Removal of the Final Filter

Removal of the Final Filter - Ops - DD5 - #8080

Remove the final filter as follows:

    Notice: The high pressure fuel pump is oil lubricated, which causes small amounts of oil to migrate into return fuel. It is normal for fuel filters to darken over time due to the presence of this oil.
  1. Shut off the engine, apply the parking brake, chock the wheels, and perform any other applicable safety steps.

    2. Caution: ELECTRICAL SHOCK

    To avoid injury from electrical shock, use care when connecting battery cables. The magnetic switch studs are at battery voltage.

  2. Disconnect the batteries. Refer to OEM procedures.
  3. Open the hood.
  4. Using a 36mm socket, unscrew the final filter cap.
    5. Notice: Do not tilt the final filter when removing it from the housing. Possible damage to the final filter or stand pipe may occur.
  5. Pull the cap and final filter (1) straight up and allow the fuel to drain back.
  6. Discard the final filter.
  7. Inspect inside the housing for any large debris; clean housing as needed.
  8. Discard final filter cap seal ring.
Note:
Parent topic: How to Replace the Fuel Filters
Document Number: 0000042633
Manual Publication Date: 2024-01-05
Topic Publication Date: 2025-12-03