 Lowest Position Adjustment of Farm Implements

During the adjustment, turn the external lifting arm (2) downwards to the lowest position (at this time, the piston in the oil cylinder is pushed nearly to the lowest point).

Adjust the distance between the lowering stop

(5) on the return push rod (3) and bumper pin

(4) to be 9–10mm, and then fix the stop (4) on the push rod with the bolt and nut. lifting neutral

Figure 4-18 Lowering Position Adjustment

1. Handle 2. External lifting arm 3. Push rod 4.

Bumper pin 5. Lowering stop

54

Maintenance Instruction

4.8 Battery Maintenance

4.8.1 Maintenance of Maintenance-free Battery

• State Inspection of the Battery.

Normally the maintenance-free battery does not require any special maintenance. You can observe the power levels from the view hole of the liquid densimeter: Green=full power; Grey=lack of power; Dark=no power.

• The battery should be charged when the inspection hole becomes grey. It should be replaced when the inspection hole becomes dark.

• Battery Maintenance

The battery should be stored in a clean, dry and well-ventilated area, the temperature range between 32–104 °F. The battery should be handled with care and stored right side up.

The battery terminal should be securely fixed to the power socket.

Petroleum jelly should be used on the terminals to avoid fusion with the connectors and corrosion.

1

Figure 4-2

1. Hydrometer

Inspection Vent

Keep the battery outer terminals clean.

Check the alternator output voltage regularly. The voltage should be (14.2±0.25)V.

CAUTIONS:

1. When charging the battery, keep it in a ventilated area and far from open flames. Do not spill electrolytes on your clothing or your skin. This can cause serious injury.

2. Over charging can create over-heating of the battery. In order to avoid a potentially dangerous situation, the charging current should be reduced by half or charging should be stopped to lower the temperature.

When the temperature is safe, charging can begin again.

When charging is over, shut off the power in order to avoid a fire or explosion.

55

Maintenance Instruction

4.9 Dry Air Cleaner Maintenance

4.9.1

Dry Air Cleaner Instructions

• The main filter needs to be maintained every 50 to 100 hours in normal environments.

• In dusty environments, keep up the maintenance on the filter elements per 8 hours or per each work sequence.

• When the main filter element can not be cleaned or is worn out, it should change out with a new filter element.

4.9.2

Dry Air Cleaner Maintenance Method

• Remove the filter element, clean the air cleaner with a brush and discard the dust in the rubber filter bag

• Rotate the filter element and blow the dust off from the inside of the filter element to the outside with less than 70 PSI of compressed air.

• Reinstall the filter element.

IMPORTANT NOTES:

The correct use and maintenance of the air cleaner directly relates to the service life of the engine, so it must be kept clean.

4.10 Fan Belt Tightening Adjustment

Press down on the middle part of the fan belt with your thumb and an applied force of 29.4–49.0N and a pushing distance is 15±3mm. If the belt does not conformed, adjustment is required, with the method shown as follows:

Release the fixing nut on the alternator adjusting bracket, rotate the alternator away from engine to achieve proper tension, make the adhesive tape tense and then screw down the fixing nut on the alternator bracket.

Figure 4-21 Fan Belt Tightening Adjustment

56

Maintenance Instruction

4.11 Engine Oil Sump Level Check and Oil Replacement

( 1)Remove the oil dipstick (A) on the left front of the oil pan and check if the oil level is between the upper scale mark and lower scale mark. If the oil level doesn’t reach the lower scale mark, add oil to the recommended level.

( 2)Before maintenance and replacement of the oil, preheat the engine. When the engine oil temperature reaches 50℃~60℃, unscrew the drain plug (A) below the oil pan, discharge all of the dirty oil, and refill with new oil.

Figure 4-22 Engine Oil Quantity Check

Figure 4-23 Changing the Oil in the Engine Oil

Pan

IMPORTANT NOTE: Never mix new and old engine oil or blend different brands of oil, as this can damage the engine. Replace the engine oil strictly in accordance with time limits recommended in the Operation

Instruction of the Diesel Engine.

4.12 Fuel Filter Maintenance

The fuel filter is in the front upper area on the left side of the engine. Cleaning the paper filter element of the cleaner is not allowed. The filter element should be replaced when the engine works for 200 hours. The detailed maintenance process is implemented according to the regulations of the shop instructions.

Figure 4-24 Fuel Filter Maintenance

57

Maintenance Instruction

4.13 Engine Oil Filter Maintenance

The engine oil filter (A) is located in the middle lower part on the left side of the engine. The oil filter should be replaced according to the recommended maintenance schedule.

