GM Service Manual Online
For 1990-2009 cars only

Differential Side Bearings Replacement All Except 9.75 Inch Axle

Tools Required

    • J 22912-B Split Plate Bearing Puller
    • J 8092 Universal Driver Handle - ¾ in - 10
    • J 21784 Side Bearing Installer
    • J 22888-D Side Bearing Remover Kit
    • J 29710 Differential Side Bearing Installer
    • J 36597 Side Bearing Puller Pilot - 9.25  Axle
    • J 44420 Differential Bearing and Hub Seal Installer

Removal Procedure

  1. Remove the differential assembly. Refer to Differential Replacement .

  2. Object Number: 680400  Size: SH
  3. Remove the differential side bearings by doing the following:
  4. 2.1. For the 8.6 inch, 9.5 inch, 11.5 inch axles, install the differential assembly into a vise.
    2.2. For the 10.5 inch axle, place a block of wood on each side of the differential assembly.

    Install the differential assembly into a vise.

    2.3. Install the J 22888-20A  (2) and the J 8107-4 , 8.6 inch axle, or the J 36597 , 9.5 inch or 10.5 inch axle, or the J 8107-5, 11.5 inch (1) axle, over the differential case side bearing bore.
    2.4. Remove the differential side bearings using the J 22888-20A .

Installation Procedure


    Object Number: 651740  Size: SH
  1. For the 8.6 inch, the 9.5 inch, and the 10.5 inch axles, install the differential side bearings by doing the following:
  2. 1.1. In order to protect the differential case, install the J 8107-4 , 8.6 inch axle, or the J 36597 , 9.5 inch or 10.5 inch axles, in the case on the side opposite the bearing installation.
    1.2. Install the J 21784 , 8.6 inch axle, or the J 29710 , 9.5 inch or 10.5 inch axles (2), and the J 8092  (1) onto the differential case bearing as shown.
    1.3. Drive the bearing onto the case using the J 21784 or the J 29710 and the J 8092 .

    Object Number: 720308  Size: SH
  3. For the 11.5 inch axle, install the differential side bearings by doing the following:
  4. 2.1. In order to protect the differential case, install the J 8107-5 in the case on the side opposite the bearing installation.
    2.2. Install the J 44420  (2) and the J 8092  (1) onto the differential case bearing as shown.
    2.3. Drive the bearing onto the case using the J 44420 and the J 8092 .
  5. Install the differential assembly. Refer to Differential Replacement .

Differential Side Bearings Replacement 9.75 Inch Axle

Tools Required

    • J 22888-D Side Bearing Remover Kit
    • J 24430 Differential Side Bearing Installer
    • J 36597 Side Bearing Puller Pilot - 9.25 inch
    • J 45711 Differential Side Bearing Remover - Dana 248
    • J 45900 Differential Side Bearing Installer - Dana Axles
    • J 8092 Universal Driver Handle - 3/4 in - 10

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the differential assembly. Refer to Differential Replacement .

  3. Object Number: 821010  Size: SH
  4. Remove the differential side bearing by performing the following steps:
  5. 3.1. Install the J 45711  (2) and the J 36597  (1) as shown.
    3.2. Remove the differential side bearing using the J 45711 and a hydraulic press.

    Important: Mark the inboard shims left or right.

  6. Remove the inboard shims.

Installation Procedure

  1. Determine the shim thickness and preload for the differential assembly. Refer to Differential Carrier Bearing Preload Adjustment .

  2. Object Number: 651740  Size: SH
  3. Install the differential side bearing by doing the following:
  4. 2.1. In order to protect the differential case, install the J 8107-3 in the case on the side opposite of the bearing installation.
    2.2. Install the inboard shims.
    2.3. Install the differential side bearing.
    2.4. Install the J 24430 or the J 45900  (2) and the J 8092  (1) over the differential side bearing.
    2.5. Drive the differential side bearing into position using the J 24430 or the J 45900 and the J 8092 .
    2.6. Install the differential assembly. Refer to Differential Replacement .
  5. Fill the axle with lubricant. Use the proper fluid. Refer to Rear Axle Lubricant Replacement .
  6. Lower the vehicle.