Balancing Procedure

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

The replacement compressor is shipped with 240 ml (8.0 oz) of refrigerant oil.

Fig 1: Draining A/C Refrigerant Oil From Compressor

Courtesy of GENERAL MOTORS CORP.

Before installing the compressor, the refrigerant oil will have to be partially drained:
1. Refer to the amount of refrigerant oil recorded during the compressor removal.
2. Subtract the amount recorded from the total system capacity. Refer to Refrigerant System Capacities .
  The difference between the total system capacity and the recorded amount is the calculated amount to be drained from the replacement compressor.
Drain the calculated amount of refrigerant oil from the replacement compressor.