Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere 3032E, 3036E, 3038E - Drive train service

John Deere 3032E, 3036E, 3038E Tractor Front Axle Service

Checking Front Axle Oil Level

Allow oil one hour to settle before checking level to ensure accurate dipstick reading. Repeat oil level check after several hours of operation. Check front axle oil level with machine parked on level surface. Park machine safely. Allow machine to cool down for at least one hour. Dirt and debris in oil may cause damage to the transaxle. Clean area around opening before removing dipstick. Loosen and remove dipstick located on right side of front axle. Wipe dipstick clean with a rag. Install and tighten dipstick. Remove dipstick again. Oil level should be indicated on the dipstick, but not above the full line. If oil level is low: Add recommended oil through dipstick fill opening until oil level is correct. Install and tighten dipstick. Check front axle oil level again after the first several hours of operation.

Changing Front Axle Oil

Operate machine to warm front axle oil. Park machine safely. Position drain pan under differential drain plug. Remove differential drain plug and allow oil to drain. Position drain pan under axle drain plug on both sides of front axle. Remove axle drain plugs and allow oil to drain. Install and tighten all three drain plugs after all oil has drained. Remove dipstick located on right side of front axle. Add recommended oil into dipstick filler opening. Install and tighten dipstick. Drive JD 3032E, 3036E, 3038E tractor one minute at low speed, in both forward and reverse to help fill wheel ends. Allow oil one hour to settle before checking level to ensure accurate dipstick reading. Repeat oil level check after several hours of operation. Check front axle oil level.

Adjusting Front Axle Thrust Bolt Torque

Adjust bolt torque at the required service interval to prevent excessive forward and rearward movement of the front axle. Park machine safely. The machine can fall or slip from an unsafe lifting device or supports. Use a safe lifting device rated for the load to be lifted. Lower machine onto jack stands or other stable supports and block wheels before servicing. Raise front axle off ground to take machine weight off the front axle. Loosen jam nut. Tighten bolt to 14 Nm (10 lb-ft). Do not overtighten. Oscillate axle from stop to stop. Check torque. Tighten back the jam nut. Lower front axle back to ground.

John Deere 3032E, 3036E, 3038E Tractor Transmission Service

Checking Transmission Oil Level

Allow oil one hour to settle before checking level to ensure accurate dipstick reading. Repeat oil level check after several hours of operation. Check transmission oil level with machine parked on level surface. Park machine safely. Allow machine to cool down for at least one hour. Remove dipstick located at left side of transaxle. Wipe dipstick with a clean rag. Install dipstick. Remove dipstick and check oil level. Oil level should be between the minimum and maximum lines. Help prevent dirt and other contaminants from entering the John Deere 3032E, 3036E, 3038E transmission. Clean area around fill cap before removing. Do not overfill transmission. Oil expands during operation and could overflow. If oil level is low: Remove oil fill cap located at right side of transaxle. Add recommended oil at fill cap location. Install and tighten fill cap. Recheck oil level.

Changing Transmission Oil and Hydraulic Suction Oil Filter

The engine, components, and fluids will be hot if the engine has been running. Allow the engine to cool before servicing or working near the engine and components. If there is evidence of severe oil contamination, it may be necessary to change the oil several times. Contamination of hydraulic fluid could cause transmission damage or failure. Severe or unusual conditions may require a more frequent service interval. Drive JD 3032E, 3036E, 3038E tractor a few minutes to warm and mix transmission oil. Park machine safely. Position drain pan under transmission drain plug at rear cover and suction filter assembly and spin-on pressure filter at left side of transmission. Remove plug and allow oil to drain. Shown with left rear tire removed for better view. Remove suction filter and allow oil to drain. Remove and HST filter and allow oil to drain. Install transmission drain plug. Replace both filters. Clean area around fill cap before removing. Do not overfill transmission. Oil expands during operation and could overflow. Remove fill cap. Add recommended oil into filler opening. Start engine. Check for oil leaks around filter bases and drain plugs. Stop engine. Check transmission oil level.

John Deere 3032E, 3036E, 3038E Transmission Operating

The range shift lever provides two speed ranges. The range shift lever is used in conjunction with the forward and reverse travel pedals. Select the proper speed range and gear for the job: Never overload engine by lugging machine at low idle speeds. Raise engine speed to match expected loads. If a slight increase in engine rpm occurs simultaneously with moving hand throttle lever forward, the engine is not overloaded. Choose a speed range to match work application. L - Low speed/high power operations such as tilling hard soil, mowing high grass. L or H – Operations including hauling, and grass mowing. H - High speed operations such as transport and light mowing.

