Hummer H3. Manual — part 983

Fig. 11: 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

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 12: Identifying Double Edge Pitting
Courtesy of GENERAL MOTORS CORP.

Flaking of surface metal results from fatigue, usually at both edges of the race and rollers.
Replace the bearing. Clean all related parts. Replace the shaft if damaged.

Misalignment

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 13: Identifying Misalignment
Courtesy of GENERAL MOTORS CORP.

Outer misalignment due to a foreign object. Replace the bearing. Ensure races are properly
seated. Replace the shaft if the bearing operating surface is damaged.

Frettage

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 14: Identifying Frettage
Courtesy of GENERAL MOTORS CORP.

Corrosion set up by a small relative movement of parts with no lubrication. Replace the bearing.
Clean all the relative parts. Check the seals. Check for proper fit and lubrication. Replace the
shaft if damaged.

Smears

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3