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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1909 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Air Conditioning Compressor Oil Balancing (With HP5) >> Balancing Procedure

Balancing Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: The refrigerant oil in the A/C system must be balanced during compressor replacement.
  1. The replacement compressor is shipped with 74 ml (2.5 oz) of refrigerant oil.
    2. Fig 1: Draining Oil From Both Suction And Discharge Ports Of Compressor
    GM2076863Courtesy of GENERAL MOTORS CORP.
  2. Before installing the compressor, calculate the total amount of oil drained from the compressor and collected by the recovery equipment.
  3. If the amount drained and recorded is:
    • LESS THAN 74ml (2.5 ounces), leave 74ml (2.5 ounces) in the replacement compressor. Do not drain the oil from the replacement compressor.
    • MORE THAN 74ml (2.5 ounces), calculate the difference between the amount that was drained and recorded. ADD the calculated difference to the A/C system using J 45037:  injector along with GE 48997:  adapter.
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