Checking the Oil-Filled Hubs Oil Level, Tag Axle

rv mm 35.04.000

Warning: Be careful not to overfill the hubs. Overfilling may cause oil to be forced out of the hubs and to contaminate the brake linings and other brake components. This could result in loss of vehicle control and lead to personal injury and property damage.

  1. With the vehicle on a level surface, remove the hub cap (also referred to as a beauty ring). See Fig..
    1. Cap Head

    2. Hub Cap (Beauty Ring)

    Fig. 1, Rear Axle Hub Cap Assembly

  2. Rotate the rear wheels and allow the oil in the hubs to settle.
  3. Chock the tires.
  4. Important: The oil level should be at, or no more than 1/4 inch (6 mm) above the level indicators on the hub caps.

  5. If necessary, remove the filler caps (in the ends of the hub caps) and add enough oil (80W–90 hypoid gear oil) to bring the oil to the proper level.
  6. Rotate the wheels, allow the oil to settle, and check the levels again.
  7. Install the filler caps securely.
  8. Notice: Do not overtighten the cap head. Too much force will strip the screw.

  9. Install the hub cap and tighten the cap head just until snug.
Note:
Document Number: 0000120615
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-11-13