Front Differential Bearing Race and Selective Shim Removal

Tools Required

• J 45124  Removal Bridge. See Special Tools .
• J 45160  Differential Bearing Race Remover. See Special Tools .

Fig 1: Seating J 45160 Into Bearing Race
Courtesy of GENERAL MOTORS CORP.
1. Install the J 45160  onto the bearing race taking care to make sure the bottom of the tool is all the way down inside the race and seats flat on top of the selective shim before tightening. See Special Tools .
2. Using two wrenches tighten J 45160  to firmly seat the tool into the bearing race for removal. See Special Tools .
Fig 2: Removing Front Differential Bearing Race
Courtesy of GENERAL MOTORS CORP.
3. Position the adjustable leg sections of J 45124  (1) to seat squarely onto the top of the case section around the front differential bearing race (90). See Special Tools .
4. Attach J 45124  (1) to J 45160  (2) and hand tighten the center bolt to lightly apply tension to prevent movement of the tool assembly. See Special Tools . Reinspect the position of the adjustable legs of J 45124  (1) to ensure that the front differential bearing race will clear the adjustable legs and no damage to the transmission case assembly will occur when removing the race. See Special Tools .
5. Tighten the bolt on J 45124  (1) to remove the front differential bearing race (90) from the transmission case assembly. See Special Tools .
Fig 3: View Of Front Differential Bearing Race Selective Shim
Courtesy of GENERAL MOTORS CORP.
6. Remove the front differential bearing race selective shim (88) from the transmission case assembly.
7. Measure the front differential bearing race selective shim (88) to determine its size. Based on the obtained measurement, refer to Shim Size Specifications  in order to determine the correct size of shim that will be needed. If the obtained rotational torque measurement was less than the listed specification, then a larger/thicker selective shim will be required. If the obtained rotational torque measurement was greater than the listed specification, then a smaller/thinner shim will be required.