Fuel Filter Replacement Primary

1. Relieve the fuel system pressure.
2. Remove the fuel filter from the fuel filter head.

Important: If the fuel filter is plugged, inspect the fuel tank internally and clean if necessary.

3. Inspect the fuel filter.
4. If the filter and filter head require removal, perform steps 5-6.



5. Disconnect the fuel lines from the fuel filter head.



6. Remove the fuel filter head bolts and the fuel filter head from the fuel filter head bracket.

1. If required, install the fuel filter head by performing the following:

1.1.	Install the fuel filter head to the fuel filter head bracket with the bolts.

1.2.	Connect the fuel lines to the fuel filter head.

2. Install the fuel filter.
3. Inspect for leaks.

Fuel Filter Replacement Secondary

1. Loosen the drain plug (6) to drain the fuel from the fuel filter (2).
2. Unscrew the drain plug to remove the plug and the O-ring (5) from the cap (4).
3. Unscrew the cap to remove it and the O-ring (3) from the filter.
4. Remove the filter cartridge from the filter head (1).
5. Check the filter for clogging. If the filter is clogged, check the primary filter. Replace the primary filter if necessary.
6. Check the filter head contact surface for cracks and pitting. Replace the head if necessary.




Important: If head replacement is necessary, perform Steps 7, 8, and 9. If it is not necessary, go to Step 10.

7. Disconnect the electrical connector at the filter head.
8. Remove the clips (2) and (5).
9. Remove the fuel hoses (3) and (6) and the fuel pipes (4) and (7).



10. Remove the fuel filter (3) and the fuel filter head (1) from the fuel filter head bracket (2).



11. Remove the bolts (1) securing the fuel filter head bracket (2) to the fuel filter bracket (4).
12. Remove the head bracket.
13. Remove the nuts (3) securing the fuel filter bracket to the exhaust gas recirculation (EGR) valve (5).
14. Remove the fuel filter bracket from the EGR valve.

1. If necessary, install the fuel filter head bracket (2) to the fuel filter bracket (4).



2. Install the fuel filter head (1) to the fuel filter bracket (2).



3. Set the fuel filter cartridge (2) to the fuel filter head (1). Hand tighten the cartridge until the O-ring and the cartridge surfaces meet.

Notice: Refer to Fastener Notice in the Preface section.

4. Use a wrench to further tighten the cartridge an additional 2/3 of a turn.

If you are using a torque wrench:

Tighten
Tighten the cartridge to 13 N·m (9.6 lb ft).

5. Install the O-ring (3) to the cap (4).
6. Install the cap and the O-ring to the cartridge.
7. Install the O-ring (5) to the drain plug (6).
8. Install the drain plug and O-ring to the cap.



9. Install the fuel lines (4) and (7) to the fuel filter head. Ensure the clips are secure.
10. Connect the electrical connector to the filter head.
11. Prime the fuel system. Refer to Fuel System Bleeding .
12. Inspect for leaks.