4.14 Lifter Hydraulic Oil Filter Maintenance

The lifter hydraulic oil filter (A) is located inside the left upper part of the raiser shell (below the driver seat). The cleaning method is as follows: Loosen the 3

M8 bolts. Take out the reticulated filter element, clean with solvent and let air dry. When it becomes hard to clean the filter element or the filter element is damaged, it should be replaced.

Figure 4-25 Engine Oil Filter Maintenance

4.15 Front Drive Oil Level Check

When checking the front drive oil level, the assembly parts (A) measuring the oil dipstick should be unscrewed and the oil level should fall within the scale range of the dipstick, otherwise engine oil needs to be added. When replacing the engine oil, unscrew the main drive drain plug and the final drive drain plugs on the left and right. Discharge all of the dirty oil, retighten the plug screw and add new engine oil to

(A). After a waiting period, if there is engine oil leaking from (B), this means that the engine oil is full.

Figure 4-26 Lifter Hydraulic Oil Filter Maintenance

Figure 4-27 Front Drive Oil Level Check

58

Instruction on maintenance

4.16 Transmission Mechanism Maintenance

Pull out the oil dipstick on the right of the main gear lever (as show in in the figure), wipe it clean and then insert the oil dipstick. If the oil level is lower than the lower scale mark, refill the transmission oil to a level between the upper scale mark and the lower scale mark of the dipstick

(measure the level 5 minutes after adding the oil).

When replacing the transmission oil, remove the drain plug at the bottom of the transmission case, discharge all of the dirty oil and then tighten the drain plug and refill with new transmission oil.

Figure 4-28 Transmission Mechanism Maintenance

Note: When checking the oil level, stop the tractor on level ground and switch off the engine.

• Unscrew the fill plug at the back upper part of the lifter shell (as shown in the figure). If the oil level is lower than the upper scale mark of the dipstick refill.

• When replacing the trans-hydraulic oil, unscrew the drain plug (A) on the back lower part of the lifter, drain the dirty oil, tighten the plug and refill with new trans-hydraulic oil.

Figure 4-29 Lifter Oil Dipstick

Figure 4-30 Lubrication Oil Oil Plug

NOTE:

Stop the tractor on level ground, descend the lift arm to the lowest position, switch off the engine and then check the oil level.

59

Maintenance Instruction

• Stop the tractor on level ground, switch off the engine and then remove the drain plug below the fuel tank.

Discharge the sedimented dirt at the bottom of the fuel tank.

• The sediment bowl of the fuel tank gathers water and impurities. When maintaining the fuel tank, the sedimented dirt in the sediment bowl B at the bottom of the fuel tank should be discharged simultaneously.

Figure 4-31 Fuel Tank Maintenance

Figure 4-32 Fuel Tank Sediment Bowl

4.19 Tire Inflation Pressure

Check the tire pressure with the an air pressure guage. The tire inflation pressure is shown in the Technical

Specifications of XT Series Tractor.

NOTE: If the tire pressure is too high or too low, it will shorten the service life of the tires, influence the tractor’s operation and potentially cause accidents.

60

Maintenance Instruction

4.20 Engine Cooling System Maintenance

The engine cooling system uses antifreeze only. In general, antifreeze is good for a period of 2 years or 1600 hours and then should be replaced, the cooling system should be flushed before new antifreeze is added. (Note : Antifreeze must be used to prevent freezing in winter) Close the radiator drain valve, add a

50/50 anti-freeze mix and run the engine for 20 minutes. Check for leaks and fluid level once engine has cooled down.

Picture 4-33

Engine Cooling System

Maintenance

NOTE: During winter, water in the radiator can freeze, causing the engine block to crack. Always use antifreeze in the radiator.

4.21 Bleeding the Fuel System

If a tractor is out of commission for a long time, after replacing the diesel engine filter or with an empty fuel tank, air could enter the fuel line, making it difficult to start the engine. This problem can be fixed by following the steps below but first the fuel tank should be filled and the fuel cutoff switch turned on:

• Unscrew the bleeder screw (A) on the fuel filter and toggle the fuel supply pump draw knob (B) up and down until the diesel is discharged out of the hole of the bleeder screw and there are no bubbles.

• Tighten the bleeder screw (A), then unscrew the fuel injection pump bleeder screw. Pump the fuel supply hand primer knob (B) until the diesel is discharged out of the hole of the bleeder screw and there are no bubbles, then tighten the bleeder screw (C).

Picture 4-34

Exhausting the Fuel System

NOTE: The engine runs on high-quality light diesel fuel and must meet specifications. Generally, light diesel

No. 2 is applied during the summer while No.1 is used during the winter.

61

Storage

5. Storage

When the tractor needs to be stored for a period of time (more than one month) it should be kept in proper storage building. The storage facility should provide protection from the elements so as to prevent dirt rust and corrosion.