Driving Machine

To prevent John Deere 3032E, 3036E, 3038E transmission damage, stop machine motion completely before shifting the range shift lever. Start machine engine. Unlock park brake. Choose L or H speed range on transmission range shift lever to match work application. Move hand throttle lever to desired operating speed. Slowly depress forward pedal downward to travel forward. Slowly depress reverse pedal downward to travel in reverse. The farther either travel pedal is depressed, the faster the machine will travel. Release travel pedal to stop machine and change speed range. Fully stop machine motion before turning key switch to off.

John Deere 3032E, 3036E, 3038E Power Take-off

Testing Rear PTO Knob

Sit on operator’s seat. Lock park brake. Move the transmission range lever to neutral. Pull the PTO engagement knob to the engaged/on position. Turn key switch to start position. Engine must not crank. Push the PTO engagement knob to the disengaged/off position. Turn key switch to off position. Testing Rear PTO/Seat Switch Interface - Sit on operator’s seat. Lock park brake. Push the PTO engagement knob to the disengaged/off position. Start JD 3032E, 3036E, 3038E engine. Set engine speed at 1500 rpm. Pull the PTO engagement knob to the engaged/on position. Raise up from operator’s seat. Do not dismount machine. Engine should stop. Push the PTO engagement knob to the disengaged/off position. Turn key switch to off position. Using Rear PTO - The Rear PTO is only operational with the operator on the seat.

Engaging Rear PTO

Sit on operator’s seat. Stop machine motion, remove foot from forward and reverse travel pedals. The starter will not crank if the PTO knob is pulled to the engaged/on position. If the operator leaves the seat with the engine running and the PTO engaged, the safety interlock system will stop the engine. Reduce throttle setting to 1500 rpm. Pull the PTO knob to the engaged/on position to engage the rear PTO. Adjust the hand throttle lever forward to the desired speed for implement used. The PTO icon on the tachometer indicates the correct engine rpm for a standard 540 PTO. Disengaging Rear PTO - Adjust engine rpm to low idle speed. Push the PTO knob to the disengaged/off position to disengage the rear PTO.

John Deere 3032E, 3036E, 3038E Tractor Brakes

Brake/Differential Lock Pedal

Depress pedal 20 - 25mm (3/4 - 1 in.) to operate differential lock. Depress pedal beyond 25mm (1 in.) to operate brake. Locking Park Brake - Always lock park brake and move transmission range shift lever to a position other than N (neutral) before leaving machine unattended. Transmissions will not prevent machine motion without the park brake locked. Press down firmly on brake/differential lock pedal. Pull park brake lever up to locked position. Remove foot from brake/differential lock pedal.

Unlocking Park Brake

Press down firmly on brake/differential lock pedal. Pull up slightly on park brake lever while depressing release button. Push park brake lever down to unlocked position. Remove foot from brake/differential lock pedal.

John Deere 3032E, 3036E, 3038E Front Wheel Drive

Differential Lock (Traction Assist)

The John Deere 3032E, 3036E, 3038E differential lock is used to provide better traction when the rear wheels start to slip. Engaging the differential lock will lock the right and left side rear axles together and cause both rear wheels to turn at equal speeds for maximum traction. Using the traction assist function improperly can damage the transaxle: Reduce speed and allow drive wheels to rotate at same speed before engaging or disengaging traction assist. Disengage traction assist when driving on dry asphalt or concrete. Use traction assist only when necessary for improved ground engagement. Turning radius is increased when the differential lock is engaged. Engaging Differential Lock - Stop or slow machine movement. Depress pedal 20 - 25mm (3/4 - 1 in.) to operate differential lock. Disengaging Differential Lock - Rear wheel slippage will keep differential lock engaged. Lock will automatically disengage when traction equalizes.

Mechanical Front Wheel Drive (MFWD)

JD 3032E, 3036E, 3038E Mechanical front wheel drive (MFWD) enables the powertrain to drive both front and rear axles for improved traction on difficult ground conditions and provides 4-wheel braking. MFWD can be engaged and disengaged on-the-go with light loads and on low traction surfaces. Use extra caution when driving on slopes. To increase traction and provide four-wheel braking, engage mechanical front wheel drive (MFWD) when driving on slopes. Be aware that MFWD can improve access to dangerously sloped terrain, thereby increasing the possibility of tipover. To improve braking on sloped, icy, wet, or graveled surfaces, engage the MFWD. Add ballast to the tractor and travel at a reduced speed to avoid skidding and loss of steering control. Always disengage MFWD when driving on a paved surface. Put the transmission levers in neutral to move the machine when the engine is not running.

