Drive Pinion and Ring Gear Replacement (8.6 Inch Axle)

Drive Pinion and Ring Gear Replacement (8.6 Inch Axle)

Tools Required

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 pinion yoke and the 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. Install the J 22536 as shown.
Ensure that the J 22536 is firmly seated on the pinion.
5. 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.




6. Remove the collapsible spacer from the pinion. Discard the spacer.
7. Remove the pinion bearings and the cups. 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 left-hand threads.


8. Remove the ring gear bolts. Discard the bolts.





Notice: Refer toRing Gear Removal Notice .

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



Installation Procedure


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






1. Install the ring gear to the differential case.





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


2. 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 .

3. Tighten the ring gear bolts. Tighten the ring gear bolts alternately and in stages, gradually pulling the ring gear onto the differential case.

Tighten the ring gear bolts in sequence to 120 N.m (89 lb ft).

4. Install the pinion bearing cups. 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)) .
5. Determine the selective shim thickness for the 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)) .
6. Install the selective shim onto the pinion.
7. Install the inner pinion bearing to the pinion. 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)) .
8. Install a new collapsible spacer.
9. Lubricate the pinion bearings with axle lubricant. Refer to Fluid and Lubricant Recommendations .
10. Install the outer pinion bearing into the axle housing.
11. Install the new 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)) .
12. Install the pinion into the axle housing.
13. Install the pinion yoke. 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)) .
14. 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)) .
15. 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)) .
16. Lower the vehicle.