Before storing the tractor, it must undergo a thorough cleaning, adjustment and tightening of various joint parts, subject to the technical maintenance requirements, in compliance with the duty hours, so that the tractor remains on good technical condition.

IMPORTANT NOTE: During long periods of non-use, it is very important to preserve and maintain the tractor. If special steps are not taken, the life of the tractor could be shortened and parts could deteriorate.

5.1 Causes of the Damages

There are several main causes of tractor damage while in storage:

• Rust: During the storage period, dust and moisture in the air get in to the tractor. This can cause contamination and rusting of the components. When pistons, valves, bearing and gears, etc. stay in one place for an extended period of time, they will lose lubricant film protection, which produces rust and causes parts to stick and seize up.

• Aging: Some components are made with rubber and plastic. Rubber and plastic will age and deteriorated, growing brittle and rot under ultraviolet light.

• Distortion: Components such as drive belt and tires etc may become distorted in shape.

• Others: Electric parts are more easily affected in damp conditions and the battery can discharge over time.

5.2 Tractor Storage

• Prior to storing the tractor, give the tractor and its surroundings a good once over to ensure that the tractor can be stored with minimal effect

• Remove the battery, coat the terminals with petroleum jelly and keep it in a dark, well-ventilated room with a consistent moderate temperature.

• Drain the machine oil from the engine before it has a chance to cool. Replace the oil with fresh oil and run the tractor for 10 minutes to allow the lubricant to stick to the parts and components.

• Add lubricant to the various lubrication points.

• Coat the contact surface of the electric appliances, tie-ins and non-painted metal parts with anti-corrosion spray.

• Loosen the engine fan belt and remove them if necessary. Wrap the belts up securely and spray the pulley groove with a rust-proof agent. If possible, cover all chips and unpainted spots on the tractor with a preservative.

• Drain the diesel fuel from the tank or add diesel fuel conditioner.

• Seal any engine opening such as intakes/outlets with the protective material to prevent foreign matter, dust and moisture from getting in.

• Place all control handles in the neutral gear position (including electrical system switches and the stationary brake system).

62

Storage

• The tractor should be parked in a dry, well-ventilated area. Never store your tractor around flammables or corrosive materials. If you don’t have access to such an area, make sure that you cover the tractor with a waterproof covering.

• Any parts taken from the tractor should be cleaned, wrapped and stored in a dry area.

5.3 Tractor Storage Maintenance

• Check on the tractor and its parts at least once a month to see whether there is any rust, corrosion, aging and distortion happenings

• Start the tractor bi-monthly and allow the engine to run. This will prevent interior rust.

• If possible, drive the tractor once every three months at low speed for 20 to 30 minutes. This is a great way to see how the tractor is fairing in storage.

• Clean dust off the top of the battery with dry cloth, and check the charge level.

The battery can go dead even when not in use. Recharge the battery once a month.

When transporting long distances by train, truck, or trailer the gears should not be engaged.

Transporting the tractor with the gears engaged, will drive the parts such as the gears, bearings, crankshaft and pistons, which can rub without lubricant and cause damage.

IMPORTANT: If you cannot carry out the anti-rust treatment and the tractor needs to be out of use for several months or longer, at a minimum, replace the machine oil and oil filter. Start the tractor once every month and run the tractor at low speed for 20–23 minutes at a minimum. Check to make sure everything is operating properly and keep the tractor clean and try to limit the amount of corrosion that could result from dust and wet conditions.

5.4 Removing Tractor from Storage

• Remove the grease used for anti-rusting

• Reopen the various sealed up nozzles and clean the tractor

• Check coolant, machine oil, and diesel fuel and lubricate all of the lubrication points according to the provisions.

• Remove any anti-rust agent in the belt grooves and reinstalls and/or adjust the belts. (See:

Engine Instruction for Use and Maintenance)

• Reinstall the battery and check the terminals.

• Check that all of the circuits, hoses and lines are properly connected.

• Check air pressure in tires.

NOTE: Please refer to the “Engine Instruction for Use and Maintenance” for details on engine storage and removing tractor from storage.

63

Storage

6. Transportation

If the tractor is displaced by self-drive, local traffic regulations should be strictly observed with at least 180 feet of distance maintained between vehicles. If the tractor is being transported, the following points should be satisfied:

1. A smooth, level spot should be selected for loading and unloading the tractor.

If available, a special unloading platform should be used.

3. Have one helper available for guiding and make sure the area is clear of all others.

4. After loading, the lift should be placed at the lowest position, the hand brake set, the reverse gear engaged, the key taken out, and the master switch turned off.

5. The front and rear tires should be fixed in place with straps in an 8 pattern. Both front and rear tires should be blocked and the rear axle secured with straps.

