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John Deere 5050D, 5045D, 5042D - Engine and Drivetrain

John Deere 5050D, 5045D, 5042D - Engine Oil and Filter

Check Engine Oil Level

Park tractor on level ground, put range shift lever in neutral, set brakes and turn engine OFF. Pull out dipstick . Oil level must be between two marks on dipstick. Do not operate engine when oil level is below LOW mark on dipstick. If level is low, add oil through the oil filler port until even with the upper mark. Do not overfill.

Change Engine Oil and Filter

Run engine to heat oil. Turn off engine. Remove oil drain plug and drain oil. Replace engine oil filter while changing oil. Apply a film of oil on the new oil filter gasket and install new filter. Hand tighten plus 1/2 turn. Install drain plug. Add seasonal viscosity grade oil. Engine Crankcase Oil Capacity - 8.5 L/ 6.5 L. In Break-in-period, change the oil in first 100 hours.

John Deere 5050D, 5045D, 5042D Engine - Air Cleaner

Service Air Cleaner

A dual element air cleaner is standard. A dirty primary element is indicated when the air filter restriction indicator on the instrument panel illuminates. A dirty element can result in loss of power or excessive smoke. Check unloader valve frequently. Empty often to keep it from filling with dust. If valve is allowed to fill with dust, air cleaner element plugs rapidly. Service air cleaner when indicator light illuminates, every 250 hours or at least once a year. Replace primary element at least one a year. Remove secondary element only when being replaced, normally once a year.

Replace Air Cleaner Elements

Open hood and remove side screen. Release clips. Remove cover. Remove primary element. Clean out any dirt in canister taking care not to damage the secondary filter element. If secondary element is replaced, install new element immediately to prevent dust from entering the air intake system. Removal of the secondary element is similar to removal of the primary element. When installing the air cleaner canister, make sure that the dust unloader valve is facing down. Install secondary element, primary element, and cover. Install side screens.

Remove Primary Air Cleaner Element

Disconnect rubber strap at the front of the canister. Lift clip and pull canister cover. Clean out any dirt in canister taking care not to damage the secondary filter element. Removal of the secondary element is similar to removal of the primary element.

John Deere 5050D, 5045D, 5042D - Clean Primary Element

Pat sides of element gently to loosen dirt. DO NOT tap element against a hard surface. Clean element with compressed air (below 690 kPa or 100 psi). Hold nozzle next to inner surface, and move up and down pleats. Inspect element before reinstalling.

Wash Primary Element

If element is coated with oil or soot, wash in a solution of warm water . Let element soak at least 15 minutes, then agitate gently to flush out dirt. Rinse element thoroughly from inside with clean water. Use element cleaning gun or a free-running hose. Keep water pressure low (below 280 kPa or 40 psi) to avoid damaging element. Allow element to dry completely before using. This usually takes from one to three days. DO NOT oven dry or use drying agents. Protect element from freezing until dry. Inspect element before installing.

Inspect Element

Hold a bright light inside element and check carefully for holes. Discard any element which shows the slightest hole. Be sure that the outer screen is not dented. Vibration would quickly wear a hole in filter. Be sure rubber sealing surfaces are in good condition on both ends. If damaged, replace element.

John Deere 5050D, 5045D, 5042D Cooling System

Check Coolant Level

Check the coolant level when engine is cold. Clean radiator in most dusty conditions. Failure of cleaning leads to improper flow of coolants through radiator which leads to a temperature increase of coolants. Check coolant level in the coolant recovery tank. Coolant level must be up to the Cold Mark. If it is below Cold Mark, add coolant to that mark only.

Flush Cooling System

For efficient operation, drain old coolant, flush the entire system, and fill with clean antifreeze solution at least once every 2 years. Drain coolant - Remove radiator cap. Open drain plug on radiator and attach a drain hose. Route hose to container and drain coolant from radiator. Drain coolant from the engine block by removing plug. Thermostat must be removed to ensure a thorough flush. Remove thermostat cover, remove thermostat and install cover (without thermostat). Tighten cap screws to specification. Thermostat Cover Cap Screws Torque - 47 Nm (35 lb-ft).

