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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 Oil Balancing >> Balancing Procedure

Balancing Procedure

    IMPORTANT: The refrigerant oil in the A/C system must be balanced during compressor replacement.
    Fig 1: Draining A/C Refrigerant Oil From Compressor
    GM821777Courtesy of GENERAL MOTORS CORP.
  1. Before installing the compressor, the refrigerant oil will have to be fully drained.
  2. Add back the same quantity of polyalkylene glycol (PAG) oil as drained from the removed compressor.

    Refer to the amount of refrigerant oil recorded during the compressor removal.

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