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Home >> Hummer >> 2007 >> H3 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Rear Drive Axle) >> Repair Instructions >> Differential Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  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 in Maintenance and Lubrication.
    4. Fig 1: Installing J 45222 Onto Axle Housing
    GM788484Courtesy of GENERAL MOTORS CORP.
  4. Install the J 45222  onto the axle housing as shown.
    5. Fig 2: View Of J 8001-1, J 8001-2, J 34178 & J 8001-3
    GM788485Courtesy of GENERAL MOTORS CORP.
  5. Install the J 8001-1 (2), the J 8001-2 (3), the J 34178  (4, 6), and the J 8001-3 (5) as shown.
  6. Preload the J 8001-3 (5) approximately 3/4 of a turn clockwise.
  7. Rotate the indicator housing to align the indicator needle of the J 8001-3 (5) and the dial indicator face to ZERO.
  8. Spread the axle housing by turning the clevis screw of the J 34178  while observing the J 8001-3.

    Spread the housing just enough to install the differential assembly. Do not spread the housing more than 1.02 mm (0.040 in).

    9. Fig 3: View Of Differential Case And Axle Housing
    GM667660Courtesy of GENERAL MOTORS CORP.
  9. 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.

    10. Fig 4: View Of Bearing Caps Bolts
    GM788491Courtesy of GENERAL MOTORS CORP.
  10. Install the bearing caps and the bolts.

    Do not torque the bearing cap bolts at this time.

  11. Adjust the differential side bearing preload. Refer to Differential Side Bearing Preload Adjustment .
  12. Adjust the backlash. Refer to Backlash Adjustment .
  13. Perform a gear tooth contact pattern check. Refer to Gear Tooth Contact Pattern Inspection .
    14. NOTE: Refer to Fastener Notice in Cautions and Notices.
  14. Tighten the bearing cap bolts.

    Tighten:  Tighten the bearing cap bolts to 75 N.m (55 lb ft).

  15. Install the axle shafts. Refer to Rear Axle Shaft Replacement .
  16. Install the spare tire.
  17. Lower the vehicle.
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