John Deere Tractor 5203

Change transmission-hydraulic oil and filter

Lower rockshaft to remove trapped oil

Remove drain plug (A) from transmission case and drain out oil

If equipped with MFWD axle, also remove drain plug (B) in drop housing

Replace filter (B) while changing oil

Apply a film of oil to new filter gasket and install new filter. Hand tighten only

Fill system with transmission-hydraulic oil

Check oil level at dipstick (D) after filling, and again after operating for five minutes

Remove oil drain plug (A) and drain oil

Replace engine oil filter (B) while changing oil. Apply a film of oil on the new oil filter gasket and install new filter. Hand tighten plus 1/2 turn

Add seasonal viscosity grade oil. (See Fuels, Lubricants and Coolant section.)

Replace transmission-hydraulic filter

Remove filter (A). Apply a film of oil to new gasket and install new filter. Hand tighten plus 1/2 turn

Run engine several seconds and recheck transmission-hydraulic oil level

DO NOT operate engine when oil level is below low mark on dipstick.

If level is low, add oil through oil filler hole until even with upper mark. DO NOT over fill.

Check coolant level in coolant tank

If engine is cool and level is below 'LOW' add coolant to recovery tank to bring to 'LOW'.

Drain water and sediment from fuel tank

Drain water and sediment from fuel filter

Drain coolant from radiator and engine block

Remove thermostat cover and thermostat, install cover without thermostat

Flush system with water, run engine for 10 minutes, then drain water

Flush system with radiator cleaner, follow cleaner instructions, then drain system

Flush system with water again, run engine for 10 minutes, then drain water

Remove thermostat cover, clean gasket material, apply gasket sealant to new gasket, install thermostat and cover

Fill system with mixture of antifreeze, soft water, and coolant conditioner

Check coolant level, fill radiator to top of filler neck, fill recovery tank to 'LOW' mark

Run engine until operating temperature is reached, let engine cool, recheck coolant level

Replace transmission-hydraulic filter

Inspect and adjust alternator/fan belt

Adjusting PTO Clutch Operating Rod