Hummer H2. Manual - part 2132

Fig. 70: Installing Rack Piston Balls Into Ball Guide Using Grease 
Courtesy of GENERAL MOTORS CORP. 

7. Install the remaining rack piston balls (3) into the ball guide (1) using grease at each end (2) to retain the 

rack piston balls (3). 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Fig. 71: Installing Ball Guide To Rack Piston 
Courtesy of GENERAL MOTORS CORP. 

8. Install the ball guide (3) to the rack piston (2).  

9. Install the ball guide clamp (4). 

10. Install the screws (5). 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Tighten: Tighten the screws (5) to 6 N.m (53 lb in).

11. Insert J 21552 into the bore of the rack piston while turning the worm shaft counterclockwise. The 

turning of the worm shaft forces the rack piston onto J 21552 . The rack piston balls remain in place. See 
Special Tools and Equipment . 

Fig. 72: Installing Flat Races & Thrust Bearing Onto Worm Shaft (700 Gear) 
Courtesy of GENERAL MOTORS CORP. 

12. Install the flat races (2, 4) and the thrust bearing (3) onto the worm shaft (1). 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Fig. 73: Installing Worm Shaft To Steering Gear Housing 
Courtesy of GENERAL MOTORS CORP. 

13. Install the worm shaft (4) to the steering gear housing (3). 

14. Install the spool valve. Refer to Steering Gear Valve Replacement - Off Vehicle (700 Gear) .  

15. Install the rack piston (2) to the worm (4) from J 21552 using J 8947 to compress the seals.  

16. Hold J 21552 tightly against the worm shaft (4). See Special Tools and Equipment .  

17. Turn the stub shaft clockwise until the rack piston (2) is seated on the worm shaft (4).  

18. Remove J 21552 from the rack piston (1). See Special Tools and Equipment .  

19. Install the rack piston plug (1). 

Tighten: Tighten the rack piston plug to 150 N.m (111 lb ft). 

20. Install the housing end plug. Refer to Steering Gear Housing End Plug Replacement - Off Vehicle . 

IMPORTANT: Do not adjust the worm shaft until all components are installed onto the 

steering gear housing.

IMPORTANT: Do not adjust the pitman shaft until all components are installed onto the 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2