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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Manual A/C-Heater Systems - HVAC) >> A/C Compressor Inspection >> External Leak Test

External Leak Test

WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the A/C pressure test adapter 412-093 (T94P-19623-E) or equivalent 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 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 a R-134a 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. See SHAFT SEAL REMOVAL/INSTALLATION  . 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; see REFRIGERANT SYSTEM TESTS  .
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