Hummer H3. Manual - part 1012

differential case in order to compress the differential bearing retainer and differential
coil assembly against the locking differential coil plate.

3. Install the differential bearing retainer.

Make sure the differential bearing retainer is evenly and fully seated in the differential
bearing retainer slot before releasing the differential bearing race.

5. Install the differential side bearing. Refer to Differential Side Bearings Replacement.

6. Install the differential assembly. Refer to Differential Replacement.

7. Lower the vehicle.

DIFFERENTIAL OVERHAUL

Disassembly Procedure

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

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 111: Identifying Ring Gear Bolts
Courtesy of GENERAL MOTORS CORP.

2. Remove the ring gear bolts. Discard the bolts.

IMPORTANT: The ring gear bolts have left-hand threads.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 112: Removing Ring Gear From Differential
Courtesy of GENERAL MOTORS CORP.

3. Remove the ring gear from the differential case.

Drive the ring gear off with a brass drift if necessary.

NOTE:

Do not pry the ring gear from the differential case. Prying the
ring gear from the differential case may cause damage to the
ring gear and/or the differential case.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 113: Exploded View Of Differential Case
Courtesy of GENERAL MOTORS CORP.

4. Remove the differential pinion gears and the differential side gears by performing the

following steps:

1. Mark the pinion gears top and bottom and the differential side gears left and right.

2. Remove the pinion shaft lock bolt.

3. Remove the pinion shaft.

4. Roll the differential pinion gears out of the case with the pinion gear thrust washers.

5. Remove the differential side gears and the side gear thrust washers.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

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