Differential Axle Housing: Service and Repair

Differential Housing Support Bushing Replacement

Tools Required

* J 9519-E Lower Ball Joint Remover and Installer.
* J 21474-01 Control Arm Bushing Set

Removal Procedure

1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the rear differential.
3. Remove the rear frame.





Important: The differential bushing is not fully seated in the bore and has voids that are in the horizontal position. Note and mark the position of the bushing prior to removal and press the new bushing into the same position.

4. Install J 9519-E and J 21474-01 to the rear differential bushing.
5. Using J 9519-E and J 21474-01 remove the rear differential bushing.





Important: The differential mount bushings need to be pressed in and out evenly from the frame. Side to side movement is not tolerable. Carefully press the differential mount bushing out of the frame.

6. Remove the differential mount bushing and discard

Installation Procedure





Important: The differential mount bushings need to be installed without lubricant.

1. Ensure the frame pilot hole and the differential mount bushing is free from lubricant or any foreign contaminants.

Important: The differential bushing is not fully seated in the bore and has voids that are in the horizontal position. Note and mark the position of the bushing prior to removal and press the new bushing into the same position.

2. Install a new differential mount bushing to the rear of the frame.




3. Install J 9519-E and J 21474-01 to the rear differential bushing.
4. Using J 9519-E and J 21474-01 press the bushing into the frame.
5. Remove J 9519-E and J 21474-01 from the bushing.
6. Repeat the above steps for the additional bushing.
7. Install the rear frame.
8. Install the rear differential assembly.