General Motors Compressor
NOTE:
System must be discharged of all refrigerant and compressor removed from the engine to check the oil level, With the compressor on the bench, proceed as follows:
- Remove drain plug on compressor oil reservoir and drain oil into a measuring container. Note amount and condition of oil drained, then discard this oil.
- Install correct amount of new refrigeration oil by pouring oil into drain plug hole on compressor, then reinstall drain plug. Determine amount of oil to be installed as follows: