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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 >> Removal Procedure

Removal Procedure

    Fig 1: A/C Belt Tensioner
    GM370869Courtesy of GENERAL MOTORS CORP.
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement .
  3. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.
  4. Rotate the A/C belt tensioner clockwise in order to relieve the tension on the belt.
  5. Remove the A/C belt from the A/C compressor.
  6. Slowly release the tension on the A/C belt tensioner.
  7. Remove the A/C discharge hose bolt from the A/C compressor.
  8. Remove the A/C discharge hose from the A/C compressor.
  9. Remove the A/C suction hose bolt from the A/C compressor.
  10. Remove the A/C suction hose from the A/C compressor.
  11. Discard the sealing washers.
  12. Cap or tape all of the hose and line ends.
  13. Disconnect the electrical connector from the A/C compressor coil.
    14. Fig 2: View of A/C Compressor & Bolts
    GM648141Courtesy 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 .
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