Wheel Bearing Wear - Front Drive Axle (Straight): Indentations

Fig 1: Straight Roller Bearing Wear - Indentations

Courtesy of GENERAL MOTORS CORP.

Surface depressions on race and rollers can be caused by hard particles of foreign material. Clean all of the parts, including the housing. Check the seals. Replace the bearings if rough or noisy. Replace the shaft if damaged.