John Deere Tractor 8430

Drive tractor to warm oil, then park tractor on level ground.

Remove drain plug (A) on bottom of rear differential case.

Remove transmission housing drain plug (B).

Remove Independent Link Suspension differential plug (C) if equipped.

For tractors with PST Transmission, follow steps 6, 7 and 11 through 13.

Remove large transmission filter screen plug (B).

Remove filter screen and wash carefully in solvent. Blow dry with compressed air before reinstalling screen.

For tractors with IVT transmission, follow steps 8 through 13.

Checking Coolant Level (De-aration Tank)

De-aeration tank cap pressure relieved

Coolant added as specified in Fuel, Lubricants and Coolant section

De-aeration tank cap reinstalled

Replacing Fuel Filter Elements (Both Fuel Filters)

Cleaned exterior of fuel filters and surrounding area

Drained water and contaminants from primary fuel filter into suitable container

Disconnected the water-in-fuel (WIF) sensor connector from primary filter

Removed the final fuel filter first, for clearance, using a suitable filter wrench

Removed primary fuel filter canister

Replaced primary fuel filter element with new one

Replaced packing for primary fuel filter canister with new packing provided with filter element

Lubricated packing for primary fuel filter with fuel, and installed canister onto base

Cleaning or Replacing Primary and Secondary Engine Air Filters

Unfasten plastic clips and remove filter cover

Turn and pull to remove primary filter

Clean filter using compressed air

Hold a bright light inside filter and check for damage

Replace filter elements and install cover

Remove battery compartment cover

Adjusting Engine Valve Clearance

Draining, Flushing, and Refilling Engine Cooling System

Turn key to Run for tractors equipped with ATC

Remove deflector beneath radiator drain valve

Open radiator drain valve and drain coolant into catch pan

Open engine drain valve and drain coolant into catch pan