Chevrolet Silverado / GMC Sierra. Service manual — part 1429

Fig. 107: Adjusting Nut & J 2222-C
Courtesy of GENERAL MOTORS CORP.

15. Install the adjusting nut to the hub using the J 2222-C .

16. Adjust the wheel bearings. Refer to Wheel Bearing Adjustment.

17. Install the axle shaft. Refer to Rear Axle Shaft and/or Gasket Replacement.

18. Install the brake caliper bracket. Refer to Rear Brake Caliper Bracket Replacement

(JH6, JH7) or Rear Brake Caliper Bracket Replacement (JD9) .

19. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .

20. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Rear Axle

Lubricant Level Inspection (11.5 Inch Axle) or Rear Axle Lubricant Level Inspection
(8.6, 9.5 LD Axle) or Rear Axle Lubricant Level Inspection (10.5 Inch Axle).

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

21. Lower the vehicle.

DRIVE PINION FLANGE/YOKE AND/OR OIL SEAL REPLACEMENT (ALL EXCEPT 9.75 INCH
INCH AXLE)

Tools Required

J 8614-01 Flange/Pulley Holding Tool

J 22388 Rear Axle Pinion Oil Seal Installer - Rear (8. See Special Tools.6 inch, 9.5 inch
axle)

J 44414 Rear Axle Pinion Oil Seal Installer (10. See Special Tools.5 inch, 11.5 inch axle)

Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the tire and wheel assemblies (8.6 inch, 9.5 inch axles). Refer to Tire and Wheel

Removal and Installation .

3. Remove the rear brake calipers (8.6 inch, 9.5 inch axles). Refer to Rear Brake Caliper

Replacement (JH6, JH7) or Rear Brake Caliper Replacement (JD9) .

4. Remove the brake rotors (8.6 inch, 9.5 inch axles). Refer to Rear Brake Rotor

Replacement (JD9) or Rear Brake Rotor Replacement (JH6) or Rear Brake Rotor
Replacement (JH7) .

5. Remove the axle shafts (10.5 inch, 11.5 inch axle). Refer to Rear Axle Shaft and/or

Gasket Replacement.

IMPORTANT: Observe and mark the positions of all the driveline

components, relative to the propeller shaft and the axles,
prior to disassembly. These components include the
propeller shafts, drive axles, pinion flanges, output shafts,
etc. Reassemble all the components in the exact places in
which you removed the parts. Follow any specifications,
torque values, and any measurements made prior to
disassembly.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 108: Identifying Driveshaft Pinion, Yoke Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

6. Reference mark the rear propeller shaft (3) to the rear axle pinion yoke (4).

7. Disconnect the propeller shaft from the axle.

Wrap the bearing caps with tape in order to prevent the loss of bearing rollers.

Support the propeller shaft as necessary.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 109: Measuring Pinion Rotating Torque
Courtesy of GENERAL MOTORS CORP.

8. Measure the amount of torque required to rotate the pinion. Use an inch-pound torque

wrench. Record this measurement for reassembly. This will give the combined preload for
the following components:

The pinion bearings

The pinion pilot bearing (10.5 inch axle)

The pinion oil seal

The differential case bearings

The axle bearings (8.6 inch, 9.5 inch axles)

The axle seals (8.6 inch, 9.5 inch axles)

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado