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Home >> Hummer >> 2007 >> H3 Automatic >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Drive Axle >> Repair Instructions >> Differential Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of Rear Axle Assembly
    GM941584Courtesy of GENERAL MOTORS CORP.
  1. With the aid of an assistant and using a transmission jack stand, install the rear drive axle assembly in the vehicle.
    2. Fig 2: View Of Rear Leaf Spring Shackles
    GM1829095Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  2. Install the leaf spring shackles.

    Tighten:  Tighten the shackle bolts and nuts to 85 N.m (63 lb ft).

  3. Remove the jack stands.
    4. Fig 3: View Of U-Bolt
    GM941629Courtesy of GENERAL MOTORS CORP.
  4. Position the U-bolts on the rear axle housing.
  5. Position the anchor plates on the leaf springs.
  6. Install the U-nuts.

    Tighten:  Tighten the nuts 76 N.m (56 lb ft).

  7. Install the bottom shock absorber nut and bolt.

    Tighten:  Tighten the nuts 95 N.m (70 lb ft).

    8. Fig 4: Locating Brake Line Retaining Clips
    GM1829085Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Always use a back up wrench when tightening the brake pipes.
  8. Install the brake pipes.

    Tighten:  Tighten the fitting to 19 N.m (14 lb ft).

  9. Install the retaining clips for the brake pipes.
    10. Fig 5: View Of Rear Leaf Spring Park Brake Cable Retaining Bolt
    GM1306332Courtesy of GENERAL MOTORS CORP.
  10. Install the retaining clips for the park brake cables at the rear leaf spring.

    Tighten:  Tighten the nuts to 20 N.m (15 lb ft).

    11. Fig 6: Locating Rear Speed Sensor Retaining Clips
    GM1829579Courtesy of GENERAL MOTORS CORP.
  11. Install the rear speed sensors retainers in the frame. Refer to Rear Wheel Speed Sensor Replacement .
  12. Reconnect the speed sensor electrical connector.
    13. Fig 7: Identifying Axle Housing Vent Hose
    GM1829844Courtesy of GENERAL MOTORS CORP.
  13. Install the vent hose on the axle housing.
    14. Fig 8: Locating Electronic Locking Differential Connector
    GM1829805Courtesy of GENERAL MOTORS CORP.
  14. Reconnect the electrical connector for the electronic locking differential, if equipped.
  15. Install the propeller shaft. Refer to Rear Propeller Shaft Replacement .
  16. Fill the rear axle housing with fluid. Refer to Rear Axle Lubricant Level Inspection .
  17. Remove the support stands.
  18. Lower the vehicle.
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