Refrigerant Oil Adding — 2016 workshop reference 3634

additional dye to the refrigerant system before diagnosing leaks, even if a significant amount of refrigerant has been removed from the system. Replacement suction accumulators, receiver driers and receiver drier elements are shipped with a 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: Before using the R-134a Fluorescent Dye Injector/Refrigerant Oil Injector Set 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.

Evacuate the refrigerant system. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging procedure in Group 412.

3. Assemble the dye/oil injector using the correct adapters to match the amount of refrigerant compressor oil to be injected.

4. Verify that all the valves on the dye/oil injector are closed.

5. Fill the dye/oil injector with the correct amount of clean, new Motorcraft® PAG Refrigerant Compressor Oil (YN-12-D).

6. Install the dye/oil injector between the low-side service gauge port valve and the R-134a Air Conditioning Service Unit or R-134a Air Conditioning Manifold Gauge Set.

7. NOTE: 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.

Open all valves and charge the refrigerant system. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging procedure in Group 412.

Source reference 3634

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.