6. The tractor should be pulled inside as far as possible and the rear view mirror may be taken down when necessary

7. When tunnels and bridges are encountered, full attention must be paid to the load height, and speed should be adjusted for road safety.

8. While unloading, the hand brake should be released first. The drive gear should then be engaged and the tractor should be unloaded slowly and carefully.

64

Technical Specifications for XT Series Tractors

7. Technical Specifications for XT Series Tractors

7.1 Technical Specifications for 2W Drive XT Series Tractors

Type

Unit

20XT 22XT 25XT

Outline size

Wheelbase

Tread

Ground clearance

Tuning circle radius

Structural mass

Length (incl. rear suspension

Width mm

Single sided brake

Non-single sided brake

1470

Height(up to the top of muffle) mm 1907,or1933/1863,or1889 mm

Front wheel mm

1577/1690

1100、1200、1300(adjustable)

Rear wheel mm

1150~1200、1300~1350(adjustable) mm 320(tires 8.3-24),or 347.5(tires 9.5-240[gearbox, down-side to ground] m 2.5±0.2/2.6±0.2 m 2.9±0.2/3.0±0.3

Mass distribution

Front wheel

Counterweight

Nominal traction power

PTO shaft power

Number of gears

Theory speed

(calculated with the rear wheels 9.5-24)

Common gear

Drive gears

Reverse gear kg

Rear wheel kg

Front counterweight kg

Rear counterweight kg kN kW

——

Shuttle gear

Drive gears

Reverse gear km/h

Clamping gear

Drive gears

Clamping drive gear

Reverse gear

4.3

13

470

680

54

4.5

14.5

124

4.8

16

8F+2R、8F+8R、16F+4R

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

2.71 12.53

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

1.92, 2.92

4.59, 6.32

8.87, 13.51

21.2, 29.22

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

0.44, 0.67

1.06, 1.46

2.04, 3.11

4.88, 6.73

2.71 12.53

65

Type

Technical Specifications for XT Series Tractors

Unit

20XT 22XT

Clamping reverse 0.58,2.69 gear

25XT

Engine

Working device

Auxiliary turning brake system

Working device

Type

Number of cylinders

Cylinder diameter x stroke

Combustion chamber mode

——

—— mm

Vertical, water cool, 4 strokes diesel

95×105/80×90

2/3

100×105/85×90 straight-injection or swirl

Nominal power

Nominal rotate speed

Nominal fuel consumption rate on the operating condition

Nominal oil consumption rate on the operating condition

Frame assembly

Front shaft kW r/min g/kW h

14.7

2350

16.2

2350

18.4

2350

≤266.6/≤278.8 or ≤268(KM385BT)

≤2.04/≤2.72

—— Frame/semi-frame

Tire pressure

Transport

Plough

Tire specification

Front wheel

Rear wheel

Front wheel

Rear wheel

Front wheel kPa

——

200~250

120~150

200~250

100~120

4.00-16,or 5.00-16

Rear wheel —— 8.3-24(paddy field tires),or 9.5-24(conventional)

Front wheel toe-in

Steering gear

Max. rotating angle, front wheels

Brake

Trailer brake

Deep plough control mode

Hydraulic oil pump mm 4~10

—— Worm-roller or hydraulic steering gears

50°

——

——

Position and floating control

CBJ30-E06-W5B, or pump CBJ30-E14-W5B / pump CBJ30-E14L

Oil cylinder diameter x stroke mm 63×100

Opening pressure of the system safety valve

Max. lifting power (610mm behind rear suspension point)

Mpa 17.5-18 kN 3.3 3.3 3.3 mm Rear-mounted, three-point Spherical Hinge, Cat. I Suspension system

Pin hole diameter of upper suspension point

Pin hole diameter of bottom suspension point mm mm

Φ19

Φ22

Rapid exchange joint 1pc

Hydraulic power take-off power take-off

Multiple direction

Rapid exchange joint 2pcs power take-off

PTO shaft(r/min)

PTO shaft diameter

PTO shaft position

PTO shaft revolving direction

Height of towing pothook mm ö35,6 teethed rectangle spline shaft mm

—— mm

Ground clearance 468,or 494

Clockwise(viewed from the tractor tail)

Ground clearance 468,or 494

66

Type

Technical Specifications for XT Series Tractors

Diameter of pothook

Unit mm

20XT 22XT 25XT

φ20

Single-plate, dry type, spiral spring pressed, double actions.

