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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1612 (Rear Drive Axle) >> Repair Instructions >> Differential Overhaul (10.5 Inch Axle) >> Disassembly Procedure

Disassembly Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the differential side bearings by performing the following steps:
    1. 1.1. Place a block of wood on each side of the differential case before installing the differential case into the vise.

      Install the differential assembly into a vise.

    2. 1.2. Install the J 8107-3  (1) and the J 22888-20A  (2) onto the differential side bearing.
    3. 1.3. Remove the differential side bearings using the J 22888-20A. 
      Fig 1: Ring Gear Bolts
      G01480804Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The ring gear bolts have left-hand threads.
  2. Remove the ring gear bolts.
    NOTE: Refer to RING GEAR REMOVAL NOTICE .
  3. Remove the ring gear from the differential case.

    Drive the ring gear off with a brass drift if necessary.

  4. Separate the differential case assembly.
    IMPORTANT: If the differential pinion gears, the differential side and the thrust washers are to be reused, mark the components so they can be re-installed in their original location in the differential case.
  5. Remove the following from the differential case:
    • The thrust washers
    • The differential pinion gears
    • The differential pinion spider
    6. Fig 2: Differential Thrust Washers, Pinion Gears & Pinion Spider
    G01480805Courtesy of GENERAL MOTORS CORP.
  6. Remove the differential side gears.
    Fig 3: Differential Side Gears
    G01480806Courtesy of GENERAL MOTORS CORP.
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