Xterra 2WD L4-2.4L (KA24DE) (2003)
Refrigerant: Testing and Inspection
PRELIMINARY CHECK
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Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C lubricant leakage, damage and corrosion. A/C
lubricant leakage may indicate an area of refrigerant leakage. Allow extra inspection time in these areas when using either an electronic refrigerant
leak detector or fluorescent dye leak detector.
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If dye is observed, confirm the leak with an electronic refrigerant leak detector. It is possible a prior leak was repaired and not properly cleaned.
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When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all system components and connections.
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When searching for refrigerant leaks using an electronic leak detector, move the probe along the suspected leak area at 25 - 50 mm (1 - 2 in)/sec.
and no further than 6 mm (1/4 in) from the component.
NOTE: Moving the electronic leak detector probe slower and closer to the suspected leak area will improve the chances of finding a leak.
Electronic Refrigerant Leak Detector
PRECAUTIONS FOR HANDLING LEAK DETECTOR
When performing a refrigerant leak check, use a J-41995 A/C leak detector or equivalent. Ensure that the instrument is calibrated and set properly per
the operating instructions.
The leak detector is a delicate device. In order to use the leak detector properly, read the operating instructions and perform any specified maintenance.
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Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield washer fluid, solvents and lubricants, may
falsely trigger the leak detector. Make sure the surfaces to be checked are clean. Clean with a dry cloth or blow off with shop air.
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Do not allow the sensor tip of the detector to contact any substance. This can also cause false readings and may damage the detector.
1. Position probe approximately 5 mm (3/16 in) away from point to be checked.
2. When testing, circle each fitting completely with probe.