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Installation Procedure

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  1. Install the ring gear, if necessary. Refer to DRIVE PINION AND RING GEAR REPLACEMENT (8.6 INCH, 9.5 INCH AXLE)  or DRIVE PINION AND RING GEAR REPLACEMENT (9.75 INCH AXLE)  or DRIVE PINION AND RING GEAR REPLACEMENT (10.5 INCH AXLE)  .
  2. Install the differential side bearings, if necessary. Refer to DIFFERENTIAL SIDE BEARINGS REPLACEMENT (ALL EXCEPT 9.75 INCH AXLE)  or DIFFERENTIAL SIDE BEARINGS REPLACEMENT (9.75 INCH AXLE)  .
  3. Lubricate the differential side bearings with axle lubricant. Use the proper fluid.
  4. Place the case, with the bearing cups installed, into the axle housing.

    Support the case in order to keep the case from falling out of the axle housing.

  5. Install the bearing caps and the bolts.

    Do not torque the bearing cap bolts at this time.

    Fig 1: Installing Differential - 10.5 Inch Axle (1 Of 3)
    G01456201Courtesy of GENERAL MOTORS CORP.
    Fig 2: Installing Differential - 10.5 Inch Axle (2 Of 3)
    G01456202Courtesy of GENERAL MOTORS CORP.
  6. Turn the adjusters evenly on each side using the J 24429  until snug against the differential.
  7. Adjust the differential side bearing preload. Refer to DIFFERENTIAL SIDE BEARING PRELOAD ADJUSTMENT (8.6 INCH AXLE)  or DIFFERENTIAL SIDE BEARING PRELOAD ADJUSTMENT (9.5 INCH AXLE)  or DIFFERENTIAL SIDE BEARING PRELOAD ADJUSTMENT (9.75 INCH AXLE)  or DIFFERENTIAL SIDE BEARING PRELOAD ADJUSTMENT (10.5 INCH AXLE)  .
  8. Adjust the backlash. Refer to BACKLASH ADJUSTMENT (ALL EXCEPT 9.75 INCH AXLE)  or BACKLASH ADJUSTMENT (9.75 INCH AXLE)  .
  9. Perform a gear tooth contact pattern check. Refer to GEAR TOOTH CONTACT PATTERN INSPECTION  .
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
    Fig 3: Installing Differential - 10.5 Inch Axle (3 Of 3)
    G01456203Courtesy of GENERAL MOTORS CORP.
  10. Tighten the bearing cap bolts.

    Tighten: 

    Tighten the bearing cap bolts to 185 N.m (136 lb ft).

  11. Install the axle shafts. Refer to REAR AXLE SHAFT AND/OR GASKET REPLACEMENT  .
  12. Install the rear axle housing cover. Refer to REAR AXLE HOUSING COVER AND GASKET REPLACEMENT  .
  13. Fill the axle with lubricant. Use the proper fluid. Refer to
  14. Lower the vehicle.
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