Installation Procedure
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- Position the drive pinion gear pilot bearing (1) in the differential housing (2).
- Using the J 22761 installer (1) and the J 8092 handle (2), install the drive pinion gear pilot bearing in the differential housing (3).
- Using the J 37624 installer (2) and the J 8092 handle (1), install the inner pinion bearing cup in the pinion gear bearing retainer.
- Using the J 8608 Pinion Bearing Cup Installer (2) and the J 8092 handle (1), install the outer pinion bearing cup in the pinion gear bearing retainer.
- Using the J 24433 installer and a hydraulic press, install the inner pinion bearing.
- Install the new collapsible spacer.
- Lubricate the pinion bearings with axle lubricant. Refer to Fluid and Lubricant Recommendations .
- Install the outer pinion bearing into the pinion bearing retainer.
- Using the J 44414 installer, install the new pinion oil seal.
- Install the pinion in the pinion gear bearing retainer.
- Install the drive pinion flange/yoke. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement
- 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.
- Install the pinion gear bearing retainer to the axle housing. Refer to Drive Pinion Housing and/or Seal Replacement
- Using an inch-pound torque wrench, measure 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.
- 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, use the J 8614-01 holding tool and continue to tighten the pinion nut, in small increments, as needed, until the rotating torque 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.
- 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.
- Install the differential assembly. Refer to Differential Replacement (10.5 Inch Axle) , Differential Replacement (8.6, 9.5/9.5 LD Inch Axles) .
- Adjust the differential side bearing preload. Refer to Differential Carrier Bearing Preload Adjustment (8.6 Inch Axle) , Differential Carrier Bearing Preload Adjustment (9.5LD Inch Axle) , Differential Carrier Bearing Preload Adjustment (10.5 Inch Axle) .
- Adjust the drive pinion gear pinion depth, if needed. Refer to Pinion Depth Adjustment (9.5LD Inch Axle) , Pinion Depth Adjustment (10.5 Inch Axle) , Pinion Depth Adjustment (8.6 Inch Axle) .
- Adjust the backlash. Refer to Backlash Adjustment (10.5 Inch Axle) , Backlash Adjustment (9.5 LD Axle) , Backlash Adjustment (8.6 Inch Axle) .
- Fill the axle with lubricant. Refer to Differential Oil Replacement (8.6 Inch Axle) , Differential Oil Replacement (10.5 Inch Axle) , Differential Oil Replacement (9.5LD Inch Axle) .
- Remove the support and lower the vehicle.
NOTE:
Ensure that the drive pinion gear pilot bearing is as square as possible in the differential housing before installation.
NOTE:
Press the bearing on until the cone seats on the pinion.
NOTE:
Do not apply sealant to the pinion gear bearing retainer at this time.