Hummer H3. Manual — part 1021

Fig. 130: Identifying High Flank Contact Pattern
Courtesy of GENERAL MOTORS CORP.

Condition

The pinion depth is incorrect. The pinion gear is too far away from the ring gear.

Correction

Increase the pinion depth. Move the pinion gear closer to the ring gear by increasing the pinion
shim thickness. Refer to Pinion Depth Adjustment .

Low Flank Contact Pattern

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 131: Identifying Low Flank Contact Pattern
Courtesy of GENERAL MOTORS CORP.

Condition

The pinion depth is incorrect. The pinion gear is too close to the ring gear.

Correction

Decrease the pinion depth. Move the pinion gear away from the ring gear by decreasing the
pinion shim thickness. Refer to Pinion Depth Adjustment .

LOCKING DIFFERENTIAL DISASSEMBLE

1. Remove the differential side bearings. Refer to Differential Side Bearings Replacement.

2. Remove the ring gear. Refer to Drive Pinion and Ring Gear Replacement.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 132: Identifying Differential Bearing Retainer
Courtesy of GENERAL MOTORS CORP.

3. Remove the differential bearing retainer by performing the following steps:

1. With the aid of an assistant, push the differential bearing race down towards the

differential case in order to relieve the pressure against the differential bearing

IMPORTANT: The differential bearing race must be compressed in order to

remove the differential bearing retainer.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

retainer.

2. Remove the differential bearing retainer.

Fig. 133: View Of Differential Bearing Race
Courtesy of GENERAL MOTORS CORP.

4. Remove the differential bearing race.

5. Remove the locking differential coil assembly.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3