Fluorescent Dye Leak Detection — 2016 workshop reference 3608

fluorescent dye wafer included in the desiccant bag which dissolves after approximately 30 minutes of continuous A/C operation. It is not necessary to add dye after flushing the refrigerant system because a new suction accumulator, receiver drier or receiver drier element is installed as part of the flushing procedure.

NOTE: If the system has been out of refrigerant through the winter the dye at the leak point may have oxidized and may not fluoresce. If this happens, recharge and operate the A/C system to circulate the oil and allow any residual dye to show up at the leak point. It is important to understand that dye adheres to the oil not the refrigerant; the refrigerant carries the oil out of the leak point.

NOTE: Before using the R-134a Fluorescent Dye Injector for the first time, refer to the equipment manufacturer's instructions.

NOTE: Refrigerant system pressure should be between 413-551 kPa (60-80 psi) at 24° C (75° F) with the engine off and cool.

10. Verify the valves on the R-134a Fluorescent Dye Injector are closed.

Fluorescent Dye Leak Detection — original illustration 1, reference 3608Original colors & callouts · Select to enlarge

11. Fill the R-134a Fluorescent Dye Injector reservoir with 7.4 ml (0.25 fl oz) of fluorescent dye.

Fluorescent Dye Leak Detection — original illustration 2, reference 3608Original colors & callouts · Select to enlarge

12. Install the R-134a Fluorescent Dye Injector between the high-pressure and low-pressure service gauge port valves. Use the General Equipment: Fluorescent Dye Injector

13. NOTICE: Make sure all tools and hoses are clear of the engine cooling fan and drive belt before

starting the engine. Failure to keep tools and hoses clear from the engine cooling fan and drive belt results in damage to the tools and/or vehicle.

With the A/C off, start the engine. Allow engine speed to stabilize below 1,000 rpm.

Source reference 3608

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.