Flush system with water - Close all drain valves/plugs and fill system with clean water. Run engine about 10 minutes to stir up possible rust or sediment. Stop engine and drain water from system before rust and sediment settle. Flush system with radiator cleaner - Close all drain valve/plugs and fill the cooling system with a good commercial radiator cleaner and water. Follow instructions provided with cleaner. Stop engine and immediately drain system.

Flush system with water - Close all drain valves/plugs and fill with clean water to flush the system. Run the engine about 10 minutes, then drain out flushing water. Remove thermostat cover and clean off the gasket material. Apply gasket sealant to the new gasket and install the thermostat and cover. Tighten cap screws to specification. Fill with fresh coolant - Close all drain valves/plugs and fill with a mixture of antifreeze, soft water, and coolant conditioner.

Check coolant level - Fill radiator to the top of the filler neck. Run the engine until operating temperature is reached. Let the engine cool (preferably overnight) and recheck the coolant level. Coolant level with a cold engine must be at the bottom of the filler neck. When filling the cooling system it is required several operating/cooling periods to stabilize the coolant level in the system. Add make-up coolant to the radiator as needed and bring the coolant level to the correct level.

Clean Grille, Screens, and Radiator

Whenever trash builds up on the front grille, stop engine and brush clean. Clean radiator in most dusty conditions. Failure of cleaning leads to improper flow of coolants through radiator which leads to a temperature increase of coolants. Once finished the cleaning makes sure that hood is locked properly and keeps the hood lock key with operator only. Raise hood and see if trash has built up on radiator. If so, remove it using a brush or compressed air. If a more thorough cleaning is necessary, clean radiator from behind with compressed air or water. Straighten any bent fins.

John Deere 5050D, 5045D, 5042D Fuel System

Replace Fuel Filter Inserts

Remove cap screw and filter element bowl. Take out filter insert. Drain the fuel and clean the bowl. Install new filter insert. Reinstall the bowl and tighten the screw and washer. Bleed the system from bleed screw. Change primary and secondary filter inserts alternatively. Never change both filter inserts simultaneously. Always use new O-ring which comes filter inserts.

Bleed Fuel System

Loosen fuel return line. Unscrew hand primer on the fuel supply pump until it can be pulled by hand. Operate the hand primer until fuel flow is free from air bubbles. Simultaneously stroke the hand primer down and close the fuel return port. This prevents air from entering the system. Tighten securely. Lock hand primer in position.

Bleed Fuel System at Fuel Injection Nozzles

If engine does not start after the bleeding procedures described above, continue as follows: Place throttle lever in high idle position. Using two open-end wrenches, loosen fuel line on at least three nozzles. Turn over the engine with the starter motor until fuel flows free from bubbles out of the loosened fuel nozzle connections. Retighten connections.

John Deere 5050D, 5045D, 5042D - Alternator and Fan Belt

Replace Alternator and Fan Belt

Loosen cap screw and bolt and rotate the alternator to free the belt. Remove belt from drive pulley. Belt can be pulled around the fan to remove. Install new belt in reverse order of removal. Adjust belt tension.

Inspect and Adjust Alternator/Fan Belt

Replace if worn or damaged. Run engine for five minutes to warm a cold belt. Let a hot belt cool for 15 minutes before adjustment. Check tension by pressing belt midway between pulleys. Belt deflects about 19 mm (3/4 in) at 89 N (20 lbf). Adjust tension by loosening cap screw and mounting bolt. Apply force to the alternator frame until belt tension is correct. Tighten cap screw and bolt.

