1991 Saab 9000 A/C COMPRESSOR SERVICING

download ISOLATING COMPRESSOR NOTE: Only compressors with stem-type service valves can be isolated. 1) Connect service gauge set to the compressor service valves and open compressor valves slightly (turn in clockwise). Start engine and operate air conditioning. Slowly turn compressor suction valve clockwise toward closed (front-seated) position. REFRIGERANT OIL Only new, pure, moisture-free refrigerant oil [...]