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Removal Procedure

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  1. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the axle shafts. Refer to REAR AXLE SHAFT REPLACEMENT (8.6 INCH AXLE W/O JL4, 9.5 INCH AXLE)  or REAR AXLE SHAFT REPLACEMENT (8.6 INCH AXLE W/JL4)  or REAR AXLE SHAFT REPLACEMENT (9.75 INCH AXLE)  .
    Fig 1: Removing Differential - 9.75 Inch Axle (1 Of 2)
    G01456195Courtesy of GENERAL MOTORS CORP.
  3. Loosen the bearing cap bolts.
  4. Do not remove the bearing cap bolts at this time.
  5. Install the J 24385-01  onto the axle housing as shown.
  6. Install the J 25025  (2), the J 8001-1  and the J 8001-2  (1), the J 34178  (3), and the J 8001-3  and the J 8001-4  (4) onto the axle housing as shown.
  7. Preload the dial of the J 8001-3  by pushing the J 8001-3  against the edge of the J 24385-01  until the needle of the J 8001-3  has moved approximately 3/4 of a turn clockwise.
  8. Rotate the indicator housing to align the indicator needle of the J 8001-3  and the dial indicator face to ZERO.
    NOTE: Do not spread the axle housing more than 0.38 mm (0.015 inch). Overspreading the housing may result in component damage.
  9. Spread the axle housing by turning the clevis screw of the J 24385-01  clockwise while observing the J 8001  .

    Spread the housing just enough to remove the differential assembly.

  10. Remove the J 25025-B  , the J 8001-1  , the J 8001-2  , the J 34178  , the J 8001-3  and the J 8001-4  from the axle housing.
  11. Remove the bearing cap bolts.
    CAUTION: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed.

    Important:  Corresponding letters are stamped on the bearing caps and axle housing. The bearing caps must be reassembled in the same position as removed.

  12. Remove the bearing caps.
  13. Remove the differential assembly.
  14. Remove the J 24385-01  .
    Fig 2: Removing Differential - 9.75 Inch Axle (2 Of 2)
    G01456196Courtesy of GENERAL MOTORS CORP.
  15. Remove the ring gear. 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)  .
  16. Remove 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)  .
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