John Deere 5050D, 5045D, 5042D Transmission

Change Transmission-Hydraulic Oil and Filter

Lower rockshaft to remove trapped oil. Remove drain plug from transmission case and drain oil. Dispose off the waste oil properly. Replace filter while changing oil. Apply a film of oil to the new filter gasket and install new filter. Hand tighten only. Fill system with transmission-hydraulic oil. Transmission Oil (Oil Axle) Capacity - 32 L. Transmission Oil (Grease Axle) Capacity - 30 L. Check oil level at sight glass after filling. Make sure that oil level is to the full level mark. Check again after operating for five minutes. Add oil if necessary.

Clean Transmission-Hydraulic Pickup Screen

Drain transmission-hydraulic oil. Remove two cap screws and remove screen cover. Remove screen and examine it for damage. Replace if necessary. Clean screen in solvent and blow dry with compressed air. Carefully install the screen so the front of screen is inserted in the hole at the front of differential case. Fill system with transmission-hydraulic oil. Check oil level at sight glass after filling and again after operating for five minutes.

John Deere 5050D, 5045D, 5042D Front Axle

Adjust Front Axle Tread Width

Jack up the front end of tractor. When making large tread adjustments, loosen cap screws and adjust the tie rod length with axle length. Remove two nuts, sleeves, and cap screws from the front axle (2 on each side). Slide axle knees to desired position. Both sides must be adjusted to same spacing. Install sleeves (if equipped), cap screws, and nuts on each side. Tighten cap screws to specification. Adjustable Front Axle-to-Knee Bolts Torque - 400 Nm (295 lb-ft). Set toe-in.

John Deere 5050D, 5045D, 5042D - Check Toe-In

Park machine on a flat, level surface. Turn steering wheel so front wheels are in the straight-ahead position. Stop engine. Measure distance between tires at the hub level in front of the axle. Record measurement and mark the tires. Move tractor back about 1 m (3 ft), so mark is at the hub level behind the axle. Again, measure distance between tires at same point on tire. Record measurement. Determine the difference between front and rear measurements. If the front measurement is smaller, toe is in. If the rear is smaller, toe is out. Distance at the front of tires must be 0-2 mm for the DANA front axle. Adjust toe-in if necessary. Toe-In Value (DANA Front Axle) - 0-2 mm

Adjust Toe-In

Loosen lock nut on tie rod. Adjust tie rod equally by rotating tube to lengthen or shorten the tie rod. Adjust toe-in to 0-2 mm for the DANA front axle. Tighten bolt to specification. Do not overtighten as damage to the tube can occur. Tie Rod Jam Nut Torque - 90 Nm (66 lb·ft)

Check Toe-In (JD 5050D Tractor with MFWD)

Disengage MFWD and park tractor on smooth, level surface. Steer front wheels straight ahead. Stop engine. Measure distance between the centerline of tires at the hub level in front of the axle, using an outside bar of each tire or an inside bar of each tire. Record measurement and mark the tires. Move tractor back about 1 m (3 ft), so mark is at the hub level behind the axle. Again, measure distance between tires at same point on tire. Determine the difference between front and rear measurements. If the front measurement is smaller, toe is IN. If the rear is smaller, toe is OUT. The difference can be in either direction (toe-in or toe-out but must be less than 3 mm (1/8 in). Adjust toe-in necessary.

Adjust Toe-In (JD 5045D Tractor with MFWD)

Jack up the front axle so tires are off floor. Rotate tire by hand and scribe a line near the center of each of the front tires. One of the tie rod ends and lock nut has left-hand threads. Measure and record the distance between the lines at the front and the rear of the tire at about axle height. The front measurement must be less than the rear measurement. If measurement is not correct, loosen lock nuts on both ends of tie rod and turn the tie rod using a wrench to increase or decrease the amount of toe until the measured dimension is 0-0.125 in (0-3 mm). MFWD Tie Rod Jam Nuts Torque - 173-192 lbs. ft (235–260 Nm).