Drive Pinion Bearings Replacement (8.6 Inch Axle)
Drive Pinion Bearings Replacement (8.6 Inch Axle)
Special Tools
* DT 49032 - Pinion Bearing Cup Installer
* DT 49275 - Pinion Bearing Remover
* J 8092 - Universal Driver Handle 3/4 in-10
* J 22828 - Input Shaft Gear Installer
* J 22912-B - Bearing Remover
* J 28677 - Needle Bearing Installer
Disassemble Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).
2. Remove the differential assembly. Refer to Differential Replacement (Differential Replacement).
3. Remove the differential drive pinion gear from the axle. Refer to Drive Pinion and Ring Gear Replacement (Rear Drive Axle).
4. Using the DT 49275 - remover and the J 22912-B - puller , remove the differential drive pinion gear bearing and the spacer.
Note: Position the brass drift in the slots provided in the axle housing. Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly.
5. Using a hammer and a brass drift, remove the outer differential drive pinion gear bearing cup.
Note: Position the brass drift in the slots provided in the axle housing. Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly.
6. Using a hammer and a brass drift, remove the inner differential drive pinion gear bearing cup.
Assemble Procedure
1. Using the J 28677 - installer (1) and the J 8092 - handle (2), install the outer differential drive pinion gear bearing cup.
2. Using the DT 49032 - installer
(1) and the J 8092 - handle (2), install the inner differential drive pinion gear cup.
3. Determine the selective spacer thickness for the pinion. Refer to Pinion Depth Adjustment (8.0 Inch Axle) (Pinion Depth Adjustment (8.0 Inch Axle))Pinion Depth Adjustment (8.6 Inch Axle) (Pinion Depth Adjustment (8.6 Inch Axle)).
4. Install the selective pinion spacer (1) on the pinion gear (2).
5. Using the J 22828 - installer and a hammer, install the differential drive pinion gear bearing and the spacer.
Note: Use the proper fluid.
6. Lubricate the pinion bearings with axle lubricant. Refer to Adhesives, Fluids, Lubricants, and Sealers (Fluid Type Specifications).
7. Install the differential drive pinion gear outer bearing into the axle housing.
8. Install the differential drive pinion gear into the axle housing.
9. Install the NEW differential drive pinion gear seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement (Rear Drive Axle).
10. Install the differential assembly. Refer to Differential Replacement (Differential Replacement).
11. Fill the axle with lubricant. Use the proper fluid. Refer to Rear Axle Lubricant Replacement (8.0 Inch Axle) (Rear Axle Lubricant Replacement (8.0 Inch Axle))Rear Axle Lubricant Replacement (8.6 Inch Axle) (Rear Axle Lubricant Replacement (8.6 Inch Axle)).
12. Remove the support and lower the vehicle.