Hummer H2. Manual — part 2127

3. Turn the pitman shaft adjuster screw (1) counterclockwise until the screw is fully extended.

4. Turn the pitman shaft adjuster screw (1) clockwise 1 full turn.

5. Rotate the stub shaft (3) from stop to stop using a 12-point socket while counting the number of turns.

6. Starting at either stop, turn the stub shaft (3) back half of the total number of turns. This is the center of

the gear.

Fig. 52: Aligning Master Spline On Pitman Shaft With Adjuster Screw
Courtesy of GENERAL MOTORS CORP.

7. Make sure that the gear is centered by checking the following items:

z

The flat on the stub shaft (3) faces upward.

z

The flat on the stub shaft (3) is parallel with the side cover (2).

8. Align the master spline (5) on the pitman shaft (4) with the adjuster screw (1).

2004 Hummer H2

2004 STEERING Power Steering System - Hummer H2

Fig. 53: Rotating Stub Shaft 45 Degrees From Each Side Of Center Of Stub Shaft
Courtesy of GENERAL MOTORS CORP.

9. Place a torque wrench on the stub shaft (2) with the handle in the vertical position.

10. Rotate the stub shaft (2) 45 degrees from each side of the center of the stub shaft. The stub shaft (2) must

rotate smoothly.

11. Record the worm bearing preload measured on or near the center (1). The recorded bearing preload must

be 1.2 N.m (10.5 lb in) with the worm and the ball nut installed. If the torque is outside of this range,
readjust or repair the steering gear assembly as required.

12. To obtain the correct preload torque, adjust the over-center torque by turning the pitman shaft adjuster

screw clockwise.

13. Add 0.9 N.m (8 lb in) torque to the previously measured worm bearing preload torque.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 STEERING Power Steering System - Hummer H2

Tighten: Tighten the adjuster lock nut to 44 N.m (32 lb ft). Prevent the adjuster screw from turning while
tightening the adjuster lock nut.

STEERING GEAR PITMAN SHAFT AND HOUSING COVER REPLACEMENT - OFF VEHICLE
(700 GEAR)

Disassembly Procedure

Fig. 54: Installing The Lock Washer And Nut (700 Gear)

2004 Hummer H2

2004 STEERING Power Steering System - Hummer H2

Courtesy of GENERAL MOTORS CORP.

1. Remove the nut (3).

2. Remove the lock washer (2).

3. Clean the exposed end of the pitman shaft.

4. Clean the steering gear housing (1).

5. Use a wire brush to clean the pitman shaft splines.

2004 Hummer H2

2004 STEERING Power Steering System - Hummer H2