Fluorescent Leak Detection Method

TOOLS REQUIRED
^ J 41447 Fluorescent Tracer Dye
^ J 41436 R-134a A/C Tracer Dye Injector
^ J 28428-E High Intensity Black Light

IMPORTANT:
^ J 4144715 the only dye approved by General Motors. Not all of the R-134a dyes are compatible with PAG oil. Some dyes decrease the oil Viscosity or chemically react with the oil.
^ PAG oil is water soluble. Condensation on the refrigerant lines or the evaporator core may wash off the PAG oil. Condensation may leak dye off the line or the core and out the condensation drain. Condensation may cause difficulty finding some leaks using the dye detector. Fluorescence at the drain opening indicates a core leak.
^ R-134a tracer dye requires time to work. Depending upon the leak rate, a leak may not become visible for between 15 minutes and 7 days.
^ When the dye is mixed with the PAG oil, the dye remains detectable in the system for 2 years. Do not double the system with dye. This may cause reliability problems. Use only the 1/4 oz charge.

Use a fluorescent leak tracer dye under the following conditions:
^ You know that the system has lost charge.
^ You can not find a leak using the J 39400-A.

The fluorescent leak tracer dye mixes with R-134a PAG oil. When you inspect the leak locations using an ultraviolet light, the dye glows yellow/green.

The dye package contains a refrigerant leak detection notice sticker. Complete the following steps.
1. Complete the sticker information.
2. Place the sticker near the charge label