Lumina APV V6-191 3.1L (1990)
Compressor Shaft Seal: Testing and Inspection
A shaft seal should not be changed because of small amounts of oil found on an adjacent surface. The seal is designed to leak some oil for lubrication
purposes. A shaft seal should be changed only when a large amount of sprayed oil is found, and only after actual refrigerant leakage is found by using an
approved leak detection procedure.
Should a compressor shaft seal ever have to be replaced, the accumulator in this system must also be removed from the vehicle. The oil in the
accumulator then must be drained, measured and replaced.