Wheel Bearings Diagnosis (Tapered): Indentations

Fig 1: Identifying Indentations

Courtesy of GENERAL MOTORS CORP.

The surface depressions on the race and the rollers are caused by hard particles of foreign matter.

1. Check the seals.
2. Clean all the parts and the housings.
3. Replace the bearings. Refer to WHEEL HUB, BEARING, AND SEAL REPLACEMENT in Front Suspension.