Ford Explorer: Climate Control System - General Information / General Procedures - Refrigerant Oil Adding - Hybrid Electric Vehicle (HEV), Vehicles With: R1234YF Refrigerant

Special Tool(s) / General Equipment

Check

NOTICE: Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) only must be used as a refrigerant system lubricant for High Voltage Battery Electric vehicles. Addition of any oil other than Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) to the High Voltage Battery Electric vehicle refrigerant system will damage the electric A/C compressor and contaminate the refrigerant system.

NOTICE: Do not use the R-1234yf Refrigerant Management Machine built-in oil injection system to inject Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) to the refrigerant system on High Voltage Battery Electric vehicles equipped with an electric A/C compressor if it has been previously used to inject PAG oil. For High Voltage Battery Electric vehicles, use only clean manual injection tools. Injection of Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) into a High Voltage Battery Electric vehicle with equipment previously used with PAG oil will contaminate and damage the High Voltage Battery Electric A/C system.

NOTICE: During normal A/C operation, oil is circulated through the system with the refrigerant, and a small amount is retained in each component. If certain components of the system are removed, some of the refrigerant oil will go with the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the new part.

NOTICE: Perform an oil balance when replacing a compressor where system flush will not be performed.

NOTE: The purpose of oil balance is to make sure the amount of oil in the system is not increased or decreased as a result of the replacement component(s).

NOTE: New compressors come fully charged with Motorcraft® R-1234yf Refrigerant POE Oil (YN-34). The old compressor is only partially charged because some of the oil is elsewhere in the A/C system.

1. Visually check the A/C compressors old and new.
   

Filling

NOTICE: Perform an oil balance when replacing a compressor where system flush will not be performed.

NOTE: The purpose of oil balance is to make sure the amount of oil in the system is not increased or decreased as a result of the replacement component(s).

NOTE: Service compressors come charged with Motorcraft® R-1234yf Refrigerant POE Oil (YN-34). The old compressor is only partially charged because some of the oil is elsewhere in the A/C system.

1. Remove the suction and discharge port seal cap on the new A/C compressor.
   

1. Add the amount of oil collected during recovery to new service compressor.
   

1. Install the suction and discharge port seal cap on the new A/C compressor.
   

1. If the system is being flushed you must add oil to the service compressor to match the system specification stated on the underhood label.
   

Activation

1. NOTICE: An A/C refrigerant analyzer must be used before the recovery of any vehicle's A/C refrigerant. Failure to do so puts the shop's bulk refrigerant at risk of contamination. If the vehicle's A/C refrigerant is contaminated, refer the customer to the service facility that carried out the last A/C service. If the customer wishes to pay the additional cost, use the A/C recovery equipment that is designated for recovering contaminated A/C refrigerant. Dispose of all contaminated A/C refrigerant as hazardous waste. For all equipment, follow the manufacturer's instructions.

   NOTICE: Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) only must be used as a refrigerant system lubricant. Addition of any oil other than Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) to the refrigerant system will damage the A/C compressor and contaminate the refrigerant system.

   NOTICE: During normal A/C operation, oil is circulated through the system with the refrigerant, and a small amount is retained in each component. If certain components of the system are removed, some of the refrigerant oil will go with the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the new part.

1. NOTICE: Make sure the equipment is clean and free of foreign material.

   NOTE: During normal A/C operation, oil is circulated through the system with the refrigerant, and a small amount is retained in each component. If certain components of the system are removed, some of the Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) stays inside the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the new part.

   Refer to the chart below for refrigerant oil adding amounts and methods of installation.

     Refrigerant Oil Adding (When new components are installed)

   
   

   	Motorcraft® R-1234yf Refrigerant POE Oil (YN-34)  fl oz ( ml)	Method of Adding
   After installing the A/C Compressor.	Service compressor contains full system charge of oil. Oil matching required plus amount collected during recovery.	Refer to oil adding steps above.
   After installing the receiver/drier.	2 fl oz (60 ml) plus the amount collected during refrigerant recovery.	Inject to low-side service port during system charging.
   After installing the receiver/drier element.	1 fl oz (30 ml) plus the amount collected during refrigerant recovery.	Inject to low-side service port during system charging.
   After installing the condenser core.	1.5 fl oz (45 ml) plus the amount collected during refrigerant recovery.	Add directly to inlet port or inject to low-side service port during system charging.
   After installing the condenser core, and the receiver/drier element.	2 fl oz (60 ml) plus the amount collected during refrigerant recovery.	Add directly to inlet port or inject to low-side service port during system charging.
   After installing the evaporator core.	1.5 fl oz (45 ml) plus the amount collected during refrigerant recovery.	Add directly to inlet port or inject to low-side service port during system charging.
   After installing/reassembling the thermostatic expansion valve.	Amount collected during refrigerant recovery.	Inject to low-side service port during system charging.
   After installing a refrigerant Hose/Line.	2 fl oz (60 ml) plus the amount collected during refrigerant recovery a.	Inject to low-side service port during system charging.
   After an O-ring Leak Repair.	1 fl oz (30 ml) plus the amount collected during refrigerant recovery b.	Inject to low-side service port during system charging.
   After a service port leak repair.	Amount collected during refrigerant recovery.	Inject to low-side service port during system charging.
   a If an excessive amount of Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) is lost due to a hose rupture/separation or other damage, the total system Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) capacity must be added. Also, it is necessary to replace the receiver/drier.
   b The amount specified may be used for one or multiple O-ring leak repairs. Do not multiply the Motorcraft® R-1234yf Refrigerant POE Oil (YN-34) amount by the number of O-ring leaks being repaired.

   Use the General Equipment: Air Conditioning Service Unit

Oil Injection Using a Dye/Lubricant Injector

1. NOTE: Fluorescent refrigerant system dye is added to the refrigerant system at the factory to assist in refrigerant system leak diagnosis using a Rotunda-approved UV black light. It is not necessary to add 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 and receiver/driers 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 or receiver/drier is installed as part of the flushing procedure. Replace hose/accumulator, receiver/drier or receiver/drier element.

   NOTE: If fluorescent leak detection dye is also to be added during A/C charging, the dye may be added to the dye/lubricant injector, from the R-134a Loop/Add On Injector Kit-Set, along with the new Motorcraft® R-1234yf Refrigerant POE Oil (YN-34).

   Evacuate the refrigerant system. Refer to the appropriate section in Group 412 for the procedure.
   

1. Assemble the dye/lubricant injector and the correct adapters to match the amount of refrigerant compressor oil to be injected.
   

1. Verify that all the valves on the dye/lubricant injector are closed.
   

1. Fill the dye/lubricant injector with the correct amount of clean, new Motorcraft® R-1234yf Refrigerant POE Oil (YN-34).
   

1. Install the dye/lubricant injector between the low-side service gauge port valve and the refrigerant service station or manifold gauge set.
   

1. Open all valves and charge the refrigerant system. Refer to the appropriate section in Group 412 for the procedure.