Hummer H2. Manual — part 851

Fig. 4: Galling
Courtesy of GENERAL MOTORS CORP.

Metal smears on the roller ends due to overheating, lubricant failure, or lubricant overload. Replace the bearing.
Check the seals. Check for proper lubrication.

Etching

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Fig. 5: 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

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Fig. 6: Bent Cage
Courtesy of GENERAL MOTORS CORP.

A damaged cage due to improper handling or improper tool usage. Replace the bearing.

Cage Wear

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Fig. 7: 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

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2