Chevrolet Silverado / GMC Sierra. Manual — part 1401
Fig. 7: Identifying Major Wear
Courtesy of GENERAL MOTORS CORP.
Heavy pattern on races and rollers can be caused by fine abrasives. Clean all of the parts
including the housing. Check the seals. Replace the bearings if rough or noisy. Replace the shaft if
damaged.
Brinelling
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 8: Identifying Brinelling
Courtesy of GENERAL MOTORS CORP.
Surface indentations in the raceway can be caused by roll either under impact loading or
vibration while the bearing is not rotating. Replace the bearing if rough or noisy. Replace the
shaft if damaged.
Indentations
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 9: Identifying 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.
Single Edge Pitting
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 10: Identifying Single Edge Pitting
Courtesy of GENERAL MOTORS CORP.
Flaking of surface metal results from fatigue, usually at one edge of race and rollers. Replace the
bearing. Clean all related parts. Replace the shaft if damaged.
Double Edge Pitting
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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