Refrigerant Oil Adding

Special Tool(s) / General Equipment 

Check 

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

Courtesy of FORD MOTOR COMPANY

Filling 

• 1.
  
  Drain as much oil from the old A/C compressor.

• 2.
  
  Remove the suction and discharge port seal cap on the new A/C compressor.

• 3.
  
  Drain as much oil from the new A/C compressor.

• 4.
  
  Measure the amount of oil drained for the old A/C compressor and add the same amount of new oil to the new A/C compressor.

• 5.
  
  Install the suction and discharge port seal cap on the new A/C compressor.

Activation 

• 1.
  
  
  NOTE: 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.
  NOTE: Motorcraft® Electric A/C Compressor Oil YN-32 only must be used as a refrigerant system lubricant. Addition of any oil other than Motorcraft® Electric A/C Compressor Oil YN-32 to the refrigerant system will damage the A/C compressor and contaminate the refrigerant system.
  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 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.

• 2.
  
  
  NOTE: 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® Electric A/C Compressor Oil YN-32 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® Electric A/C Compressor Oil YN-32floz (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(1).	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(2).	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.
  (1) If an excessive amount of Motorcraft® Electric A/C Compressor Oil YN-32 is lost due to a hose rupture/separation or other damage, the total system Motorcraft® Electric A/C Compressor Oil YN-32 capacity must be added. Also, it is necessary to replace the receiver/drier. (2) The amount specified may be used for one or multiple O-ring leak repairs. Do not multiply the Motorcraft® Electric A/C Compressor Oil YN-32 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 

• 3.
  
  
  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® Electric A/C Compressor Oil YN-32.

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

• 4.
  
  Assemble the dye/lubricant injector and the correct adapters to match the amount of refrigerant compressor oil to be injected.

• 5.
  
  Verify that all the valves on the dye/lubricant injector are closed.

• 6.
  
  Fill the dye/lubricant injector with the correct amount of clean, new Motorcraft® Electric A/C Compressor Oil YN-32.

• 7.
  
  Install the dye/lubricant injector between the low-side service gauge port valve and the refrigerant service station or manifold gauge set.

• 8.
  
  Open all valves and charge the refrigerant system. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging .