Service Transmission

Use oil viscosity based on the expected air temperature range during the period between oil changes.The following John Deere transmission and hydraulic oil is preferred:

· HY-GARD® (JDM J20C)

Other oils may be used if recommended John Deere oil is not available, provided they meet one of the following specifications:

· John Deere Standard JDM J20C


IMPORTANT: Avoid damage! DO NOT use engine oil, "Type F" (Red) Automatic Transmission Fluid, or BIO-HY-GARD®. DO NOT mix any other oils in this transmission.

NOTE: For temperatures below -13° (0° F), John Deere J20D HY-GARD® Low Viscosity oil may be used. If J20D is used at temperatures above -13° (0° F), some brake squeal may be heard due to lower viscosity of the oil at higher air temperature.

Checking Transaxle Oil Level


IMPORTANT: Avoid damage! Hot hydraulic oil will expand and show incorrect oil level. Check oil level: · When oil is cold. · With engine not running.

1. Park the vehicle safely. (See Parking Safely in the SAFETY section.)

2. Raise and secure cargo box.


IMPORTANT: Avoid damage! Dirt and debris in oil may cause damage to the transaxle. Clean area around opening before removing dipstick.

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3. Remove dipstick (A) located on the top of the transaxle housing. Wipe dipstick clean.

4. Check oil level by screwing dipstick fully into transaxle case, then unscrewing and checking oil level.

5. Add oil as needed through the dipstick fill hole.

6. Install and tighten dipstick.

7. Lower cargo box.

Changing Transaxle Oil


IMPORTANT: Avoid damage! If brakes start to chatter or are noisy when applied, change transaxle oil before waiting until the service interval.

1. Park the vehicle safely. (See Parking Safely in the SAFETY section.)

2. Raise and secure cargo box.

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3. Access drain plug (A) through slot on underside of machine. Remove plug and drain oil.

4. Check O-ring on drain plug. Replace if missing or in poor condition.

5. Install and tighten drain plug.


IMPORTANT: Avoid damage! Dirt and debris in oil may cause damage to the transaxle. Clean area around opening before removing dipstick.

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6. Remove dipstick (B) located on top of transaxle housing. Wipe dipstick clean.

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7. Add approximately 4.5 L (4.8 qt) of oil.

8. Check oil level by screwing dipstick fully into transaxle case, then removing to check level.

9. Wait for two minutes then check oil level. Add oil if necessary.

10. Install dipstick and tighten.

11. Lower cargo box.

Checking Drive Belt

c CAUTION: Avoid injury! Fingers or loose clothing can get caught in rotating parts. Stop engine and wait for all moving parts to stop before servicing.

1. Park the vehicle safely. (See Parking Safely in the SAFETY section.)

2. Raise and secure cargo box.

3. Rotate and inspect belt for wear or damage.

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4. Measure width (A) of belt on top surface. Dimension should be a minimum of 27 mm (1.1 in.).

5. Replace belt if worn beyond limit.

Replacing Drive Belt

c CAUTION: Avoid injury! Fingers or loose clothing can get caught in rotating parts. Stop engine and wait for all moving parts to stop before servicing.

1. Park the vehicle safely. (See Parking Safely in the SAFETY section.)

2. Raise and secure cargo box.

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3. GATOR 6x4 - Remove hardware securing belt shield (A). Remove belt shield.

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4. Route belt over pulley (B) of driven clutch.

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5. Remove belt from drive pulley (C).


IMPORTANT: Avoid damage! Drive belt must be installed so indicator arrow on belt points in the direction of belt rotation (toward front of vehicle).

6. Make sure arrow on smooth side of drive belt points toward front of vehicle. Install new belt by routing over drive pulley and then over the driven clutch pulley.

7. GATOR 6x4- Install belt shield.

Checking Drive Chain Tension (6x4)

c CAUTION: Avoid injury! Do not rely on a lifting device alone to support machine while servicing. Always use jack stands or wooden blocks to support vehicle while work is being performed with machine raised.

NOTE: Drive chain is set taught at the factory and will not reach normal stretch limits until vehicle has experienced reasonable hours of operation.

1. Stop vehicle on level surface. Stop engine, but do not lock park brake.

2. Put transmission in neutral and differential lock in off position.

3. Use a safe lifting device to raise all four rear wheels off ground. Place jack stands or wooden blocks under vehicle.

4. Raise and secure cargo box.

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5. Rotate rear wheels toward each other so that chain sag is at top of chain.

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6. Place straight edge across top of sprockets and measure distance (sag) from bottom of straight edge to top of chain. Slack should be 13 to 25 mm (0.5 to 1.0 in.).

7. Adjust chain tension if necessary.

Adjusting Drive Chain Tension (6x4)

c CAUTION: Avoid injury! Fingers or loose clothing can get caught in rotating parts. Stop engine and wait for all moving parts to stop before servicing.

1. Park vehicle on a level surface. Stop engine, but do not lock park brake.

2. Put transmission in neutral and differential lock in off position.

3. Use a safe lifting device to raise all four rear wheels off ground. Place jack stands or wooden blocks under vehicle.

4. Raise and secure cargo box.


IMPORTANT: Avoid damage! Avoid stripping threads from adjustment bolt (C). Loosen housing nuts (A) before turning adjustment bolts.

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5. Loosen four nuts (A) for both axles so axle housings (B) can slide easily forward and rearward.


IMPORTANT: Avoid damage! Do not adjust chain too tightly or it could be damaged.

6. Turn adjustment bolts (C) at both sides to remove chain sag. Make sure chain tension is the same at both sides of vehicle.

7. Tighten axle housing nuts (A) to 90 N·m (70 lb-ft), then back off adjustment bolts (C) one half turn to relieve force on bolt.

8. Check for proper and equal chain tension at both sides of vehicle.

9. Rotate drive wheels approximately 120°. Check again at both sides of vehicle for equal chain tension, making sure no tight spots exist. Repeat two more times.

10. Remove jack stands and lower vehicle to ground.

Cleaning Primary Drive Clutch


IMPORTANT: Avoid damage! Never lubricate any part of the primary drive clutch.

1. Park the vehicle safely. (See Parking Safely in the SAFETY section.)

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2. Using a marking pen, place an alignment mark on clutch cover (A) where it meets the clutch.

3. Remove three screws securing clutch cover. Remove cover.

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4. Use compressed air to blow out all surfaces of clutch (B).

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5. Wipe out inside surface of clutch cover with a clean, dry cloth.

6. Install clutch cover so marks are aligned. Secure with original hardware.

Checking Secondary Driven Clutch Buttons

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Check for missing or worn clutch buttons (A):

· There should not be any excessive wear, or metal-to-metal contact.

· If replacement is necessary, see your John Deere dealer, or consult the technical manual.

Introduction

Product Identification

Safety

Operating

Replacement Parts

Service Intervals

Service Lubrication

Service Engine