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21. Tighten differential bearing adjuster nut lock bolts. Tighten: Tighten the differential bearing adjuster nut lock bolts to 27 N.m (20 lb ft). 22. Measure the ring gear to pinion backlash and adjust, if necessary. Refer to Backlash Adjustment (8.6 Inch Axle) or Backlash Adjustment (10.5, 11.5 Inch Axles) or DIFFERENTIAL CARRIER BEARING PRELOAD ADJUSTMENT (8.6 INCH AXLE) Wedge Method Tools Required J 22779 Side Bearing Backlash Gage. See Special Tools. J 25588 Side Bearing Shim Installer. See Special Tools. Adjustment 1. Install the drive pinion, if necessary. Refer to Drive Pinion and Ring Gear Replacement (8.6, 9.5/9.5LD, and 11.5 Inch Axles) or Drive Pinion and Ring Gear Replacement 2. Measure the rotating torque of the drive pinion using an inch-pound torque wrench. Record the measurement. Specification: The rotating torque of the drive pinion should be 1.7-3.4 N.m (15-30 lb in) IMPORTANT: The differential side bearing preload adjustment must be In order to maintain the original backlash, adjust the Measure the service shims and the spacers one at a time. Do not use or reuse the original cast iron production shims.
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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