Hummer H2. Manual - part 2129

Fig. 57: Installing The Lock Washer And Nut (700 Gear)
Courtesy of GENERAL MOTORS CORP. 

5. Install the lock washer (2).  

6. Install the nut (3).  

7. If necessary, adjust the pitman shaft. Refer to Pitman Shaft Over-Center Preload Adjustment - Off 

Vehicle (670 Gear) to adjust the pitman shaft.  

STEERING GEAR HOUSING END PLUG REPLACEMENT - OFF VEHICLE 

Disassembly Procedure 

Fig. 58: Steering Gear Housing End Plug Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Rotate the stub shaft back and forth to drain the fluid. 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

2. Insert a punch into the housing access hole to unseat the retaining ring (1).  

3. Remove the plug (2).  

4. Remove the O-ring seal (3).  

Assembly Procedure 

Fig. 59: Steering Gear Housing End Plug Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Lubricate the O-ring seal (3) with power steering fluid.  

2. Install the O-ring seal (3) into the steering gear housing (5).  

3. Install the plug (2).  

4. Install the retaining ring (1). Ensure that the retaining ring open end is approximately 25 mm (1 in) from 

the access hole in the steering gear housing (5).  

STEERING GEAR VALVE REPLACEMENT - OFF VEHICLE (700 GEAR) 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Disassembly Procedure 

Fig. 60: Removing Stub Shaft & Valve Assembly From Steering Gear Housing 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the thrust support assembly. Refer to Steering Gear Thrust Support Replacement - Off 

Vehicle (700 Gear) .  

2. Remove the stub shaft (1) and the valve assembly (2) from the steering gear housing.  

3. If necessary, remove the stub shaft (1) from the valve assembly (2) in the following manner: 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

1. Tap the stub shaft (1) lightly on a wood block in order to loosen the cap.  

2. Pull the cap and the valve spool out from valve body (2) 6 mm (1/4 in).  

3. Disengage the stub shaft pin (3) from the hole in the valve spool (4).  

Fig. 61: Exploded View Of Valve Assembly (700 Gear) 
Courtesy of GENERAL MOTORS CORP. 

4. If the valve assembly needs repair, disassemble the valve in the following manner: 

1. Simultaneously pull and rotate the valve spool (1) from the valve body (3).  

2. Remove the valve spool O-ring seal (2).  

3. Alternately remove the valve body teflon rings (5) and the O-ring seals (4).  

Assembly Procedure 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2