REMOVAL & INSTALLATION
See Figures 1, 2, 3 and 4
The in-line fuel filter is located on the fuel feed pipe, before the fuel injection system, and mounted directly in front of the rear axle. The filter housing is constructed of steel with quick-connect inlet and threaded outlet fittings. The threaded fitting is sealed with an O-ring. In order to disengage quick-connect fittings, a fuel line quick-connect separator tool set, such as J-37088-A or equivalent, is required. There is no service interval for fuel filter replacement. Only replace the fuel filter if it is restricted.
- Release the fuel pressure as follows:
In order to perform this procedure as listed below, fuel pressure gauge kit J-34730-1 or equivalent is required.
- Disconnect the negative battery cable.
- Loosen the fuel tank filler cap in order to relieve the fuel vapor pressure from the fuel tank.
- Connect fuel pressure gauge J 34730-1 or equivalent to the fuel pressure connection. To avoid spillage while disconnecting gauge, wrap a shop towel around the fitting.
- Install the bleed hose from the gauge into an approved container and open the valve to bleed the fuel system pressure.
At this point, fuel connections are now safe for servicing.
- Raise and safely support the vehicle.
- Clean both the inlet and the outlet fittings on the fuel filter.
Disengage the quick-connect fittings at the fuel filter inlet as follows:
- Slide the dust covers from the quick-connect fittings, if equipped.
- Grasp both sides of the fitting. Twist female connector 1 / 4 turn in each direction to loosen any dirt within the fitting. Using compressed air and safety glasses, blow dirt out of fitting.
- If equipped with the plastic hand releasable fitting, squeeze the plastic retainer release tabs and pull the connection apart.
- If equipped with metal fitting, choose correct size tool from tool set J-37088-A. Insert tool into female connector, then push inward to release locking tabs. Pull the connector apart.
- Use a clean lint free rag to clean male pipe ends. Inspect both ends of the fitting for dirt and burrs. Clean or replace components as required. If it is necessary to remove rust or burrs from the fuel pipe, use emery cloth in a radial motion with the pipe end to prevent damage to the O-ring sealing surface.
- Remove the threaded outlet fitting from the chassis fuel pipe. Slide the fuel filter from the bracket.
- Inspect the fuel pipe O-ring for cuts, nicks, swelling or distortion. Replace if necessary.
- Slide the fuel filter into the bracket. Thread the outlet fitting to the chassis fuel pipe.
- Tighten the in-line fitting to 20 ft. lbs. (27 Nm).
Engage the quick-connect inlet fitting as follows:
- Apply a few drops of clean engine oil to the male pipe end. This will ensure proper reconnection and prevent a possible fuel leak.
- Push both sides of the fitting together to cause the retainer tabs to snap in place. Once installed, pull on both sides of the fitting to ensure connection is secure.
- Reposition dust cover over the quick-connect fitting, if equipped.
- Lower the vehicle. Tighten the fuel filler cap.
- Confirm that the ignition is in the OFF position. Connect the negative battery cable.
- Pressurize the fuel system by cycling the ignition without attempting to start the engine. Turn the ignition switch to the ON position for two seconds, then turn to the OFF position for ten seconds. Again, turn to the ON position and check for fuel leaks.