OMTCU14008

Issue L0

Z-Trak ® FRONT MOWER

F680

PIN (020001-)

Introduction

Product Identification

Safety

Operating

Replacement Parts

Service Intervals

Service Lubrication

Service Engine

Service Transmission

Hydraulic Oil

Check Hydraulic Oil Level

Change Hydraulic Oil and Filter

Checking and Replacing Pump Drive Belt

Checking and Adjusting Transmission Neutral

Adjusting Control Lever Neutral Start Switches

Service Steering & Brakes

Service Electrical

Service Miscellaneous

Troubleshooting

Storage

Assembly

Specifications

Warranty

John Deere Quality Statement

Service Record

Copyright© Deere & Company

Service Transmission

Hydraulic Oil

Use the following oil viscosity based on the air temperature range. Operating outside of the recommended oil air temperature range may cause premature hydrostatic transmission failure.

The following John Deere oil is preferred:

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· PLUS-4®-SAE 10W-40

· PLUS-50®-SAE 15W-40

Other oils may be used if they meet the following:

· API Service Classification SJ

· CCMC Specification G5

Check Hydraulic Oil Level

NOTE: Check oil level in reservoir tank when oil is cold.

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Raise cowling.

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3. Clean area around reservoir dipstick cap (A).

4. Turn and remove dipstick cap from the oil reservoir tank.

5. Wipe dipstick clean.

6. Install dipstick cap but do not turn it.

7. Remove dipstick cap.

8. Check oil level on dipstick.

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9. Oil should be to the top of the "FULL COLD" mark (B).

10. Add oil, if necessary.

11. Lower cowling.

Change Hydraulic Oil and Filter

c CAUTION: Avoid injury! Escaping fluid under pressure can penetrate the skin causing serious injury. Avoid the hazard by relieving pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure. Search for leaks with a piece of cardboard. Protect hands and body from high pressure fluids. Use caution when filling and draining hydraulic oil. During periods of machine operation the hydraulic oil reservoir can get hot. Allow engine and oil reservoir to cool before servicing.

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Raise cowling.

3. Allow engine and hydraulic oil reservoir to cool.

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4. Turn hydraulic oil filter (A) counterclockwise to remove. Allow hydraulic oil to drain into a drain pan with at least a 5.7 L (1.5 gal) capacity.

5. Apply a film of clean oil on gasket of new filter.

6. Install filter. Turn filter clockwise until gasket makes contact with the mounting surface. Tighten 1/2 to 3/4 turn after gasket contact.

7. Clean area around reservoir dipstick cap.

8. Turn and remove dipstick cap (B) from the oil reservoir tank.

9. Fill oil reservoir with approximately 5.7 L (1.5 gal) of oil.

10. Start engine.

11. Move throttle lever to the fast position.

12. Unlock park brake.

c CAUTION: Avoid injury! Remain alert to bystanders and the surroundings while operating the machine.

13. Cycle control levers forward and rearward several times. Check for leaks around filter.

14. Stop the engine. Check oil level. Add oil as necessary.

15. Lower cowling.

Checking and Replacing Pump Drive Belt

c CAUTION: Avoid injury! Prevent injury due to entanglement in a belt or pulley. Stop engine and wait for all moving parts to stop before servicing machine.

NOTE: The transmission drive belt will not require a tension adjustment. Belt is self-adjusted using a spring tensioner.

Checking Belt:

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Raise cowling.

3. Disconnect spark plug wires.

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4. Inspect belt (A) for excessive wear, damage or stretching while in position on the transmission sheaves and drive belt tensioner pulley.

Replacing Belt

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1. Disconnect PTO clutch electrical connection (B) located below the left steering pump.

NOTE: Do not remove the PTO driveshaft from the mower deck gearbox.This service procedure is easier when the driveshaft is removed from the clutch housing.

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2. Disconnect mower deck PTO driveshaft by removing four hex bolts (C).

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3. Remove lock nuts (D) and PTO clutch bumpers (E).

