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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation, And Air Conditioning >> Repair Instructions >> Air Conditioning Compressor Oil Balancing >> Draining Procedure

Draining Procedure

    NOTE:

    Drain and measure as much of the refrigerant oil as possible from the rear head ports of the REMOVED compressor.

  1. Drain the refrigerant oil from the crankcase and rear head ports into a clean, graduated container.
    2. Fig 1: Draining A/C Refrigerant Oil From Compressor
    GM821777Courtesy of GENERAL MOTORS COMPANY
  2. Rotate the compressor shaft to assist in draining the compressor.
  3. Measure and record the amount of oil drained from the removed compressor.

    This measurement will be used during installation of the replacement compressor.

  4. Inspect oil drained from removed compressor. Air Conditioning Compressor Oil Diagnosis .
  5. Properly discard the used refrigerant oil.
  6. Clean the graduated cylinder.
    7. NOTE:

    Drain and measure as much of the refrigerant oil as possible from the rear head ports of the NEW compressor.

  7. Remove the drain bolt and drain the refrigerant oil from the crankcase and rear head ports into a clean, graduated container.
  8. Rotate the compressor shaft to assist in draining the compressor.
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