LUBRICATION. Walker DSD56, MB

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LUBRICATION. Walker DSD56, MB | Manualzz

40

Maintenance Instructions

LUBRICATION

  WARNING

DO NOT attempt to lubricate the machine with the engine running. Disengage the

PTO clutch, shut off the machine, and remove the ignition key.

Proper lubrication is an important maintenance procedure. It reduces wear and makes the machine quieter and easier to operate.

Engine Oil - Model MBV

Engine Break-In Oil

No special break-in oil is required. The engine is serviced with 10W-30, Service Class SG oil from the factory. The oil should be changed after the initial engine break-in period of 5-8 hours. Thereafter, change oil after every 50 hours of operation.

Checking Engine Crankcase Oil Level

Check the engine crankcase oil level before use and

after each 8 hours of continuous operation.

IMPORTANT: The importance of checking and maintaining the proper crankcase oil level cannot be overemphasized. Check the oil level BEFORE

EACH USE.

1. Park the mower on a level surface with the

en gine stopped. Also, make sure the engine is cool and oil has had time to drain into the sump [allow at least five (5) minutes after stopping the engine].

IMPORTANT: NEVER check or add oil with the engine running.

2. Before removing the dipstick, clean the area around the dipstick to keep any dirt or debris out of the engine.

3. Remove the dipstick, wipe off with a clean rag, then reinsert the dipstick into the tube and press all the way down.

LUBRICATION

4. Remove the dipstick again and check the oil level on the dipstick. The oil level should be within the “Operating Range” on the dipstick (between the LOW mark and the FULL mark).

IMPORTANT: DO NOT operate engine without sufficient oil supply in the crankcase. DO NOT operate with oil level below the LOW mark or above the FULL mark on the dipstick.

Operating

Range

{

LOW

Mark

FULL

Mark

Dipstick Operating Range

5. If additional oil is needed, refer to Specifications for proper crankcase lubricant. Fill to the FULL mark.

IMPORTANT: DO NOT overfill crankcase (oil above FULL level) as this CAN result in engine overheating, loss of power, and possible engine damage.

Changing Engine Crankcase Oil/Oil Filter

Change the engine crankcase oil after every 50

hours of operation and the oil filter after every 100

hours of operation as follows:

1. Park the mower on a level surface with the

en gine stopped. The engine oil should be warm before draining. If not warm from operation, start the engine and run a few minutes to warm the oil.

Maintenance Instructions

2. Before removing the dipstick, clean the area around it to keep any dirt or debris out of the en gine.

3. Remove the dipstick and oil drain plug, and drain oil into a suitable container. Be sure to allow ample time for complete drainage.

4. Before removing the oil filter, clean the area around the filter to keep dirt and debris out of the engine.

5. Remove the old oil filter and wipe off the filter mounting surface on the engine.

Oil Fill

Dipstick

Dipstick and Oil Fill - Model MBV

(View from Above Left Side of Tractor)

LUBRICATION

7. Install the new oil filter on the engine. Turn the oil filter clockwise until the rubber gasket contacts the sealing surface, then tighten the filter an additional 1/2 to 3/4 turn.

8. Reinstall the drain plug.

9. Fill the crankcase with new, clean oil. Use only crankcase lubricants recommended by the engine manufacturer. Refer to

Specifications

in this manual or the engine owner’s manual. Use the recommended oil viscosity for the expected ambient temperature. Oil with the correct viscosity will aid starting in cold weather and assure proper lubrication in hot weather. Fill to

FULL mark on the dipstick; crankcase capacity is 1.5 quarts (1.4 liters) when changing oil and filter.

IMPORTANT: Check the dipstick reading before pouring in the last 1/2 pint of oil and fill only

to the FULL mark. The oil level should never be over the FULL mark on the dipstick; overfilling can result in engine overheating and loss of power.

10. Start the engine and check for oil leaks around the oil filter. Stop the engine, recheck the oil level, and add oil if necessary. (When the engine is first operated with a new oil filter, the oil level will drop slightly as the filter is filled with oil.)

Oil Filter

Oil Drain

Oil Drain and Oil Filter Locations - Model MBV

(View from the Rear Right Side of Tractor)

6. Apply a thin coating of new oil to the rubber gasket on the replacement oil filter.

IMPORTANT: Use ONLY oil filters from the engine manufacturer. After market oil filters may not seal properly and/or may not have the correct pressure relief valve for proper lubrication.

41

42

Maintenance Instructions

Engine Oil - Model MBK

Engine Break-In Oil

No special break-in oil is required. The engine is serviced with 10W-30, Service Class SG oil from the factory. Change the oil after the initial engine break-

in period of 5 hours. Thereafter, change oil after

every 100 hours of operation.

Checking Engine Crankcase Oil Level

Check the engine crankcase oil level before use and

after each 8 hours of continuous operation.

IMPORTANT: The importance of checking and maintaining the proper crankcase oil level cannot be overemphasized. Check the oil level BEFORE

EACH USE.