Combined (4+1) x 2; 8 drive gears; 2 reverse

Transmissio n system

Electric appliance instrument system

Central transmission

Differential

Differential lock

Final transmission

Electric appliance system

Battery

Regulator

Head lamp

Front direction indicator

Rear combined lamps

Rear working lamp

12V, 28W: 1pc

——

——

——

——

——

——

(i.e.16F+4R)

Spiral bevel gear

2 planet bevel gears

Jaw positive-contact

Built-in, single straight-toothed Spur Gear

12 volts, negative earth, twin-wire

6-QA-90(or 6—QW-70 service-free battery)

——

——

12V, 45W/40W: 2 pcs

12V, 5WL 2 pcs

—— 12V,21W/21W/5W,reflector(red):

—— 2 pcs, each.

——

Instrument Ampere meter, oil pressure meter, and water temp. meter

—— JK430G

Perfusion volume capacity

Starter switch

Cold start device

Water tank radiator

Fuel tank

Engine oil pan

Oil, gearbox

Hoister oil

Water tank radiator

L

NOTE:

Data behind refer to the parameters required for the 3 cylinder engine

10

21

3.5

11

9

10

67

Technical Specifications for XT Series Tractors

7.2 Technical Specifications for 4W Drive XT Series Tractors

Type Unit FT204A FT224A FT254A

Outline size

Length (incl. rear suspension mm

3030(excl. front counterweight)

Width mm 1470

Wheelbase mm 1673/1743

Tread

Ground clearance

Front wheel

Rear wheel

Single sided brake mm 1150 mm 1150~1200、1300~1350(adjustable) mm

Tuning circle radius Non-single sided brake m

Structural mass m

228 (tires 8.3-24), or 254 (tires 9.5-24[gearbox, down-side to ground]

2.6±0.2

3.1±0.3

Mass distribution

Counterweight

Front wheel

Rear wheel

Front counterweight

Rear counterweight

Nominal traction power

PTO shaft power

Number of gears

Estimated speed

(calculated with the rear wheels 9.5-24)

Common gear

Shuttle gear

Clamping gear

Drive gears

Reverse gear

Drive gears

Reverse gear

Drive gears

Clamping drive gear

Reverse gear

Clamping reverse gear kg 500 kg 680 kg

54 kg

124

6.5

16 kN 5.4 5.8 kW 13 14.5

——

8F+2R,or16F+4R

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

2.71 12.53 km/h

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

1.92, 2.92

4.59, 6.32

8.87, 13.51

21.2, 29.22

2.06, 3.14

4.92, 6.79

9.52, 14.5

22.76, 31.37

0.44, 0.67

1.06, 1.46

2.04, 3.11

4.88, 6.73

2.71 12.53

0.58,2.69

68

Type

Engine

Transmission system

Technical Specifications for XT Series Tractors

Type

Number of cylinders

Cylinder diameter x stroke

Combustion chamber mode

Unit

——

—— mm

——

FT204A FT224A FT254A

Y385T or

KM385BT

Vertical, water cool, 4 strokes diesel

2/3

95×105/80×90 100×105/85×90 straight-injection or swirl

Nominal power

Nominal rotate speed kW r/min

14.7

2200

16.2

2300,or

2350

18.4

2350

Nominal fuel consumption rate on the operating condition

Nominal oil consumption rate on the operating condition g/kW h

≤266.6/≤278.8 or ≤268(KM385BT)

≤2.04/≤2.72

Single-plate, dry type, spiral spring pressed, non-independent double actions.

Combined (4+1) x 2; 8 drive gears; 2 reverse

Central transmission

Differential

Differential lock

Front drive axle

Final transmission

Central transmission, front

Differential

Final transmission, front

——

——

——

——

——

——

(i.e.16F+4R)

Spiral bevel gear

2 planet bevel gears

Jaw positive-contact

Built-in, single straight-toothed Spur Gear

2 planet bevel gears

Single straight-toothed Spur Gear

Tire

Transfer case specification

Front wheel

Rear wheel

——

——

——

Straight-toothed column gear joint separation device

6.00-14

9.5-24(conventional)

Tire pressure

Transport kPa turning system

Auxiliary

Perfusion volume capacity

Plough kPa

Front wheel toe-in

Steering mode mm

——

Max. rotating angle, front wheels angle

Water tank radiator

Fuel tank

Engine oil pan

Oil, gearbox

Hoister oil

Oil, frontal drive axle

L

Note:

Data behind refer to the parameters required for the 3 cylinder engine

120~150

100~120

6~12

Hydraulic pressure steering

50°

10

21

3.5

11

9

4.5

69

8. Disassembly and disposal

After the machine reaches the end of its service life, for your personal safety and the protection of the environment, please deliver it to the licensed company specialized in the disassembly and recycle of such products.

When done, the tractor should be disassembled in a sequence, from top to bottom, outside to inside. In case of large objects or heavy mass, a special hoisting mechanism should be used. Please take the battery to a battery recycling company and collect all waste oil for proper treatment.

