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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Rear Drive Axle) >> Repair Instructions >> Differential Replacement >> Installation Procedure

Installation Procedure

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  1. Install the ring gear, if necessary. Refer to Drive Pinion and Ring Gear Replacement .
  2. Install the differential side bearings, if necessary. Refer to Differential Side Bearings Replacement .
  3. Lubricate the differential side bearings with axle lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations .
    4. Fig 1: View Of Differential Case & Axle Housing
    GM667660Courtesy of GENERAL MOTORS CORP.
  4. Place the case, with the bearing cups installed, into the axle housing.

    Support the case in order to keep the case from falling out of the axle housing.

    5. Fig 2: Identifying Bearing Cap Bolt
    GM667502Courtesy of GENERAL MOTORS CORP.
  5. Install the bearing caps and the bolts. Do not torque the bearing cap bolts at this time.
  6. Adjust the differential side bearing preload. Refer to Differential Side Bearing Preload Adjustment (8.6 Inch Axle)  or Differential Side Bearing Preload Adjustment (9.5, 9.5LD Inch Axles) .
  7. Adjust the backlash. Refer to Backlash Adjustment (8.6 Inch Axle)  or Backlash Adjustment (9.5 Inch Axle) .
  8. Perform a gear tooth contact pattern check. Refer to Gear Tooth Contact Pattern Inspection .
    9. NOTE: Refer to Fastener Notice .
  9. Tighten the bearing cap bolts.

    Tighten:  Tighten the bearing cap bolts to 85 N.m (63 lb ft).

  10. Install the axle shafts. Refer to Rear Axle Shaft Replacement (8.6, 9.5 LD Axle)  or Rear Axle Shaft Replacement (9.5 HD Axle) .
  11. Fill the axle with the proper lubricant. Refer to Lubricant Replacement - Rear Drive Axle (8.6 Inch Axle)  or Lubricant Replacement - Rear Drive Axle (9.5 Inch LD Axle)  or Lubricant Replacement - Rear Drive Axle (9.5 Inch HD Axle) .
  12. Lower the vehicle.
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