John Deere Tractor 8230

Clean exterior of fuel filters and surrounding area

Drain water and contaminants from primary fuel filter into suitable container by opening drain valves on bottom of filter

Disconnect the water-in-fuel sensor connector from primary filter

Remove the final fuel filter first, for clearance, using a suitable filter wrench. Then remove primary fuel filter canister

Remove primary fuel filter element and replace with new element

Remove packing for primary fuel filter canister and replace with new packing provided with filter element. Lubricate packing for primary fuel filter with fuel, and install canister onto base. Tighten 1/2 turn after packing contacts base

Lubricate packing on new final fuel filter, and install filter onto base. Tighten 1/2 turn after packing contacts base

Turn key switch to ON position for 60 seconds to allow transfer pump to prefill fuel filters

Slowly turn de-aeration tank cap (A) to relieve pressure. Remove cap.

Test coolant using TY26605 COOL-GARD™II 3-way test strips available from your John Deere dealer.

Add TY26603 COOL-GARD II Coolant Extender available from your John Deere dealer as indicated by the color matrix on reader card in test strip pack. If tank is too full, drain a small amount of coolant from system before extender is added.

Install de-aeration tank cap and lower hood.

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

Check filter for damage with a bright light

Replace filter elements and install cover

Remove battery compartment cover

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.

Changing Transmission/Hydraulic Oil And Cleaning Transmission Filter Screen

Remove large transmission filter screen plug (B).

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

Remove four cap screws (A) and cover.

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

Sign off on the 100 Hourly Maintenance