Compressor HVAC: Testing and Inspection

Climate Control System

Component Tests

A/C Compressor - External Leak Test

1. Install the appropriate fittings from the A/C Flush Adapter Kit on the rear head of the A/C compressor using the existing retaining bolts.

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

3. Attach the center hose of the R-134a Manifold Gauge Set to a refrigerant container standing in an upright position.

4. 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.

5. Using the Refrigerant Leak Detector, check for leaks at the compressor shaft seal and the compressor center seal.

6. If a shaft seal leak or an external leak is found at the A/C compressor, install a new A/C compressor.

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