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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation, And Air Conditioning >> Repair Instructions >> Compressor Replacement >> Installation Procedure

Installation Procedure

  1. Add the proper amount of PAG oil to the compressor crankcase. Refer to Refrigerant System Capacities .
    2. Fig 1: View of A/C Compressor & Bolts
    GM648141Courtesy of GENERAL MOTORS CORP.
  2. Install the A/C compressor (2) to the bracket (1).
    3. NOTE: Refer to Fastener Notice .
  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.
  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 Air Conditioning Compressor Belt Replacement .
  12. Install the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement .
  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  .
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