Chevrolet Silverado / GMC Sierra. Manual — part 1445
Fig. 163: View Of Pinion Shaft & Pinion Yoke Alignment Marks
Courtesy of GENERAL MOTORS CORP.
12. Install the pinion yoke.
Align the marks made during removal.
13. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few
threads show through the yoke.
14. Install the washer and a new pinion nut.
NOTE:
Refer to Pinion Flange/Yoke Installation Notice .
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 164: Holding Pinion Yoke With Special Tool
Courtesy of GENERAL MOTORS CORP.
15. Install the J 8614-01 onto the pinion yoke as shown.
16. Tighten the pinion nut while holding the J 8614-01 .
Tighten: Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion
while tightening the nut to seat the bearings.
NOTE:
Refer to Fastener Notice .
IMPORTANT: If the rotating torque is exceeded, the pinion will have to be
removed and a new collapsible spacer installed.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 165: Measuring Pinion Rotating Torque
Courtesy of GENERAL MOTORS CORP.
17. Measure the rotating torque of the pinion using an inch-pound torque wrench.
Specification: 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.
18. 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, continue to tighten the pinion nut.
Tighten: 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.
19. 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.
20. Install the differential assembly. Refer to Differential Replacement (8.6, 9.5/9.5LD Inch
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Axles) or Differential Replacement (10.5 Inch, 11.5 Inch Axle).
21. Fill the axle with lubricant. Use the proper fluid. 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).
22. Lower the vehicle.
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. See Special Tools.
J 24433 Pinion Cone and Side Bearing Installer. See Special Tools.
J 22912-B Split Plate Bearing Puller
J 44414 Rear Axle Pinion Oil Seal Installer. See Special Tools.
J 8608 Rear Pinion Bearing Installer. See Special Tools.
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, 9.5/9.5LD
Inch Axles) or Differential Replacement (10.5 Inch, 11.5 Inch Axle).
3. Remove the pinion gear bearing retainer. Refer to 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.
5. Remove the outer pinion bearing.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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