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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (Rear Drive Axle) >> Repair Instructions >> Locking Differential Assemble

Locking Differential Assemble

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IMPORTANT:
  • If the same differential side gears and the thrust washers are being used, install the differential side gears and the thrust washers in their original locations.
  • The locking differential side gear and the differential side gear are not interchangeable. The side gears must be installed in the correct location in order for the locking differential to function properly.
  1. Measure the backlash of the pinion gears to differential side gear and locking differential side gear. Refer to Locking Differential Adjustment .
  2. Fig 1: Locking Differential Side Gear & Thrust Washer
    GM851735Courtesy of GENERAL MOTORS CORP.
  3. Install the differential side gear thrust washer to the locking differential side gear.
  4. Install the locking differential side gear and thrust washer into the ring gear side of the differential case.
  5. Fig 2: Differential Side Gears & Thrust Washers
    GM851734Courtesy of GENERAL MOTORS CORP.
  6. Install the differential side gear thrust washer to the differential side gear.
  7. Install the differential side gear and thrust washer into the bell side of the differential case.
  8. Fig 3: Identifying Differential Pinion Gears & Thrust Washers
    GM851732Courtesy of GENERAL MOTORS CORP.
  9. Install the differential pinion gears and thrust washers by doing the following:
    1. Position both pinion gears and thrust washers between the differential side gears.

      Place the pinion gears and thrust washers 180 degrees across from each other.

    2. Rotate the differential side gears until both pinion gears and thrust washers are directly opposite the opening in the differential case.

      Line up the pinion shaft opening in each of the pinion gears with the pinion shaft opening in the differential case.

  10. Fig 4: View Of Differential And Pinion Shaft
    GM851733Courtesy of GENERAL MOTORS CORP.
  11. Install the pinion shaft.
  12. Fig 5: View Of Pinion Shaft Lock Bolt
    GM851727Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  13. Install a new pinion shaft lock bolt.

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

  14. Fig 6: Locking Differential Clutch Springs
    GM851701Courtesy of GENERAL MOTORS CORP.
  15. Install the locking differential clutch springs.
  16. Fig 7: Locking Differential Clutch Spring Retainer & Differential Carrier Lock Pins
    GM851697Courtesy of GENERAL MOTORS CORP.
  17. Install the locking differential clutch spring retainer and the differential carrier lock pins.
  18. Fig 8: Inboard Locking Differential Ball Bearing Plate
    GM851654Courtesy of GENERAL MOTORS CORP.
  19. Install the inboard locking differential ball bearing plate.

    Place the inboard locking differential ball bearing plate on the three exposed differential clutch springs.

  20. Fig 9: Locking Differential Ball Bearings
    GM851649Courtesy of GENERAL MOTORS CORP.
  21. Install the locking differential ball bearings.
  22. Fig 10: Outboard Locking Differential Ball Bearing Plate
    GM851645Courtesy of GENERAL MOTORS CORP.
  23. Install the outboard locking differential ball bearing plate.
  24. Fig 11: Locking Differential Coil Plate
    GM851641Courtesy of GENERAL MOTORS CORP.
  25. Install the locking differential coil plate.
  26. Fig 12: Differential Bearing Race
    GM851633Courtesy of GENERAL MOTORS CORP.
  27. Install the locking differential coil assembly.
  28. Install the differential bearing race.
  29. Fig 13: Differential Bearing Retainer
    GM851631Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The differential bearing race must be compressed in order to install the differential bearing retainer.
  30. Install the differential bearing retainer by performing the following steps:
    1. Install the differential bearing retainer.
    2. With the aid of an assistant, push the differential bearing race down towards the differential case in order to compress the differential bearing retainer and differential coil assembly against the locking differential coil plate.
    3. Install the differential bearing retainer.

      Ensure the differential bearing retainer is evenly and fully seated in the differential bearing retainer slot before releasing the differential bearing race.

  31. Install the ring gear. Refer to Drive Pinion and Ring Gear Replacement .
  32. Install the differential side bearings. Refer to Differential Side Bearings Replacement .