John Deere 5020 series: 5220, 5320, 5420, 5520 service schedule

1. Front axle: give the MFWD front and rear pivot fittings several shots (and the adjustable axle pivots if fitted).
2. Grease the steering king pins, top and bottom (MFWD), or the spindles (adjustable axle).
3. Every 250 hours: grease the left and right lift links.
4. Every 600 hours: grease the rear axle fittings, both sides.
5. In very wet and muddy work, also grease the tie rod ends daily; do not over-grease because it can damage seals.

Tools: Grease gun, Rag

1. Run the engine to warm the oil, then stop it. Park on level ground, apply the park brake, lower the linkage and any implement to the ground, stop the engine, take the key out and chock the wheels.
2. Remove the drain plug and drain the oil into the tray.
3. Remove the oil filter. Wipe a film of oil on the new filter's seal and fit it hand-tight plus half a turn.
4. Refit the drain plug and fill with seasonal-grade oil to the full mark on the dipstick (about 8.5 L).
5. Start the engine, check for leaks, stop it and recheck the level. Take the old oil to a proper disposal point.

Tools: Drain tray (10 L), Filter wrench, Funnel, Rags, Gloves

1. Stop the engine and take the key out. Empty the dust unloader valve as often as needed.
2. Take out the primary element and clean or replace it. Never run the engine without it.
3. Remove the secondary only when it is due for replacement.
4. Wipe out the housing, refit the elements and close it.

Tools: Compressed air (low pressure), Torch

1. Take off the recirculation vent cover and pull the filter out. Wash it under running water and dry it with compressed air, or fit a new one.
2. Fresh air filters sit above the cab doors. Slacken the retainer screws, slide the plates away and take the filters out. Blow them clean or replace them.
3. Refit everything.

Tools: Compressed air (low pressure), Screwdriver

1. Park, stop the engine and chock the wheels.
2. Remove the filter. Wipe a film of oil on the new seal and fit it hand-tight plus half a turn.
3. Run the engine for a few seconds, then recheck the transmission/hydraulic oil level and top up if needed.

Tools: Filter wrench, Drain tray, Rags, Gloves

1. Close the fuel shut-off valve.
2. Remove the retaining ring and the old filter element.
3. Fit the new element with the retaining ring hand-tight.
4. Open the shut-off and bleed the air (loosen the return line and work the priming pump until fuel runs smoothly, then tighten it). Do not try to start the engine during bleeding.

Tools: Container for fuel, Rags

1. Park on level ground, stop the engine and chock the wheels.
2. Remove the drain/fill plugs on both hubs (hole at 6 o'clock) and the housing, and drain the oil.
3. Turn the hubs until the level mark is horizontal. Refit the drain plug.
4. Fill the housing and hubs with 80W-90 gear lubricant to the mark or the bottom of the fill hole.
5. Oil flows slowly through the bearings, so recheck the level after 30 minutes and top up.

Tools: Drain tray (10 L), Spanners, Funnel, Gloves

1. Ask your dealer to adjust valve clearance, inspect the injectors and check the front axle pivot pin end play.
2. Remove the crankcase vent tube, wash it in solvent or blow it clean, and check it is not kinked.
3. Check the hoses and clamps on the air, cooling, hydraulic, fuel and heater circuits.
4. Idle speeds: slow idle should be 825–875 rpm (the 5020 manual says 825 ± 25 rpm) and fast idle with no load about 2,550–2,625 rpm at most; if not, see your dealer.

Tools: Booking with your dealer

1. Warm the oil by driving, then park, stop the engine and chock the wheels. Lower the rockshaft to release trapped oil.
2. Remove the drain plug in the transmission case. On MFWD tractors also remove the plug in the drop housing.
3. Replace the filter. Wipe a film of oil on the seal and fit it hand-tight.
4. Remove the two screws and the pickup screen cover, take out the pickup screen, check it, clean it in solvent and blow it dry. Refit it with a good O-ring.
5. Refit the plugs and fill with Hy-Gard.
6. Check the dipstick after filling and again after 5 minutes' running.

Tools: Drain trays (45 L in all), Spanners, Filter wrench, Funnel, Gloves

1. Only work on a cold engine; loosen the radiator cap slowly.
2. Drain the radiator and the engine block (cold-start switch on the 5210/5310 or the block drain plug on the 5410/5510).
3. Remove the thermostat so the flush is thorough, refit the cover without it (47 N·m) and flush with water, then radiator cleaner, then water again.
4. Fit the thermostat with a new gasket, refit the cover and fill with the antifreeze mix.
5. Run to temperature, let it cool overnight and top up to the LOW mark on the recovery tank.

Tools: Drain tray, Hose, Torque wrench (47 N·m)