A/C Compressor - External Leak Test

Climate Control System


Component Tests

A/C Compressor - External Leak Test

1. Disconnect the evaporator outlet line spring lock coupling and the compressor-to-condenser discharge line middle fitting.

2. Connect the appropriate test fittings to the evaporator outlet line spring lock coupling, compressor side and the compressor-to-condenser discharge line middle fitting, compressor side.

3. Connect the high- and low-pressure lines of a manifold gauge set or a refrigerant recovery/recycling station to the corresponding fittings on the test adapter.

4. Attach the center hose of a manifold gauge set to a refrigerant container standing in an upright position.

5. Open the low pressure gauge valve, the high pressure gauge valve and the valve on the refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.

6. Using the Refrigerant Leak Detector, check for external compressor leaks.

7. If an external leak is found, inspect and install new as necessary the O-rings at the compressor line fittings. Retest the system. If the test again indicates a leak, install a new compressor.

8. When the leak test is complete, recover the refrigerant from the compressor.