Drive Pinion Bearings Replacement (10.5 Inch Axle)
Drive Pinion Bearings Replacement (10.5 Inch Axle)
Tools Required
* J 22761 Differential Side Bearing Installer
* J 8614-01 Flange and Pulley Holding Tool
* J 37624 Pinon Bearing Installer
* J 24433 Pinion Cone and Side Bearing Installer
* J 22912-B Split Plate Bearing Puller
* J 44414 Rear Axle Pinion Oil Seal Installer
* J 8608 Rear Pinion Bearing Installer
* J 8092 Universal Driver Handle - 3/4 in - 10
Removal Procedure
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the differential assembly. Refer to Differential Replacement (8.6/9.5 Inch LD Axle) (Differential Replacement (8.6/9.5 Inch LD Axle))Differential Replacement (10.5 Inch Axle) (Differential Replacement (10.5 Inch Axle)) .
3. Remove the pinion gear bearing retainer. Refer to Drive Pinion Housing and/or Seal Replacement (Drive Pinion Housing and/or Seal Replacement) .
4. Remove the pinion yoke and the oil seal. Refer to Drive Pinion Housing and/or Seal Replacement (Drive Pinion Housing and/or Seal Replacement) .
5. Remove the outer pinion bearing.
6. Remove the pinion.
7. Remove the collapsible spacer.
8. Using the J 22912-B and a hydraulic press, remove the inner pinion bearing from the pinion.
Important: Insert the brass drift in the slots to remove the bearing cup.
Important: Move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
9. Using a hammer and a brass drift, remove the outer pinion bearing cup.
Important: Insert the brass drift in the slots to remove the bearing cup.
Important: Move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
10. Using a hammer and a brass drift, remove the inner pinion bearing cup.
11. Using a brass drift and a hammer, remove the pinion gear pilot bearing.
Installation Procedure
1. Using the J 22761 , install the pinion gear pilot bearing.
2. Using the J 37624 (2) and the J 8092 (1), install the inner pinion bearing cup in the pinion gear bearing retainer.
3. Using the J 8608 (2) and the J 8092 (1), install the outer pinion bearing cup in the pinion gear bearing retainer .
Important: Press the bearing on until the cone seats on the pinion.
4. Using the J 24433 and a hydraulic press, install the inner pinion bearing.
5. Install the new collapsible spacer.
6. Lubricate the pinion bearings with axle lubricant. Refer to Fluid and Lubricant Recommendations .
7. Install the outer pinion bearing into the pinion bearing retainer.
8. Using the J 44414 , install the new pinion oil seal .
9. Install the pinion in the pinion gear bearing retainer.
10. Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion yoke.
11. Align the marks made during removal.
12. Install the pinion yoke.
Notice: Refer to Pinion Flange/Yoke Installation Notice .
13. Using a soft-faced hammer, tap the pinion yoke until a few threads show through the yoke.
14. Install the washer and the new pinion nut.
15. Install the J 8614-01 on the pinion yoke.
Notice: Refer to Fastener Notice .
Important: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
16. Tighten the pinion nut while holding the J 8614-01 .
Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
17. Remove the J 8614-01 .
Important: Do not apply sealant to the pinion gear bearing retainer at this time.
18. Install the original shim to the pinion bearing retainer. If the original shim is not available, install a 0.41 mm (0.016 in) shim to build pinion depth.
19. Install the pinion gear bearing retainer to the axle housing.
20. Install the pinion bearing retainer bolts.
Tighten the pinion gear retainer bolts to 88 N.m (65 lb ft).
21. Using an inch-pound torque wrench, measure the rotating torque of the pinion.
The rotating torque of the pinion should be between 1.0-2.3 N.m (10-20 lb in) for used bearings, or 1.7-3.4 N.m (15-30 lb in) for new bearings .
22. If the rotating torque measurement is below 1.0 N.m (10 lb in) for used bearings, or 1.7 N.m (15 lb in) for new bearings, install the J 8614-01 and continue to tighten the pinion nut.
Tighten the pinion nut, in small increments, as needed, until the torque required in order to rotate the pinion is between 1.0-2.3 N.m (10-20 lb in) for used bearings, or 1.7-3.4 N.m (15-30 lb in) for new bearings.
23. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.
Recheck the rotating torque and adjust if necessary.
24. Install the differential assembly. Refer to Differential Replacement (8.6/9.5 Inch LD Axle) (Differential Replacement (8.6/9.5 Inch LD Axle))Differential Replacement (10.5 Inch Axle) (Differential Replacement (10.5 Inch Axle)) .
25. Adjust the differential side bearing preload. Refer to Differential Carrier Bearing Preload Adjustment (8.6 Inch Axle) (Differential Carrier Bearing Preload Adjustment (8.6 Inch Axle))Differential Carrier Bearing Preload Adjustment (9.5 Inch LD Axle) ()Differential Carrier Bearing Preload Adjustment (10.5 Inch Axle) (Differential Carrier Bearing Preload Adjustment (10.5 Inch Axle)) .
26. Determine the selective shim thickness for the drive pinion. Refer to Pinion Depth Adjustment (10.5 Inch Axle) (Pinion Depth Adjustment (10.5 Inch Axle))Pinion Depth Adjustment (8.6, 9.5LD Axle) (Pinion Depth Adjustment (8.6, 9.5LD Axle)) .
27. Adjust the backlash. Refer to Backlash Adjustment (8.6 Inch Axle) (Backlash Adjustment (8.6 Inch Axle))Backlash Adjustment (9.5 LD Axle) ()Backlash Adjustment (10.5 Inch Axle) (Backlash Adjustment (10.5 Inch Axle)) .
28. Fill the axle with lubricant. Refer to Rear Axle Lubricant Replacement (8.0/8.6 Inch Axle) (Rear Axle Lubricant Replacement (8.0/8.6 Inch Axle))Rear Axle Lubricant Replacement (10.5 Inch Axle) (Rear Axle Lubricant Replacement (10.5 Inch Axle)) .
29. Lower the vehicle.