Hummer H2. Manual — part 865

Fig. 58: Measuring Pinion Rotation Torque
Courtesy of GENERAL MOTORS CORP.

8. Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded

during removal.

Tighten: Tighten the nut in small increments, as needed, until the rotating torque is 0.40-0.57 N.m (3- 5
lb in) greater than the rotating torque recorded during removal.

9. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.

Recheck the rotating torque and adjust if necessary.

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Fig. 59: Rear Propeller Shaft & Rear Axle Pinion Yoke
Courtesy of GENERAL MOTORS CORP.

10. Install the propeller shaft (3) to the pinion yoke (4).

Align the reference marks made during removal.

11. Install the propeller shaft yoke retaining clamps and the bolts.

Tighten: Tighten the propeller shaft yoke retaining clamp bolts to 25 N.m (18 lb ft).

12. Install the brake rotors and calipers. Refer to Brake Rotor Replacement - Rear in Disc Brakes.

13. Install the tire and the wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.

14. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Lubricant Level Inspection -

Rear Drive Axle .

15. Lower the vehicle.

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

DRIVE PINION AND RING GEAR REPLACEMENT

Tools Required

z

J 8614-01 Flange and Pulley Holding Tool

z

J 22536 Pinion Driver. See Special Tools and Equipment .

z

J 22388 Pinion Oil Seal Installer - Rear. See Special Tools and Equipment .

Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

2. Remove the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and

Wheels.

3. Remove the brake calipers. Refer to Brake Caliper Replacement - Rear in Disc Brakes.

4. Remove the brake rotors. Refer to Brake Rotor Replacement - Rear in Disc Brakes.

5. Remove the axle shafts. Refer to Rear Axle Shaft Replacement .

6. Remove the differential. Refer to Differential Replacement .

7. Remove the pinion yoke and the seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal

Replacement .

Fig. 60: Installing J 22536 To Pinion
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

8. Install the J 22536 as shown. See Special Tools and Equipment .

Ensure that the J 22536 is firmly seated on the pinion. See Special Tools and Equipment .

9. Drive the pinion out using the J 22536 and a hammer. See Special Tools and Equipment .

Strike the J 22536 slowly. See Special Tools and Equipment . Do not let the pinion fall out of the rear
axle housing.

Fig. 61: Collapsible Spacer From Pinion
Courtesy of GENERAL MOTORS CORP.

10. Remove the collapsible spacer from the pinion. Discard the spacer.

11. Remove the pinion bearings and the cups. Refer to Drive Pinion Bearings Replacement .

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2