Hummer H3. Manual — part 982

Consider the following factors when diagnosing a bearing condition:

Note the general condition of all parts during disassembly and inspection.

Classify the failure with the aid of the illustrations.

Determine the cause.

Make all repairs following recommended procedures.

Wear (Minor)

Fig. 7: Identifying Minor Wear
Courtesy of GENERAL MOTORS CORP.

Light pattern on races and rollers can be caused by fine abrasives. Clean all of the parts including

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

the housings. Check the seals. Replace the bearings if rough or noisy. Replace the shaft if
damaged.

Wear (Major)

Fig. 8: Identifying Major Wear
Courtesy of GENERAL MOTORS CORP.

Heavy pattern on races and rollers can be caused by fine abrasives. Clean all of the parts
including the housing. Check the seals. Replace the bearings if rough or noisy. Replace the shaft if
damaged.

Brinelling

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 9: Identifying Brinelling
Courtesy of GENERAL MOTORS CORP.

Surface indentations in the raceway can be caused by roll either under impact loading or
vibration while the bearing is not rotating. Replace the bearing if rough or noisy. Replace the
shaft if damaged.

Indentations

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 10: Identifying Indentations
Courtesy of GENERAL MOTORS CORP.

Surface depressions on race and rollers can be caused by hard particles of foreign material. Clean
all of the parts, including the housing. Check the seals. Replace the bearings if rough or noisy.
Replace the shaft if damaged.

Single Edge Pitting

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3