WARNING: The battery electrolyte is corrosive. Take precautions to ensure that it does not get in your eyes or on your skin or clothes. If this were to happen, clean the affected area immediately with water and seek medical treatment as soon as possible.

ATTENTION: Battery acid and machine oil are contaminants. Contaminants should be disposed of properly following local laws so as not to cause any damage to the environmental.

Breaking down a retired tractor requires special tools and practical experience. A lack of either of these can add up to serious injury to damage to the environment.

WARNING: When disassembling large or heavy objects (i.e., a tractor) a special hoisting mechanism must be used and care should be taken to ensure safety at all times.

70

9. Limited Warranty

LIMITED WARRANTY

4WD Diesel Tractor & Compact Crawler / Bulldozer

NorTrac ™ equipment is sold by NorTrac; a division of Northern Tool & Equipment Company, Inc. NorTrac will repair or replace, at its option, any part(s) thereof of the NorTrac ™ 4WD diesel tractor or compact crawler / bulldozer that are shown to be defective in material and/or workmanship, under normal use during the applicable warranty period. There is a $100.00 deductible on the labor per warranty repair. After the labor deductible, all warranty repairs and replacements will be made without charge for parts or labor at a pre-authorized service center. All parts replaced as a result of this limited warranty become the property of

NorTrac and must be returned upon request. All parts replaced will become a portion of the whole and will be warranted for the duration of the original equipment warranty.

Length of Warranty

The limited warranty begins on the original date of purchase and extends to 24 months for consumer household use. For the commercial end user, the limited warranty continues for thirty (30) days (Commercial use is defined as all applications in which the equipment is used for income production purposes, business purposes, or used by any governmental agency).

To qualify for the limited warranty you must:

• Be the original purchaser of the equipment. The limited warranty is non-transferable.

• Provide proof of purchase.

• Have purchased the equipment in the United States from authorized representatives of NorTrac and/or Northern Tool & Equipment Company, Inc.

To obtain service you must:

Contact NorTrac’s Service Manager by calling 1-800-521-0438, select option #4, and relay your concerns about the equipment and to receive authorization from the Service Manager. Or mail a letter with detailed failure and contact information to the address listed at the bottom of this page.

After receiving authorization from NorTrac’s Service Manager and the address of the Preauthorized Service center, take the equipment to the service center during their regular business hours. Transportation costs are the responsibility of the equipment owner.

If you are not able to secure warranty service from the authorized service center or are not happy with the service, please contact NorTrac’s service manager by calling 1-800-521-0438 and selecting option #4.

Exclusions and Warranty Disclaimers:

This limited warranty applies to equipment used in its original form. Any unauthorized modifications or any incorporation or use of unsuitable attachments or parts will automatically void this limited warranty.

This limited warranty does not include parts affected or damaged by accident and/or collision, normal wear & tear (battery, belts, tires, clutch, etc.), fuel contamination, or from failure to follow the instructions contained in the User Manual for the equipment. The cost of normal maintenance of the equipment is the responsibility of the owner.

This limited warranty does not extend to use in applications for which the equipment was not designed or to damages resulting from misuse, abuse, or neglect.

71

9. Limited Warranty

Disclaimer of Consequential Damage:

Any implied warranty of merchantability or fitness for a particular purpose, to the extent that either may apply to any NorTrac ™ tractor or compact crawler / bulldozer, shall be limited in duration to the periods of the express warranties shown above, and to the extent permitted by law any and all implied warranties are excluded. In no event will NorTrac or Northern Tool & Equipment Company, Inc. be liable for any loss of income, loss of time or use of the product, transportation, hiring of alternative services, commercial loss or any other incidental, consequential, or special damages and / or expenses. Some states do not allow limitations on how long an implied warranty lasts and / or do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusions and limitations may not apply to you. This limited warranty gives you specific legal rights which may vary from state to state.

NorTrac

C/O Service Manager - Warranty Information

2800 Southcross Drive West — PO Box 1219

Burnsville, MN 55306

72

10. Appendixes

10.1 Tractor Fuel, Oils and Solutions

Table 10-1 Tractor Fuel Oils and Solutions

Application

Locations of Oils and Solutions

Fuel, Oils and Solutions

Fuel Tank

International

Adopt ASTM D-975 fuel. Under general air temperatures, use 2-D grade standard fuel; when ambient temperatures are below 32 F, use 1-D grade fuel.

Engine Sump

International

Engine sump, injection pump, and governor use viscosity grades compliant with SAE viscosity classifications. Use all-season SAE 15W/40 multi-grade standard oil. Quality class should comply with API CD grade standard.

Water radiator Use a 50/50 blend of antifreeze and water.

