Testing Procedure
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- Wipe clean the differential case, the ring gear and the differential carrier housing of lubricant. Carefully clean each tooth of the ring gear.
Use a medium stiff brush in order to sparingly apply gear marking compound GM P/N 1052351 (Canadian P/N 10953497) or equivalent to all of the ring gear teeth.
- Using a wrench, turn the drive pinion flange/yoke so that the ring gear rotates at least 3 full revolutions.
- Turn the drive pinion flange/yoke in the opposite direction so that the ring gear rotates at least 3 full revolutions in the opposite direction.
- Observe the pattern on the ring gear teeth. Compare the pattern with the following illustrations.
- Once the proper pattern is obtained, continue the assembly of differential carrier. Refer to Front Axle Assemble .
IMPORTANT:
Avoid turning the ring gear excessively.