Hummer H3. Manual — part 999

Fig. 62: Holding Pinion Yoke With Special Tool
Courtesy of GENERAL MOTORS CORP.

15. Install the J 8614-01 onto the pinion yoke as shown.

16. Tighten the pinion nut while holding the J 8614-01 .

Tighten: Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion
while tightening the nut to seat the bearings.

NOTE:

Refer to Fastener Notice .

IMPORTANT: If the rotating torque is exceeded, the pinion will have to be

removed and a new collapsible spacer installed.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 63: Measuring Pinion Rotating Torque
Courtesy of GENERAL MOTORS CORP.

17. Measure the rotating torque of the pinion using an inch-pound torque wrench.

Specification: The rotating torque of the pinion should be between 1.0-2.3 N.m (10-20 lb
in) for used bearings or 1.7-3.4 N.m (15-30 lb in) for new bearings.

18. If the rotating torque measurement is below 1.0 N.m (10 lb in) for used bearings or 1.7 N.m

(15 lb in) for new bearings, continue to tighten the pinion nut.

Tighten: Tighten the pinion nut, in small increments, as needed, until the torque required in
order to rotate the pinion is between 1.0-2.3 N.m (10-20 lb in) for used bearings or 1.7-3.4
N.m (15-30 lb in) for new bearings.

19. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings

have seated.

Inspect the rotating torque and adjust if necessary.

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

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

21. Fill the axle with lubricant. Use the proper fluid. Refer to Rear Axle Lubricant

Replacement.

22. Lower the vehicle.

DIFFERENTIAL REPLACEMENT

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Drain the rear axle. Refer to Rear Axle Lubricant Replacement.

Fig. 64: View Of Propeller Shaft
Courtesy of GENERAL MOTORS CORP.

3. Remove the propeller shaft. Refer to Rear Propeller Shaft Replacement .

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3

Fig. 65: View Of Rear Leaf Spring Park Brake Cable Retaining Bolt
Courtesy of GENERAL MOTORS CORP.

4. Remove the retaining bolt for the park brake cables at the leaf springs.

2007 Hummer H3

2007 Driveline/Axle Rear Drive Axle - H3