Air Conditioning Compressor Oil Balancing

Air Conditioning Compressor Oil Balancing

Draining Procedure

Important: Drain and measure as much of the refrigerant oil as possible from the removed compressor.


1. Remove the compressor crankcase oil drain plug and drain the crankcase into a clean, graduated container.




2. Drain the oil from both the suction and discharge ports of the removed compressor 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. This measurement will be used during installation of the replacement compressor.
4. Properly discard the used refrigerant oil.

Balancing Procedure





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


1. Drain the new compressor.
2. Add the same quantity of new oil to the new compressor that was drained from the removed compressor.