Refrigerant Oil Adding
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 PAG 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.
- Refer to the chart below for refrigerant oil adding amounts and methods of installation.MATERIAL SPECIFICATION
Component PAG Oil Amount Method of Adding A/C Compressor Refer to ADDING REFRIGERANT OIL AFTER A/C COMPRESSOR REPLACEMENT Add or remove directly through A/C compressor low-side port before installation. Suction Accumulator or Receiver/Drier Refer to ADDING REFRIGERANT OIL AFTER NEW SUCTION ACCUMULATOR OR RECEIVER/DRIER REPLACEMENT Add directly to suction accumulator inlet port or inject to low-side service port during system charging. Evaporator Core 45 ml (1.5 fl oz) added to the amount collected during refrigerant recovery Add directly to evaporator core inlet tube or inject to low-side service port during system charging. Condenser Core 60 ml (2 fl oz) added to the amount collected during refrigerant recovery Add directly to condenser core inlet or inject to low-side service port during system charging. Evaporator Core Orifice or Thermostatic Expansion Valve (TXV) The amount collected during refrigerant recovery Inject to low-side service port during system charging. A/C Pressure Relief Valve 60 ml (2 fl oz) added to through the amount collected during refrigerant recovery Inject to low-side service port during system charging. Refrigerant Hose/Line 60 ml (2 fl oz) added to the amount collected during refrigerant recovery (1) Inject to low-side service port during system charging. O-ring Leak Repair 60 ml (2 fl oz) added to the amount collected during refrigerant recovery (2) Inject to low-side service port during system charging. Service Port Leak Repair 60 ml (2 fl oz) added to the amount collected during refrigerant recovery Inject to low-side service port during system charging. (1) If an excessive amount of PAG oil is lost due to a hose rupture/separation or other damage, the total system PAG oil capacity must be added. (2) The amount specified may be used for one or multiple O-ring leak repairs. Do not multiply the PAG oil amount by the number of O-ring leaks being repaired.