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