Hummer H2. Manual — part 2118
Fig. 19: Removing Control Valve Assembly & Flow Control Spring From Pump Housing Assembly
Courtesy of GENERAL MOTORS CORP.
5. If replacement is required, remove the control valve assembly (2) and the flow control spring (3) from the
pump housing assembly (1).
2004 Hummer H2
2004 STEERING Power Steering System - Hummer H2
Fig. 20: Reservoir Assembly & Pump Housing Assembly
Courtesy of GENERAL MOTORS CORP.
6. Remove the reservoir assembly (1) from the pump housing assembly (2).
2004 Hummer H2
2004 STEERING Power Steering System - Hummer H2
Fig. 21: Reservoir O-ring Seals
Courtesy of GENERAL MOTORS CORP.
7. Remove the O-ring seals (1) (4) (5).
8. Remove the magnet (3).
9. Clean the magnet (3).
10. Inspect the welch plug in the power steering pump housing (2). Do not remove. If the welch plug is
deformed or dislodged, replace the power steering pump housing (2).
Assembly Procedure
2004 Hummer H2
2004 STEERING Power Steering System - Hummer H2
Fig. 22: Pump Housing Assembly Components
Courtesy of GENERAL MOTORS CORP.
1. Lubricate the O-ring seals (1) (4) (5) with power steering fluid.
2. Install the flow control spring (7) to the pump housing assembly (2).
3. Install the control valve assembly (6) to the flow control spring (7).
4. Install the O-ring seals (1) (4) (5) to the pump housing assembly.
5. Install the magnet (3) to the pump housing assembly (2).
IMPORTANT: Use new O-ring seals when assembling the power steering pump
assembly.
2004 Hummer H2
2004 STEERING Power Steering System - Hummer H2
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