1. Park the mower on a level surface with the

en gine stopped. Also, make sure the engine is cool and oil has had time to drain into the sump [allow at least five (5) minutes after stopping the engine].

IMPORTANT: NEVER check or add oil with the engine running.

2. Before removing the dipstick, clean the area around the dipstick to keep any dirt or debris out of the engine.

3. Remove the dipstick, wipe off with a clean rag, then reinsert the dipstick into the tube and press all the way down.

4. Remove the dipstick again and check the oil lev el on the dipstick. The oil level should be within the “Operating Range” on the dipstick

(between the “L” mark and the “F” mark).

IMPORTANT: DO NOT operate engine without a sufficient oil supply in the crankcase. DO NOT operate with the oil level below the “L” mark or above the “F” mark on the dipstick.

5. If additional oil is needed, refer to Specifications for proper crankcase lubricant. Fill up to, but not above, the “F” mark on the dipstick.

IMPORTANT: DO NOT overfill the crankcase

(oil above “F” mark) as this CAN result in engine overheating, loss of power, and possible en gine damage.

LUBRICATION

Full Mark

Low Mark

Dipstick Operating Range

Changing Engine Crankcase Oil/Oil Filter

Change the engine crankcase oil after every 100

hours of operation and replace the oil filter every other oil change ( every 200 hours of operation).

1. Park the mower on a level surface with the

en gine stopped. The engine oil should be warm before draining. If not warm from operation, start the engine and run a few minutes to warm the oil.

2. Before removing the dipstick, clean the area around it to keep any dirt or debris out of the en gine.

3. Remove the dipstick and oil drain plug and drain the oil into a suitable container. Be sure to allow ample time for complete drainage.

Maintenance Instructions

Oil Fill and

Dipstick

Dipstick and Oil Fill - Model MBK

(View from Above Left Side of Tractor)

Oil Filter

Oil Drain

Oil Drain and Oil Filter Locations - Model MBK

(View from the Rear Right Side of Tractor)

4. Before removing the oil filter, clean the area around the filter to keep dirt and debris out of the engine.

5. Remove the old oil filter and wipe off the filter mounting surface on the engine.

6. Apply a thin coating of clean oil to the rubber gasket on the replacement oil filter.

IMPORTANT: Use ONLY oil filters from the engine manufacturer (Kohler 12-050-01). Aftermarket oil filters may not seal properly and/or may not have the correct pressure relief valve for proper lubrication.

7. Install the new oil filter on the engine. Turn the filter clockwise until the rubber gasket contacts the sealing surface, then tighten an additional

1/2 turn.

LUBRICATION

8. Reinstall the drain plug. Make sure it is tightened to 10 ft-lb (13.6 N · m).

9. Fill the crankcase with new, clean oil. Use only crankcase lubricants recommended by the engine manufacturer. Refer to

Specifications

in this manual or the engine owner’s manual. Use the recommended oil viscosity for the expected ambient temperature. Oil with the correct viscosity will aid starting in cold weather and assure proper lubrication in hot weather. Fill up

to, but not above, the “F” mark on the dipstick. Crankcase capacity is 1.85 quarts (1.75 liters) plus 1/2 pint (0.24 liters) for the new oil filter.

IMPORTANT: Check the dipstick reading before adding the last 1/2 pint of oil and fill only to

the “F” mark. DO NOT overfill the crankcase

(oil above “F” mark) as this CAN result in engine overheating, loss of power, and possible engine damage.

10. Start the engine and check for oil leaks around the oil filter. Stop the engine, recheck the oil level, and add oil if necessary. (When the engine is first operated with a new oil filter, the oil level drops slightly as the filter is filled with oil.)

Grease Fitting and Oil Point Lubrication

Lubricate the grease fittings and oil points after ev ery

25 hours of operation. Lubricate more often when operating in dusty or dirty conditions. Use SAE general purpose lithium or molybdenum base grease for grease fittings and light machine oil (SAE 10) to lubricate oil points. Lubricate the locations shown in the Chassis and Deck Lubrication Points illustration.

NOTE: PTO universal joints (on the deck and tractor) require routine lubrication after every 8 hours of running time.

NOTE: The best way to lubricate the PTO tube half of the universal joint assembly is to remove it from the tractor. See instructions for removing and installing PTO quick coupler, refer to Deck Installation in

Mower Deck Installation on Tractor in the Assem­ bly Instructions.

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44

Maintenance Instructions

Ident

No. Location

Lubrication No.

