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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 183 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Air Conditioning Compressor Oil Balancing >> Draining Procedure

Draining Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:

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

  1. Remove the compressor crankcase oil drain plug from the removed compressor and drain the refrigerant oil from the crankcase into a clean, graduated container.
    2. Fig 1: Draining A/C Refrigerant Oil From Compressor
    GM821777Courtesy of GENERAL MOTORS COMPANY
  2. Drain the oil from both the suction and discharge ports into the same container. Rotate the compressor shaft to assist in draining the compressor.
  3. Measure and record the amount of oil drained from the removed compressor. In addition, measure and record the amount of oil recovered during refrigerant recovery.

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

  4. Inspect oil drained from removed compressor. Refer to Air Conditioning Compressor Oil Diagnosis .
  5. Properly discard the used refrigerant oil.
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