4. Stand on the right side of the front mower. Pull and hold spring loaded pump drive belt tensioner handle (F) rearward.

5. Remove belt from drive sheaves and idler pulley.

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Picture Note: Belt installation as viewed from the rear of the machine.

6. Install replacement belt:

· Pull and hold belt tensioner handle (F).

· Install belt onto drive sheaves and idler pulley as shown.

· Release belt tensioner handle.

7. Install PTO clutch bumpers.

8. Align PTO driveshaft mounting holes with the clutch mounting holes.

9. Install four hex bolts (C). Tighten alternately to 44 N·m (33 lb-ft).

10. Connect PTO clutch electrical connector.

11. Install spark plug wires.

12. Lower cowling.

Checking and Adjusting Transmission Neutral

c CAUTION: Avoid injury! Engine exhaust fumes can cause sickness or death: · If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove the fumes. · Always try to work in a well ventilated area.

Check Adjustment:

1. Park machine on a hard, level surface.

2. Start engine.

3. Set throttle lever to the 1/2 fast position.

4. Unlock park brake.

· If drive wheels begin to creep, an adjustment is required.

Transmission Neutral Adjustment:

1. Stop engine.

2. Lock park brake.

3. Remove mower deck from the machine. (See Removing Mower Deck in the mower deck operator's manual.)

4. Elevate front of machine with a safe lifting device, wood blocks or jackstands.

· Drive wheels must have the ability to rotate freely.

· Drive wheels may be removed for better access to the transmission.

5. Move control levers to the swing-out neutral position.

6. Raise cowling.

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7. Locate both steering control cables (A) under the front mower cowling.

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8. Disconnect left and right steering cable rod ends (C).

· Loosen and remove locknut (D).

· Remove eyebolt (E) from slotted arm plate (F).

9. Have a helper depress bottom of operator seat to activate the seat safety switch.

10. Start engine.

11. Unlock park brake.

· If drive wheels continue to creep, a transmission drive pump dampener adjustment is required.

· If no drive wheel creep is detected, bypass the drive pump dampener adjustment and proceed to the control cable adjustment.

Adjust Transmission Drive Pump Dampeners:

c CAUTION: Avoid injury! Prevent injury due to entanglement in a belt or pulley. Be aware that adjustment of the dampeners is made near a moving belt. Remove gloves or other loose fitting clothing before doing this adjustment.

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1. Locate left and right drive pump dampener assemblies (G).

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2. Loosen jam nut (H).

3. Rotate each dampener cylinder (I) until creep is gone.

4. Tighten jam nut.

5. Check adjustment. Continue to adjust dampeners until creep is gone.

6. Adjust control cables.

Adjust Control Cables:

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1. Loosen steering cable jam nuts (G).

NOTE: Eyebolts should be installed to the bottom of each slotted control arm plate.

2. Adjust cable rod ends (C) up or down until eyebolts (E) can be inserted absolutely perpendicular inside the slotted arm plates (F).

3. Install and tighten lock nuts (D).

4. Tighten jam nuts (G).

5. Check adjustment. If further adjustment is required, repeat steps 1-4.

6. Lock park brake.

7. Stop engine.

8. Lower cowling.

9. Check tracking adjustment.

Adjusting Control Lever Neutral Start Switches

c CAUTION: Avoid injury! Avoid sickness or death from exhaust fumes. Work in a well ventilated area.

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Both control lever neutral safety switch positions (A) are adjustable if necessary.

Test Neutral Start Switches

1. Park front mower on a hard, level surface.

2. Lock park brake.

3. Raise cowling.

4. Start engine.

5. Slowly move both control levers to a centered neutral position.

· If properly adjusted, the engine should stop.

· If the engine continues to run, a neutral start switch adjustment will be needed.

Adjust Neutral Start Switch Position

1. Stop engine.

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2. Bend switch mounting bracket (B) as needed.

3. Test switch adjustment.

4. Lower cowling.