Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lincoln >> 2002 >> Town Car Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System-General Information >> Diagnosis And Testing >> Climate Control System >> Component Tests >> A/C Compressor-External Leak Test

A/C Compressor-External Leak Test

  1. Install an A/C pressure test adapter on the rear head of the A/C compressor using the existing manifold retaining bolt.
  2. Connect the high and low pressure lines of a manifold gauge set or a refrigerant recovery/recycling station, such as the R-134a A/C Service Center, to the corresponding fittings on the A/C pressure test adapter.
  3. Attach the center hose of the manifold gauge set to a refrigerant container standing in an upright position.
  4. Hand-rotate the compressor shaft 10 complete revolutions to distribute the oil inside the A/C compressor.
  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 leaks at the compressor shaft seal and the compressor center seal.
  7. If a shaft seal leak is found, install a new shaft seal. For additional information, refer to AIR CONDITIONING . If an external leak is found at the center joint of the A/C compressor, install a new A/C compressor.
  8. When the leak test is complete, recover the refrigerant from the compressor.
scientia non olet · About Mike's Workshop Manuals