John Deere Tractor 9230

Replacing Fuel Filter—9120 Dual Filter System (500 Hourly maintenance)

Thoroughly clean exterior of fuel filter/water separator assembly and surrounding area.

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

Remove filter elements using a suitable filter wrench.

Remove water-in-fuel sensor from old primary filter. Inspect filter O-ring condition and replace if necessary.

Using prefill cup, fill new filter element with fuel, draining any excess into suitable container.

Remove prefill cup and discard.

Lubricate gasket and install filter onto base. Tighten 3/4 of a full turn after gasket contacts the base. Connect water-in-fuel sensor.

Operate engine at 2100 rpm, with transmission in PARK position, for at least 5 minutes (or longer with cold oil) to fill axles and return oil from the axles to the transmission.

Stop engine and allow the oil level to stabilize in the sight gauge for at least 5 minutes. Recheck oil level and refill at fill tube (A) as necessary.

Primary Engine Air Filter replaced

Secondary Engine Air Filter replaced

Motor Seal Drain Filter replaced (if equipped)

Sign off on the yearly maintenance

Drain, Flush, and Refill Engine Cooling System

Slowly turn the surge cap (A) to relieve pressure, then carefully remove cap.

Remove bottom access panel and open radiator drain fitting (A) and engine block drain cock (B).

Remove thermostat cover (A) and thermostats. Install cover without thermostats. Tighten cap screws.

Close drain cocks and fill system with a commercial cooling system cleaning solution. Operate engine to operating temperature. Stop engine and drain system.

Close drain cocks and fill system with clean water. Operate engine to operating temperature. Stop engine and drain system.

Remove thermostat cover and clean all sealing material from thermostat cover and housing mounting surfaces.

Apply sealant to new gasket and install thermostats and gasket.

Install smaller (non-blocking) thermostat in top position with vent (wiggle wire)(B) at 12 o'clock position. Install larger blocking thermostat in bottom position.

Reservoir Breather Filter replaced?

Transmission/Axle Filter replaced?

Coolant tested and Coolant Conditioner added?

Engine Air Intake System cleaned?