Type Places

1 Deck Caster Wheel Fork Pivot Grease

2 Deck Caster Wheel Bearing

3 Tee Gearbox, Deck

4 Blade Drive Gearbox

Grease

Oil*

Oil*

5 Universal Joint Shaft Assembly Grease**

6 Deck Support Arm Socket

7 Pivot Assembly, Tilt-Up Deck

8 Steering Lever Pivot

9 Deck-to-PTO Coupling

(Grease Slide Area)

10 Universal Joint Tube Assembly Grease**

11 Deck Support Arm Pivot

12 FSC Lever Pivot

13 Body Latch

14 Clutch Actuator Rod

15 PTO Clutch Lever Pivot

16 Transaxle Oil Reservoir

Grease

Grease

Grease

Grease

Grease

Grease

Oil

Grease

Grease

Oil/20W-50 1

1

1

1

2

1

1

1

2

2

2

4

2

1

2

1

LUBRICATION

Ident

No. Location

Lubrication

Type

No.

Places

17 Clutch Engagement Pivot

18 Rear Wheel Pivot

19 Tail Wheel Caster Pivot

20 Rear Wheel Bearing

Grease

Grease

Grease

Grease

21 Engine Oil (MBK) Oil***

22 Throttle Control Cable Ends (MBV) Oil

23 Engine / Oil Filler Oil***

24 Choke Control Cable Ends (MBV) Oil

25 Parking Brake Lever

26 Parking Brake Clevis

27 Choke Control Pivot

28 Throttle Control Pivot

Grease

Oil

Oil

Oil

1

2

1

2

1

2

1

2

1

1

1

2

* Gearboxes are permanently lubricated and sealed requiring no scheduled lubrication. Oil level should be checked only when an oil leak is noted.

** Grease every eight (8) hours.

*** Refer to Engine Oil located on page 40.

NOTE: DSD42 Tilt-Up Deck is shown for reference. For other

Deck Lubrication Points, refer to Deck and Carrier Frame

Illustrated Parts Manual.

Maintenance Instructions

1

2

4

6

7

7

22 & 28

11

24 & 27

26

25

26

24

23

22

21

18

1

20

Chassis and Deck Lubrication Points

15

16

17

12

13

14

14

18

19

8

9

10

11

LUBRICATION

2

6

5

4

3

7

7

45

46

Maintenance Instructions

Mower Deck Gearbox Lubrication

The mower deck gearboxes (tee gearbox and blade drive gearboxes) are connected as a unitized assembly, and oil flows freely between them. The gearboxes are permanently lubricated (oil filled) and sealed requiring no scheduled lubrication. However, the gearbox oil seals should be checked every

25 hours for indication of an oil leak; particularly

the lower seals on the blade drive gearboxes should be inspected, since they operate in a dirty environment. If an oil leak is noted, replace the oil seal and relubricate the gearbox assembly as follows:

1. Remove gearbox cover (footrest). Deck orientation should be the normal operating position.

Blade Drive

Gearboxes

LUBRICATION

IMPORTANT: DO NOT overfill the deck gearboxes. The gearbox assembly is not vented, and overfilling with oil will cause excessive pressure and result in oil leaks.

5. Check condition of the cover gasket and replace if worn or damaged. Reinstall gearbox cover plates; torque screws to 24 in-lb (2.7 N · m).

Transaxle Lubrication

· The transaxle oil lubrication is SAE 20W-50 (API

Service Class SL or higher) engine oil.

· Inspect both transaxle cases and hoses after ev-

ery 100 hours of operation for visible leaks.

· The fluid level of each transaxle can be checked visually by looking at the fluid level in the expansion reservoir. When the transaxles are cold, the fluid level in the expansion reservoir should be between

1/4 in. and 1/2 in. (0.64 cm and 1.27 cm).

Reservoir Cap

Tee

Gearbox

Mower Deck Gearboxes

(Shown with Gearbox Cover

Removed for Clarity)

2. Clean the area around the individual gearbox cover plates to prevent contaminants from entering the gearcase.

3. Remove the screws securing the cover plates on the blade drive gearboxes.

4. Check the level of lubricant in the gearboxes. If the lubricant is low, add SAE E.P. (Extreme

Pressure) 80W-90 (API GL-5) gear lube until the oil level is up to (submerges) the horizontal shaft in the gearbox (shaft parallel to cover plate).

NOTE: In case the gearboxes are completely drained of oil, approximately 5 fl. oz. (15 cl) of oil per gearbox is required to refill the gear drive assembly.

NOTE: Since the gearboxes are connected as a unit by connector tubes, it is necessary to add oil slowly. Allow a few minutes after adding oil for the oil to flow throughout the assembly and the oil level to stabilize before reassembly.

Cold Level

Expansion Reservoir Location

Transaxle Oil and Filter Change

Change the transaxle oil after the initial break-in

period of 75-100 hours. Thereafter, change oil ev-

ery 400 hours of operation as follows:

1. Thoroughly clean the exterior of the transmission housing before servicing. Using a 1/4 in. hex wrench, remove the plug on the lower inside of each transaxle allowing the oil to drain.

2. Remove and replace the oil filters using a 3/8 in. hex wrench. (Refer to Transaxle Oil Drain

Plug, Filter, and Guard Location illustration.)

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