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Tighten: Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion 17. Remove the J 8614-01 . 18. 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. 19. Install the pinion gear bearing retainer to the axle housing. 20. Install the pinion bearing retainer bolts. Tighten: Tighten the pinion gear retainer bolts to 88 N.m (65 lb ft). Fig. 178: Measuring Pinion Rotating Torque 21. Using an inch-pound torque wrench, measure the rotating torque of the pinion. IMPORTANT: Do not apply sealant to the pinion gear bearing retainer at this time.
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Specification: The rotating torque of the pinion should be between 1.0-2.3 N.m (10-20 lb 22. 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, install the J 8614-01 and continue to tighten the pinion nut. Tighten: Tighten the pinion nut, in small increments, as needed, until the torque required in 23. 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. 24. Install 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). 25. Adjust the differential side bearing preload. Refer to Differential Carrier Bearing Preload Adjustment (10.5 Inch, 11.5 Inch Axles) or Differential Carrier Bearing 26. Determine the selective shim thickness for the drive pinion. Refer to Pinion Depth Adjustment (10.5 Inch Axle) or Pinion Depth Adjustment (8.6, 9.5/9.5LD, and 11.5 27. Adjust the backlash. Refer to Backlash Adjustment (8.6 Inch Axle) or Backlash Adjustment (10.5, 11.5 Inch Axles) or Backlash Adjustment (9.5 LD Axle). 28. Fill the axle with 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 29. Lower the vehicle. DIFFERENTIAL REPLACEMENT (8.6, 9.5/9.5LD INCH AXLES) Tools Required J 24429 Side Bearing Backlash Spanner. See Special Tools. Removal Procedure IMPORTANT: Group and mark the shims together as originally removed. If you
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle . 2. Remove the axle shafts. Refer to Rear Axle Shaft Replacement (8.6 Inch Axle w/Drum Brake w/VSES) or Rear Axle Shaft Replacement (8.6 Inch Axle w/Drum Brakes w/o Fig. 179: Differential Bearing Adjuster Nut Lock 3. Remove the differential bearing adjuster nut lock (9.5/9.5LD inch axle - right side). remove or replace the ring and pinion gear set, perform the
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 180: Removing/Installing Bearing Cap Bolt 4. Remove the bearing cap bolts. 5. Remove the bearing caps. Mark the bearing caps left and right. CAUTION: Refer to Differential Case Removal Caution .
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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