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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 >> Rear Axle Shaft Replacement (9.5 HD Axle) >> Installation Procedure

Installation Procedure

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    Fig 1: Axle Shaft Housing & Components
    GM391222Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Carefully insert the axle shaft in order to not damage the seal.
  1. Install the axle shaft (1) into the rear axle housing (5).
  2. Slide the axle shaft (1) into place allowing the splines to engage the differential side gear.
  3. On axles without a locking differential, place the lock (4) on the button end of the axle shaft (1).
  4. On axles with a locking differential, keep the pinion shaft partially withdrawn.
    5. Fig 2: View Of Axle Shaft, Lock & Thrust Block
    GM156412Courtesy of GENERAL MOTORS CORP.
  5. On axles with a locking differential, place the C-lock (1) on the axle shaft (3) so that the ends are flush with the thrust block (2).
  6. Pull the shaft flange outward in order to seat the lock in the differential gear.
    7. Fig 3: View Of Pinion Shaft Locking Bolt
    GM156409Courtesy of GENERAL MOTORS CORP.
  7. Align the hole in the pinion shaft with the bolt hole in the differential case.
    8. NOTE: Refer to Fastener Notice .
  8. Install the new pinion shaft locking bolt.

    Tighten:  Tighten the pinion shaft locking bolt to 50 N.m (37 lb ft).

  9. Install the rear cover and the gasket. Refer to Rear Axle Housing Cover and Gasket Replacement .
  10. Install the brake caliper. Refer to Rear Brake Caliper Replacement (1500 Series) or Rear Brake Caliper Replacement (2500 Series) .
  11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  12. Fill the rear axle. Use the proper fluid. Refer to Capacities - Approximate Fluid and Fluid and Lubricant Recommendations .
  13. Lower the vehicle.
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