Gearbox-rear axle, hydraulic

International lifter, and front standard drive axle

Drive system and lifter, hydraulic steering, and central and final drives of front drive axle can use MF1135 (Massey Ferguson), M2C 86A (Ford), or

J20A (John Deer) general-purpose oil.

Steering fluid zirks

International Same as above. standard

Use a multipurpose grease. standard

IMPORTANT NOTES:

Hybrid use of oils of different brands and manufacturers can affect the service performance of the machine. Their use is not recommended.

NOTE:

1. Never fill fuel into the fuel tank while the diesel engine is running, as doing so, could cause an accident.

2. When working in severe sunlight, the fuel tank should not be filled up, or the fuel may overflow as a result of expansion. The overflowed fuel should be cleaned up immediately.

73

10.2 Major Bolts and Nuts Tightening Torque Table

Table 10-2 Major Bolts and Nuts Tightening Torque Table

Name and Assembly Position Thread

Specification

Connecting bolt and nut for the engine and the clutch housing

Connecting bolt for the clutch housing and the rear axle casing

Fixing bolt for one- and two-axle bearings M10

Fixing bolt for the interlocking wedge M10

Fixing bolt for the driven spiral bevel gear M10×1.25

Connecting bolt for the drive shaft housing and rear axle casing

Connecting bolt for the drive wheel hub and radials

Lock nut for the front axle tie rod

Connecting bolt for the front outer shaft and front inner shaft

Connecting bolt for the front drive wheel, front wheel hub and radials

M16X1.5

Connecting bolt for the front axle and bracket

Connecting bolt for the front bracket and battery tray

Connecting bolt for the bracket and engine M12

Connecting bolt for the bracket and engine M14X1.5

Connecting bolt for the raiser housing and rear axle casing

Connecting bolt for the direction converter and clutch housing

Connecting bolt for the gag lever post bracket

Tightening

Torque[N·m]

41~51

50~70

45~55

122~149

73~89

126~154

Tightening Torque

[LB FT]

30~37

36~51

33~40

90~110

53~65

93~114

WARNING: When tightening the major bolts and nuts on the tractor, torque wrenches should be used to avoid a reduction in machine performance and personal injury, which is caused by a failure to meet the requirements for the tightening torques.

74

10.3 Tractor Rolling Bearing

Table 10-3 Schedule of Tractor Rolling Bearings

Sequence

No.

Code Bearing Code Name of Bearing Installation Position

276 6203-Z

Deep groove ball bearing

Deep groove ball bearing

Deep groove ball bearing

Front end of clutch axle

Front end of power take-off drive shaft

Front end of transfer case output shaft

Back end of power take-off shaft Deep groove ball bearing

Deep groove ball bearing

Intermediate drive driving gear

Front drive axle back-end reduction driving gear

Front drive axle intermediate drive driven gear

Deep groove ball bearing

Deep groove ball bearing

External end of drive shaft

Internal end of drive shaft

Deep groove ball bearing

Back end of power take-off drive shaft

Front end of power take-off drive shaft

Back end of transfer case output shaft

Deep groove ball bearing

Deep groove ball bearing

External end of semi-minor axis

Front end of the first shaft of gearbox

NT305E(for single

-action clutch)

Cylindrical roller bearing

Back end of the first shaft of gearbox double-action clutch) bearing

Conical roller bearing

Conical roller bearing

Back end of the second shaft of gearbox

Front end of the second shaft of gearbox

Both ends of differential gear

Quantity

1

1

1

1

2

2

2

2

2

1

1

1

2

1

1

1

2

2 worm

1

1

Conical roller bearing

Conical roller bearing worm

External end of front wheel hub

Internal end of front wheel hub

2

2

One-way thrust ball bearing

Steering knuckle vertical shaft

Lower end of front final drive housing

2

2

Release bearing Release bearing for clutch 1

75

Sequence

No.

Code Bearing Code Name of Bearing

688711(for double

-action clutch)

