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Compressor, External Leak Test

WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For in-depth leak testing procedures, see LEAK TESTING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING.
  1. Install A/C pressure test adapter on rear head of compressor using existing manifold retaining bolt.
  2. Connect high and low pressure lines of a manifold gauge set to corresponding fittings on A/C pressure test adapter.
  3. Attach center hose of manifold gauge set to a refrigerant container standing in an upright position.
  4. Hand-rotate compressor shaft 10 complete revolutions to distribute oil inside compressor.
  5. Open low pressure gauge valve, high pressure gauge valve and valve on refrigerant container to allow refrigerant vapor to flow into compressor.
  6. Using Automatic Calibration Halogen Leak Detector, check for leaks at compressor shaft seal and compressor center seal.
  7. If a shaft seal leak is found, install a new shaft seal. If an external leak is found at center joint of compressor, install a new compressor.
  8. When leak test is complete, recover refrigerant from compressor.