Fuel Filter: Service and Repair

Fuel Tank, Filler, And Hose Routing:

Warning: The fuel system is under constant pressure, even when the engine is OFF. Always release fuel pressure before servicing any fuel system component.

Removal

1. Release fuel system pressure.
2. Disconnect the negative battery terminal
3. Remove filter mounting screw, and remove filter assembly from frame rail.
4. Loosen inlet and outlet hose clamps. Use an appropriate shop towel to absorb any leakage, and remove hoses. Discard used clamps.

Installation

1. Install filter on hoses with new clamps, and torque to 1 Nm (10 lb-in).
2. Install fuel filter on frame rail.

Note: ASD and fuel pump relays remain energized for 7 minutes during the following test, unless the test is stopped or the ignition switch is turned to the OFF position.

3. Using scan tool, place ignition switch in "RUN" position and use Actuate Output Test "Auto Shutdown (ASD) Relay", to activate fuel pump and pressurize system.
4. Check for leaks.