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Makes 🢒 GMC_Truck 🢒 2008 🢒 Savana - AWD 🢒 Preface 🢒 Cautions and Notices 🢒 Locking Differential Assemble

Locking Differential Assemble 10.5 Inch Axle

Important: The left and right side gear backlash and thrust block thickness measurement must be completed before the components of the differential can be assembled.


    Object Number: 873680 Size: SH
  1. Install the differential side gear shim into the right side or bell-end differential case half.

    2. Object Number: 873660 Size: SH
  2. Install the differential side gear clutch disc assembly into the right side or bell-end differential case half.

    3. Object Number: 873526 Size: SH
  3. Install the differential side gear into the right side or bell-end differential case half.

    4. Object Number: 873659 Size: SH
  4. Install the locking differential clutch disc thrust washer into the left side or flange-end differential case half.

    5. Object Number: 873522 Size: SH
  5. Install the locking differential cam unit and clutch disc assembly into the left side or flange-end differential case half.

    6. Object Number: 873520 Size: SH
  6. Install the governor assembly.

    7. Object Number: 873519 Size: SH
  7. Install the latching bracket and spring assembly.

    8. The straight end of the latching bracket spring must be over and outside the governor assembly shaft.


    Object Number: 873515 Size: SH
  8. Install the locking differential spider, the differential pinion gears, and the differential pinion gear thrust washers into the differential case.

    9. Object Number: 873514 Size: SH
  9. Install the thrust block.

    10. Object Number: 873512 Size: SH
  10. Install the right case half to the left case half.

    11. Hold the right side locking differential side gear and clutch disc assembly in the right side case half.

    Align the governor and latching bracket assembly shaft with the holes in the left case half.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 873510 Size: SH
  11. Install the differential case bolts.

    12. Tighten
    Tighten the differential case screws to 50 N·m (37 lb ft).

  12. Install the ring gear. Refer to Drive Pinion and Ring Gear Replacement .
  13. Install the differential side bearings. Refer to Differential Side Bearings Replacement .
  14. Install the differential assembly. Refer to Differential Replacement .

Locking Differential Assemble 8.6 Inch, 9.75 Inch Axles

Important: The left and right side gear backlash and thrust block thickness measurement must be completed before the components of the locking differential can be assembled.

  1. Measure the left and right side gear backlash and thrust block. Refer to Locking Differential Adjustment .

    2. Object Number: 790754 Size: SH
  2. Install the locking differential clutch disc thrust washer into the left side or flange-end of the differential case.

    3. Object Number: 790759 Size: SH
  3. Install the locking differential side gear cam unit and clutch disc assembly into the left side or flange-end of the differential case.
  4. Install the differential side gear shim into the right side or bell-end of the differential case.

    5. Object Number: 887833 Size: SH
  5. Install the differential side gear and clutch disc assembly into the right side or bell-end of the differential case.

    6. Object Number: 887714 Size: SH

    Important: If the original pinion gears and thrust washers are being re-used, install the pinion gears and thrust washers on the same side as when removed.

  6. Install the pinion gear and the pinion thrust washers.

    7. Place the pinion gears and the pinion thrust washers 180 degrees apart.

  7. Rotate the pinion gears and the pinion thrust washers 90 degrees and align the pinion gears with the pinion shaft opening in the differential case.

    8. Object Number: 887711 Size: SH
  8. Install the thrust block.

    9. The open side of the thrust block must face the window opening.


    Object Number: 887708 Size: SH
  9. Install the pinion shaft.

    10. Object Number: 887699 Size: SH
  10. Install the new pinion shaft lock bolt.

    11. Tighten the pinion shaft lock bolt finger tight.


    Object Number: 887695 Size: SH
  11. Install the governor assembly.

    12. Object Number: 887693 Size: SH
  12. Install the latching bracket assembly.

    13. The straight end of the latching bracket spring must be over and outside the governor assembly shaft.


    Object Number: 887844 Size: SH
  13. Install the latching bracket bushing.
  14. Install the governor assembly bushing.

    15. Object Number: 790767 Size: SH
  15. Drive the governor bushing into position using a hammer and a brass drift.

    16. Specification
    Press the bushing into place until there is 0.25-1.27 mm (0.010-0.050 in) of shaft end play.

  16. Drive the latching bracket bushing into position using a hammer and a brass drift.

    17. Specification
    Press the bushing into place until there is 0.000-0.051 mm (0.000-0.002 in) of shaft end play.

    Notice: Refer to Fastener Notice in the Preface section.

  17. Tighten the pinion shaft lock bolt.

    18. Tighten

        • For the 8.6 inch axle, tighten the pinion shaft lock bolt to 36 N·m (27 lb ft).
        • For the 9.75 inch axle, tighten the pinion shaft lock bolt to 27 N·m (20 lb ft).
  18. Install the ring gear. Refer to Drive Pinion and Ring Gear Replacement .
  19. Install the differential side bearings. Refer to Differential Side Bearings Replacement .
  20. Install the differential assembly. Refer to Differential Replacement .