Hummer H2. Manual - part 1972

Fig. 6: A/C Compressor Mounting Bolts (L18) 
Courtesy of GENERAL MOTORS CORP. 

14. Remove the A/C compressor mounting bolts.  

15. Remove the A/C compressor (2) from the bracket (1).  

16. If replacing the A/C compressor. Refer to Compressor Oil Balancing .  

Installation Procedure 

1. Add the proper amount of PAG oil to the compressor crankcase. Refer to Refrigerant System 

Capacities . 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 7: A/C Compressor Mounting Bolts (L18) 
Courtesy of GENERAL MOTORS CORP. 

2. Install the A/C compressor (2) to the bracket (1). 

3. Install the A/C compressor mounting bolts. 

Tighten: Tighten the bolts to 50 N.m (37 lb ft). 

4. Connect the electrical connector to the A/C compressor coil.  

5. Remove the caps or tape from the hose and line ends. 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

6. Install the new sealing washers. Refer to Sealing Washer Replacement .  

7. Install the A/C suction hose to the compressor.  

8. Install the A/C suction hose bolt to the A/C compressor. 

Tighten: Tighten the bolt to 16 N.m (12 lb ft). 

9. Install the A/C discharge hose to the A/C compressor.  

10. Install the A/C discharge hose bolt to the A/C compressor. 

Tighten: Tighten the bolt to 16 N.m (12 lb ft). 

11. Install the A/C drive belt. Refer to Drive Belt Replacement - Air Conditioning in Engine Mechanical - 

6.0L.  

12. Install the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.  

13. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .  

14. Leak test the fittings of the component using the J 39400-A . See Special Tools and Equipment .  

COMPRESSOR CLUTCH PLATE/HUB ASSEMBLY REPLACEMENT 

Removal Procedure 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 8: Removing Engine Protection Shield 
Courtesy of GENERAL MOTORS CORP. 

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 

2. Remove the bolts from the engine protection shield.  

3. Remove the engine protection shield. 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2