Hummer H2. Manual — part 884

Fig. 119: Applying Gear Marking Compound To Ring Gear Teeth
Courtesy of GENERAL MOTORS CORP.

2. Use a medium stiff brush in order to sparingly apply gear marking compound, GM P/N 1052351

(Canadian P/N 10953497) or equivalent, to all of the ring gear teeth.

3. Torque the bearing caps bolts to specification.

IMPORTANT: Performing a test without loading the gears will not produce a satisfactory

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

4. Apply the park brake until a torque load of 14 N.m (10 lb ft) is required in order to turn the pinion.

5. Using a wrench, turn the drive pinion flange/yoke so that the ring gear rotates 3 full revolutions.

6. Turn the drive pinion flange/yoke in the opposite direction so that the ring gear rotates 3 full revolutions

in the opposite direction.

7. Observe the pattern on the ring gear teeth. Compare the pattern with the following illustrations.

Correct Contact Pattern

Condition

Fig. 120: Correct Contact Pattern
Courtesy of GENERAL MOTORS CORP.

The backlash and pinion depth is correct.

Correction

None required.

Service Hints

pattern.

IMPORTANT: Avoid turning the ring gear excessively.

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Loose bearings on the drive pinion or in the differential case may cause patterns that vary. If the contact pattern
varies, inspect the following preload settings:

z

Total assembly

z

Differential case

z

Pinion

If these settings are correct, inspect for damage or incorrectly assembled parts.

Drive Side Heel - Coast Side Toe Contact Pattern

Fig. 121: Drive Side Heel - Coast Side Toe Contact Pattern
Courtesy of GENERAL MOTORS CORP.

Condition

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

Correction

Decrease the backlash. Move the ring gear closer to the pinion by adjusting the side bearing shim thickness or
the adjuster sleeve(s). Refer to Backlash Adjustment .

Drive Side Toe - Coast Side Heel Contact Pattern

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

Fig. 122: Drive Side Toe - Coast Side Heel Contact Pattern
Courtesy of GENERAL MOTORS CORP.

Condition

The backlash is incorrect. The ring gear is too close to the drive pinion.

Correction

Increase the backlash. Move the ring gear away from the pinion by adjusting the side bearing shim thickness or
the adjuster sleeve(s). Refer to Backlash Adjustment .

Drive Side Heel - Coast Side Heel Contact Pattern

2004 Hummer H2

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2