Hummer H2. Manual - part 852

Fig. 8: Damaged Areas 
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 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Fig. 9: Frettage 
Courtesy of GENERAL MOTORS CORP. 

Corrosion caused by small relative movement of parts with no lubrication. Replace the bearing. Clean the 
related parts. Check the seals. Check for proper lubrication. 

Smears 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Fig. 10: Smears 
Courtesy of GENERAL MOTORS CORP. 

Smearing of the metal due to slippage. Slippage can be caused by the following factors: 

z

Poor fits  

z

Lubrication  

z

Overheating  

z

Overloads  

z

Handling damage  

Replace the bearings. Clean the related parts. Check for proper fit and lubrication. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Stain Discoloration 

Fig. 11: Stain Discoloration 
Courtesy of GENERAL MOTORS CORP. 

Discoloration ranging from light brown to black. This discoloration is caused from incorrect lubrication or 
moisture. Reuse the bearing if you can remove the stains with light polishing. Reuse the bearing if there is no 
evidence of overheating. Check the seals and the related parts for damage. 

Heat Discoloration 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2