Eaton Fuller Transmission Air Filter/Regulator Element Cleaning

m2+ m 26.06.000

Note: Eaton Fuller FS/FO and T/TX transmissions do not have an air filter/regulator element that can be serviced.

Warning: Exhaust the air supply before servicing the air filter/regulator; otherwise, serious personal injury and component damage could result.

  1. Exhaust the air from the air reservoirs.
  2. Clean the outside of the air filter/regulator with cleaning solvent, then let it air dry. See Fig..

    Note:  Location of the air filter/regulator will vary depending on transmission model.

    Fig. 1, Eaton Fuller Transmission Air Filter/Regulator Location

  3. Remove the end cap, large O-ring, and filter element from the filter housing. See Fig.. Remove the small O-ring from the end cap.

    1. Air Regulator

    2. Housing

    3. Large O-Ring

    4. Filter Element

    5. Small O-Ring

    6. End Cap

    7. Plug

    Fig. 2, Eaton Fuller Transmission Air Filter/Regulator Components

    4. Note: Do not remove, disassemble, or adjust the air regulator. If the air regulator is not keeping the air pressure between 57 to 62 psi (396 to 431 kPa), replace the air filter/regulator. It cannot be repaired.

  4. Clean the filter element.
    1. Dip the filter element in alcohol or other cleaning solvent. Blow compressed air through the filter element (inside to outside) to loosen surface dirt and to dry the element. The sintered metallic filter element will last the life of the vehicle, provided it is not damaged.
    2. Wipe out the filter housing with a clean, dry, lint-free rag.
  5. Clean and inspect the O-rings and the end cap. Replace any parts that are damaged.
  6. Install the large O-ring, then the filter element (small end first) into the filter housing.
  7. Install the small O-ring in the end cap, then install the end cap on the filter housing. Tighten the end cap until firm.
  8. Start the engine, and build pressure in the air system. Check for air leaks at the filter housing and air line connections, and repair any leaks.

    Notice: Repair any air leaks. A leaking air filter or air lines can cause slow or hard shifting of the transmission, and eventual transmission damage.
    Note:
    Parent topic: Transmission
    Document Number: 0000121934
    Manual Publication Date: 2025-02-11
    Topic Publication Date: 2024-11-06