Check For Leaks

SPECIAL TOOLS

Description Tool Number
A/C Pressure Test Adapter T94P-19623-E
R-134a Manifold Gauge Set or equivalent 176-0032
Rotunda R-134a Automatic Calibration Halogen Leak Detector 023-R1003

EXTERNAL LEAK TEST
1. Remove the A/C compressor from the vehicle.
2. Install A/C Pressure Test Adapter to the A/C compressor using the existing manifold bolt.




3. Connect the high and low pressure lines of R-134a Manifold Gauge Set to the fittings on the test adapter.
4. Attach the center hose of R-134a Manifold Gauge Set to a refrigerant container standing in an upright position.
5. Hand rotate the compressor shaft ten revolutions to distribute the oil inside the A/C compressor.
6. Open the low and high pressure gauge valves and the valve on the refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.
7. Use R-134a Automatic Calibration Halogen Leak Detector to check for leaks at the compressor shaft seal and the compressor center seal.
8. If a shaft seal leak is found, install a new shaft seal. If a leak is found at the compressor center seal, install a new A/C compressor.
9. When the leak test is finished, close the manifold gauge valves and the refrigerant container valve.
10. Slowly remove the gauge set hoses from the pressure test adapter. Allow the refrigerant in the compressor to escape.
11. Install the A/C compressor on the vehicle.
12. Evacuate, charge and leak test the system. Test system for proper operation. Service and Repair