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Home >> Ford >> 2002 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 311 (Climate Control System-General Information) >> Diagnosis And Testing >> Climate Control System >> Component Tests >> A/C Compressor-External Leak Test
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A/C Compressor-External Leak Test

WARNING: This page is about a different car, the 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
  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.
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