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Chevrolet Silverado / GMC Sierra. Manual - part 1324
Fig. 16: Identifying Etching
Courtesy of GENERAL MOTORS CORP.
Bearing surfaces appear gray or grayish black in color, with related etching away of material
usually at roller spacing. Replace the bearings. Check the seals. Check for proper lubrication.
Bent Cage
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 17: Identifying Bent Roller Cage
Courtesy of GENERAL MOTORS CORP.
A damaged cage due to improper handling or improper tool usage. Replace the bearing.
Cage Wear
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 18: Identifying Cage Wear
Courtesy of GENERAL MOTORS CORP.
Wear around the outside diameter of the cage and the roller pockets caused by abrasive material.
Wear caused from inefficient lubrication. Clean the related parts and the housings. Check the
seals. Replace the bearings.
Indentations
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 19: Inspecting Bearing Rollers & Races For Heat Discoloration
Courtesy of GENERAL MOTORS CORP.
Surface depressions on the race and the rollers caused by hard particles of foreign matter. Clean
all the parts and the housings. Check the seals. Replace rough or noisy bearings.
Frettage
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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