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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Rear Drive Axle) >> Repair Instructions >> Differential Replacement (8.6 Inch Axle) >> Removal Procedure

Removal Procedure

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IMPORTANT: Group and mark the shims together as originally removed. If you remove or replace the ring and pinion gear set, perform the bearing preload, backlash, and gear tooth contact pattern check in order to ensure proper contact of the gears. If you reinstall or replace the differential carrier without replacing any other component (i.e. pinion and ring gear set, bearings. etc.) then you may reinstall the carrier with the original shims in their original locations. Always perform a gear tooth contact pattern check, even when you remove only the carrier.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the axle shafts. Refer to Rear Axle Shaft Replacement .
  3. Fig 1: Pinion Shaft Touching Housing
    GM156411Courtesy of GENERAL MOTORS CORP.
  4. Install the pinion shaft into the differential case part way and rotate the differential assembly until the pinion shaft contact the top of the axle housing.
  5. Rotate the drive pinion clockwise in order to force the differential assembly out of the axle housing.
  6. Remove the differential assembly.
  7. IMPORTANT: Mark the cups and shims left and right and in the proper order as necessary. Place the cups and the shims with the bearing caps.
  8. Remove the bearing cups, the shims, and the spacers as necessary.
  9. Remove the differential side bearings, if necessary. Refer to Differential Side Bearings Replacement .
  10. Remove the ring gear, if necessary. Refer to Drive Pinion and Ring Gear Replacement (10.5 Inch Axle)  or Drive Pinion and Ring Gear Replacement (8.6 Inch Axle) .