Drive Pinion and Ring Gear Replacement (9.75, 10.5 and 10.75 Inch Axles)

Drive Pinion and Ring Gear Replacement (9.75, 10.5 and 10.75 Inch Axles)

Special Tools

J 22536 Pinion Driver


Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the differential assembly. Refer to Differential Replacement (8.6 Inch Axle) (Differential Replacement (8.6 Inch Axle))Differential Replacement (9.75, 10.5 and 10.75 Inch Axles) (Differential Replacement (9.75, 10.5 and 10.75 Inch Axles)) .
3. Remove the drive pinion yoke and the pinion oil seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement (8.6 Inch Axle) (Drive Pinion Flange/Yoke and/or Oil Seal Replacement (8.6 Inch Axle))Drive Pinion Flange/Yoke and/or Oil Seal Replacement (9.75, 10.5 and 10.75 Inch Axles) (Drive Pinion Flange/Yoke and/or Oil Seal Replacement (9.75, 10.5 and 10.75 Inch Axles)) .




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. Refer to Drive Pinion Bearings Replacement (8.6 Inch Axle) (Service and Repair)Drive Pinion Bearings Replacement (9.75, 10.5 and 10.75 Inch Axles) (Drive Pinion Bearings Replacement (9.75, 10.5 and 10.75 Inch Axles)) .





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


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





Notice: Refer to Ring Gear Removal Notice .

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



Installation Procedure

1. Determine the pinion position shim thickness and the pinion preload shim thickness for the drive pinion gear. Refer to Pinion Depth Adjustment (8.6 Inch Axle) (Pinion Depth Adjustment (8.6 Inch Axle))Pinion Depth Adjustment (9.75, 10.5 and 10.75 Inch Axles) (Pinion Depth Adjustment (9.75, 10.5 and 10.75 Inch Axles)) .





Important: The mating surface of the ring gear and the differential case must be clean and free of burrs before installing the ring 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 ring gear bolts have right-hand threads.






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

Notice: Refer to Fastener Notice .

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 177 N.m (131 lb ft).

5. Install the differential assembly. Refer to Differential Replacement (8.6 Inch Axle) (Differential Replacement (8.6 Inch Axle))Differential Replacement (9.75, 10.5 and 10.75 Inch Axles) (Differential Replacement (9.75, 10.5 and 10.75 Inch Axles)) .
6. Fill the axle with lubricant. Use the proper fluid. Refer to Rear Axle Lubricant Replacement (8.6 Inch Axle) (Rear Axle Lubricant Replacement (8.6 Inch Axle))Rear Axle Lubricant Replacement (9.75, 10.5 and 10.75 Inch Axles) (Rear Axle Lubricant Replacement (9.75, 10.5 and 10.75 Inch Axles)) .
7. Lower the vehicle.