Fluorescent Leak Detector Dye Injection

Fluorescent Leak Detector: Dye Injection

NOTE:

This procedure is only necessary when recharging the system or when the compressor has seized and must be replaced.

1) Check the A/C system static (at rest) pressure. Pressure must be at least 345 kPa (3.52 kg/cm2, 50 psi).
2) Pour one bottle 7.4 cc (1/4 ounce) of the HFC-134a (R-134a) fluorescent leak detection dye (J-41447) into the HFC-134a (R-134a) refrigerant dye injector (J-41459).

CAUTION:
If repairing the A/C system or replacing a component, pour the HFC-134a (R-134a) fluorescent leak detection dye (J-41447) directly into the open system connection and proceed with the service procedures.

3) Connect the refrigerant dye injector (J-41459) to the low-pressure service valve.
4) Start the engine and switch the A/C system ON.
5) When the A/C system is operating (compressor running), inject one bottle 7.4 cc (1/4 ounce) of HFC-134a (R-134a) fluorescent leak detection dye (J-41447) through the low-pressure service valve using HFC-134a (R-134a) refrigerant dye injector (J-41459). Refer to the manufacturer's operating instructions.
6) With the engine still running, disconnect the HFC-134a (R-134a) refrigerant dye injector (J-41459) from the low-pressure service valve.
7) Operate the A/C system for a minimum of 20 minutes to mix the HFC-134a (R-134a) fluorescent leak detection dye (J-41447) with the A/C system oil. Depending on the leak size, operating conditions and location of the leak, it may take from minutes to days for the HFC-134a (R-134a) fluorescent leak detection dye to penetrate an A/C system leak and become visible.