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Chevrolet Silverado / GMC Sierra. Manual - part 1440
22. Install the pinion gear bearing retainer bolts.
Tighten: Tighten the pinion gear bearing retainer bolts to 88 N.m (65 lb ft).
Fig. 147: Measuring Pinion & Ring Gear Rotating Torque
Courtesy of GENERAL MOTORS CORP.
23. Measure the rotating torque of the pinion and the ring gear. Compare this measurement with
the rotating torque recorded during removal.
Specification: The rotating torque of the drive pinion and the differential assembly should
be 0.57-1.13 N.m (5-10 lb in) greater than the rotating torque of the drive pinion measured
earlier.
24. If the rotating torque of the pinion and the ring gear is not within specifications, adjust the
preload of the pinion or the differential side bearings as necessary.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 148: Identifying Driveshaft Pinion, Yoke Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.
25. Install the propeller shaft (3) to the pinion yoke (4).
Align the reference marks made during removal.
26. Install the propeller shaft yoke retaining clamps and the bolts.
Tighten: Tighten the propeller shaft yoke retaining clamp bolts to 25 N.m (18 lb ft).
27. Install the axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement.
28. Fill the axle with axle lubricant. Refer to Rear Axle Lubricant Replacement (8.6 Inch
Axle) or Rear Axle Lubricant Replacement (9.5 Inch LD Axle) or Rear Axle
Lubricant Replacement (10.5 Inch Axle).
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
29. Lower the vehicle.
DRIVE PINION AND RING GEAR REPLACEMENT (8.6, 9.5/9.5LD, AND 11.5 INCH AXLES)
Tools Required
J 22536 Pinion Driver, 8. See Special Tools.6 inch, 9.5/9.5LD inch axles
J 44421 Pinion Remover, 11. See Special Tools.5 inch axle
Removal Procedure
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the differential assembly. Refer to Differential Replacement (8.6, 9.5/9.5LD
Inch Axles) or Differential Replacement (10.5 Inch, 11.5 Inch Axle).
3. Remove the pinion yoke and the oil seal. Refer to Drive Pinion Flange/Yoke and/or Oil
Seal Replacement (All Except 9.75 Inch Axle) or Drive Pinion Flange/Yoke and/or
Oil Seal Replacement (8.6 Inch Axle w/Drum Brakes).
Fig. 149: Installing J 22536 Or J 44421 On Pinion
Courtesy of GENERAL MOTORS CORP.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
4. Install the J 22536 , 8. See Special Tools.6 inch or 9.5/9.5LD inch axle, or the J 44421 ,
11. See Special Tools.5 inch axle as shown.
Ensure that the J 22536 or the J 44421 is firmly seated on the pinion. See Special Tools.
5. Drive the pinion out using the J 22536 or the J 44421 and a hammer. See Special Tools.
Strike the J 22536 or the J 44421 slowly. See Special Tools. Do not let the pinion fall out
of the rear axle housing.
Fig. 150: View Of Collapsible Spacer & Pinion
Courtesy of GENERAL MOTORS CORP.
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, 9.5, 11.5 Inch Axle) or Drive Pinion Bearings Replacement (10.5 Inch Axle).
8. Remove the gear bolts. Discard the bolts.
IMPORTANT: The ring gear bolts on the 8.6 inch and the 9.5/9.5LF inch
axles have left-hand threads. The ring gear bolts on the 11.5
inch axle have right-hand threads.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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