Fluorescent Leak Detectors

Tools Required:
J 41447 Tracer Dye J 41436 Tracer Dye Injector
J 28428 High Intensity Black Light

R-134a refrigerant is uniquely different from R-12 refrigerant used in the past and may require additional methods to detect leaks. The R-134a molecule is smaller than the R-12 molecule and can leak through smaller openings. Also, R-134a does not contain chlorine which the electronic leak detectors find easy to identify. The tracer dye method is meant to be used in conjunction with the electronic leak detector and will pinpoint smaller leaks undetected by using the electronic leak detector. R-134a tracer dye requires time. Depending upon the rate of leak, it may take up to 7 days for the leak to become visible.


Important
^ Tracer dye J 41447 has been developed to be used only with R-134a-equipped vehicles or vehicles that have been retrofitted from R-12 to R-134a.
^ Only J 41447 tracer dye is recommended for use in the R-134a system. Use of any other products may affect system reliability and cause premature compressor failure.
^ Use only a 1/4-oz. charge of tracer dye. Larger amounts may compromise the reliability of the A/C system.
^ After adding tracer dye, clean service valves and surfaces of residual dye with GM Engine Degreaser GM P/N 1050436 or equivalent to prevent false diagnosis.

DYE INJECTION

^ Charged systems can be injected with tracer dye by using J 41436 Tracer Dye Injector along with the instructions provided.
^ Discharged systems can have the tracer dye added to a replaced component, or can be added using the ACR4 unit.