Pull up on MFWD lever to engage MFWD. It may be necessary to reduce engine load to disengage front wheel drive. Push down MFWD lever to disengage MFWD. Tips for Operating MFWD: Maintain front tire pressure at maximum allowable level to ensure proper tire performance in all field conditions. Engage MFWD to provide four-wheel braking. Disengage MFWD when driving machine to or from work site to increase front tire life.

John Deere 3032E, 3036E, 3038E Tractor Wheels and Tires

Checking Wheel Bolts and Hardware

When John Deere 3032E, 3036E, 3038E tractor is new or anytime wheel hardware is loosened, tighten all bolts after one hour of operation and every four hours thereafter until proper torque values are maintained. Tightness of wheel hardware must be maintained according to service interval recommendations. Check wheel bolt tightness as follows: Front Wheel Bolts - Tighten front wheel bolts alternately to 140 Nm (103 lb-ft). Rear Wheel Bolts - Tighten rear wheel bolts alternately to 140 Nm (103 lb-ft). Removing and Installing Wheels - Use a safe lifting device and support machine securely on jack stands. Block front and rear of wheel not raised to prevent machine movement. Wheel can be heavy or difficult to handle when removing.

Front Wheel Removal and Installation

Loosen lug nuts slightly before raising front axle. Raise front of machine and lower onto support stands so that machine is supported by front axle. Remove lug bolts and wheel. If the front wheels are being removed to perform work on the front axles, lower machine onto suitable stands that will support the machine by the frame. Install wheels onto axle, insert lug bolts and lightly tighten bolts. Raise front of machine, remove support stands and lower machine to floor. Tighten lug bolts to 140 Nm (103 lb-ft). Rear Wheel Removal and Installation - Loosen lug bolts slightly before raising machine rear axle. Raise rear of machine and lower onto support stands so that machine is supported by rear axle. Remove lug bolts and wheel. Install wheels onto axle, insert lug bolts and lightly tighten bolts. Raise rear of machine, remove support stands and lower machine to floor. Tighten lug bolts to 140 Nm (103 lb-ft).

Checking Tire Pressure

Check tires for damage. Check tire pressure with an accurate gauge. Add or remove air, if necessary Selecting Front Tire Rolling Direction - JD 3032E, 3036E, 3038E tractors equipped with directional type tires (such as bar tires) have directional arrows located on the tire sidewall. Under most conditions, tires should be installed with the directional arrow pointing in the direction of travel. If machine is mainly used for loader operations, lug direction may be reversed to increase tire life and improve traction while backing out of dirt piles. Move wheel from one side of machine to the other to change tire rolling direction.

Changing Wheel Spacing and Tread Width

In special cases, front tires can be set to the wide position; however, the wide position cannot be used for loader operation. Using the wide position during loader operation will reduce front axle life. Rear tires can be mounted in one position only. Always make sure tires rotate in proper direction. Arrows on sidewall should point in direction of forward rotation. Rear Tire Tread Width Dimensions - 15.00-19.5 R4 GA - 1,08 m (42.8 in.), 41x14.00-20 R3 GA - 1,10 m (43.5 in.), 11.2-24 R1 GA - 1,15 m (45.2 in.). Front Tire Tread Width Dimensions - 25x8.50-14 4PR R4 GA (Narrow) - 1,08 m (42.8 in.), 27x8.50-15 4PR R3 GA (Narrow) - 1,06 m (41.7 in.), 7.00-14 4PR R1 GA (Narrow) - 1,06 m (41.7 in.), 25x8.50-14 4PR R4 GA (Wide) - 1,25 m (49.4 in.), 27x8.50-15 4PR R3 GA (Wide) - 1,28 m (50.5 in.), 7.00-14 4PR R1 GA (Wide) - 1,28 m (50.3 in.).

Checking and Adjusting Toe-In

Stop machine on a firm, level surface. Disengage MFWD if equipped. Turn steering wheel so front wheels are pointing straight ahead. Park machine safely. If front axle is equipped with bar tires, use an outside bar of each tire or an inside bar of each tire for marking the center line. Mark the center line of each tire at hub height and to the front of the axle using chalk. Measure and record distance between the center lines of each tire. Drive machine forward or rearward slightly until chalk mark moves 180 to the rear of the axle. Park machine safely. Measure and record distance again between the chalk marks. Determine the difference between front and rear measurements. Distance may be larger at front or rear measurement but should not exceed 3 mm (1/8 in.). Adjust toe-in if necessary. Loosen jam nuts on both ball joints. Rotate tie rod clockwise or counterclockwise to adjust the amount of toe-in. Adjust tie rod until toe-in measurement is within correct specification. Rotating threaded rod in 1/2 turn increments equals 1.5 mm (1/16 in.). Tighten jam nuts to 120 Nm (88 lb-ft). Check toe-in setting. Repeat procedure if further adjustment is required.

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