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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 >> Balancing Procedure

Balancing Procedure

    Fig 1: Draining A/C Refrigerant Oil From Compressor
    GM821777Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The refrigerant oil in the A/C system must be balanced during compressor replacement.

    The replacement compressor is shipped with a service charge of 74ml (2.5fl.oz) or 40ml (1.4fl.oz) of refrigerant oil.

  1. Refer to the amount of refrigerant oil recorded during the compressor removal.
  2. If the amount of oil recorded from the removed compressor is less than or equal to the service charge of oil in the new compressor, add back the full amount of the new PAG oil back into the new compressor through the compressor suction port.
  3. If the amount of oil recorded from the removed compressor is greater than the service charge of oil in the new compressor, add back the full new PAG oil back into the new compressor and supplement with new PAG to the new compressor through the compressor suction port.
  4. Rotate the clutch driver three times to lubricate the internal compressor components.
    5. NOTE:

    If additional A/C components are replaced during compressor replacement, add the PAG oil directly to the A/C compressor to compensate the A/C system.

  5. If necessary, Approximate Fluid Capacities 
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