Fluorescent Leak Detectors

Tools Required
^ J41447Tracer Dye
^ J41436 Tracer Dye Injector
^ Injector
^ J28428-E High Intensity Black Light

Important:
^ J 41447 has been developed to be used only with the following types of vehicles:
- R-134a-equipped vehicles
- Vehicles that have been retrofitted from R-12 to R-134a
^ Only J41447is recommended for use in the R-134a system.
Use of any other products may cause the following conditions:
- Affect system reliability
- Cause premature compressor failure
^ Use only a 1/4 oz charge of J 41447.
Larger amounts may compromise the reliability of the A/C system.
^ After adding J41447, clean the residual dye off of the service valves and surfaces. This will prevent a false diagnosis.
Use GM Engine Degreaser GM P/N 1050436 or the equivalent.
R-134a refrigerant is different from R-12 refrigerant which was used in the past. R-134a may require additional methods in order to detect leaks. The differences between R-134a and R-12 are listed below:
^ The R-134a molecule is smaller than the R-12 molecule.
This allows the R-134a molecule to leak through smaller openings.
^ The R-134a does not contain chlorine.
The electronic leak detectors find chlorine easy to identify.
Use the tracer dye method in conjunction with the electronic leak detector. This will allow you to discover smaller leaks which may be undetected using the electronic leak detector. R-134a tracer dye requires time. Depending upon the rate of the leak, the leak may take up to 7 days in order to become visible.

Dye Injection

^ You can inject charged systems with tracer dye by using J41436, along with the instructions provided.
^ For discharged systems, add the tracer dye in one of the following ways:
- Add the tracer dye to a replaced component.
- Add the tracer dye using the ACR4 unit.