Drive Pinion and Ring Gear Replacement (9.75 Inch Axle)

Rear Differential


Drive Pinion and Ring Gear Replacement (9.75 Inch Axle)

^ Tools Required
- J 22536 Pinion Driver

Removal Procedure
1. Raise the vehicle. Refer to Vehicle Lifting.
2. Remove the differential assembly.
3. Remove the drive pinion yoke and the pinion oil seal.





4. Remove the thrust washer.





5. Install the J 22536 as shown. Ensure that the J 22536 is firmly seated on the pinion.
6. Drive the pinion out using the J 22536 and a hammer. Strike the J 22536 slowly. Do not let the pinion fall out of the rear axle housing.
7. Remove the pinion preload shims from the drive pinion and set aside.
8. Remove the inner pinion bearing and the pinion position shim.





9. Remove the ring gear bolts. Discard the bolts.

Important: The ring gear bolts have right-hand threads.






10. Remove the ring gear from the differential case. Drive the gear off with a brass drift if necessary.

Notice: Refer to Ring Gear Removal Notice in Service Precautions.


Installation Procedure
1. Determine the pinion position shim thickness and the pinion preload shim thickness for the drive pinion gear.





2. Install the ring gear to the differential case. Align the holes in the differential case to the bolts holes in the ring gear.

Important: The mating surface of the ring gear and the differential case must be clean and free of burrs before installing the ring gear.






3. Install the new ring gear bolts. Hand start each bolt to ensure that the ring gear is properly installed to the differential case.

Important: The ring gear bolts have right-hand threads.


4. Tighten the new ring gear bolts. Tighten the ring gear bolts alternately and in stages, gradually pulling the ring gear onto the differential case.
^ Tighten the new ring gear bolts to 178 Nm (131 ft. lbs.).

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the differential assembly.
6. Fill the axle with lubricant. Use the proper fluid.
7. Lower the vehicle.