Rolling needle bearing

Rolling needle bearing

Rolling needle bearing

Rolling needle bearing

Angular contact ball bearing

Angular contact ball bearing

Tappered roller bearing

Tappered roller bearing

Tappered roller bearing

Rolling needle bearing

10.4 Tractor Chassis Sealing Member

Installation Position

Transfer-case idle shaft

Transfer-case output shaft

~ Gear of driven gear

Range stationary gear

Internal end of front drive shaft

External end of front drive shaft

Middle part of driving bevel gear shaft

Front axle differential carrier

Front end of driving bevel gear shaft

IV gear of driving gear

III gear of driving gear

Table 10-4 Schedule of Tractor

Chassis Sealing Member

Quantity

2

2

2

2

2

2

1

2

1

1

1

Gearbox

GB/T 9877.1

Self-seal packing for revolving shaft

JB/T2600 reinforced seal

GB/T3452.1

O-rings

B35×55×8

FB35×55×8

B50×72×8

B55×75×8

PD50×80×12

Front end of the first shaft

Inside the bearing cap of power take-off shaft

Outer flank of drive shaft

Inner flank of drive shaft

Final drive driving gear shaft

11.8×1.8G

15×2.65G

22.4×2.65G

PTO shift fork shaft

Differential lock declutch shift shaft

Reverse gear shaft

28×3.55G Final drive driving gear shaft

67×3.55G 2 nd

-shaft front bearing saddle

103×3.55G Rear-axle bearing saddle

112×3.55G Drive shaft sleeve

6

4

2

2

2

1

1

1

2

1

2

2

Brake GB/T3452.1

O-rings

Front shaft

Non standard (see the drawing)

GB/T3452.1

O-rings

Vertical shaft oil seal

40×48×6.5

Half shaft oil seal

38×74×11.5

30×3.55G

Lower end of steering knuckle

Front wheel hub

Upper ends of left and right steering knuckles

2

2

2

76

JB/T2600 reinforced seal

JB/T 982

Sealing gasket

Both ends of rocking shaft 2

Raiser

Distributor

GB/T3452.1

O-rings

GB/T3452.1

O-rings

Oil pump and oil circuit

GB/T3452.1

JB/T2600

oil seal

Transfer case

GB/T3452.1

O-rings

Front drive axle

JB/T2600

Skeleton oil seal

GB/T 3452.1

O-rings

18×22

36×42

71×2.65G

17×2.65G

53×5.3G

53×5.3G

9×2.65G

13.2×2.65G

15×2.65G

19×2.65G

O-rings 18×2.65G

Hydraulic output hollow bolt

Oiling ventilation plug assembly

Sealing part of cylinder sleeve and housing

Cylinder head regulating vavle

Piston and oil cylinder tube

Piston and oil cylinder tube

Handle shaft, safety valve seat

Composition face between distributor and lifter housing

Safety valve holddown screwed-in plug

Composition face between distributor and lifter housing

Composition face between distributor and lifter housing

Oil pickup

1

1

1

1

1

1

1

1

1

1

1

1

SG30×45×8 Transfer-case output shaft

36.5×2.65G

53×2.65G

PG45×65×10

1 shift 1

Front end of rear-jacket welding case

Back end of rear-jacket welding member

Oil seal housing washer

2

1

2

SD50×70×12

W50×72×7

33.5×3.55G

Lower end of vertical shaft sleeve

Lower end of vertical shaft sleeve

Driving bevel gear shaft

2

2

2 pendulum 2 pendulum 2

77

75×2.65G

85×3.55G

170×3.55G

175×3.55G

Bearing cap

External end of half shaft sleeve

Driving bevel gear bearing saddle

Drive shaft cap

Internal end of half shaft sleeve

2

2

2

2

2

NOTICE: Before using a supporting farm implement, the owner/operator should read the machines

“operation and maintenance manual” carefully and become familiar with the construction, performance and method of operation to avoid machine damage and personal injury caused by accident.

IMPORTANT NOTES:

1. Before purchasing farm machines and implements, select a good match with your machine or consult a reputable dealer. Understand your operational conditions (soil resistance, agricultural requirements, etc.) of the areas where you will be working and referring to this list.

2. Determine the main technical parameters of the farm machines and implements such as models according to the operational conditions (soil resistance, agricultural requirements, etc.) of the areas where you will working and refer to the advisories in order to get the appropriate match. Improper matching will make the new machinery ineffective and, possibly, dangerous.

3. Working efficiency can be dependent on the implement, the performance of which may vary with operational conditions (soil resistance, agricultural requirements, etc.). Therefore, you should determine working speed and width, etc. and make your purchase accordingly.

Distributed by Northern Tool + Equipment Co., Inc.

Burnsville, MN 55306-6936

Made in China

78

On Line Spare Parts System

Fill in http://222.132.52.85:8080/

Choose English

Choose

“Guest”

Choose product Model and Code:

Choose “Parts catalogue”

TE25 Serials TE204-L161Q5K

Then you can find the parts catalog and diagram of the tractor:

TE25 Serials TE204-L161Q5K

Then search here

TE25 Serials TE204-L161Q5K

On Line Spare Parts System

Fill in http://222.132.52.85:8080/

Choose English

Choose

“Guest”

Choose product Model and Code:

Choose “Parts catalogue”

TE25 Serials TE254-L161Q68K

Then you can find the parts catalog and diagram of the tractor:

TE25 Serials TE254-L161Q68K

Then search here

TE25 Serials TE254-L161Q68K

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