Refrigerant Oil Adding

REFRIGERANT OIL ADDING

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






Refrigerant Oil Adding for New A/C Compressor Installation

NOTE:This PAG oil adding method is to be used when a new A/C compressor only has been installed. If a new suction accumulator or receiver drier and evaporator core orifice or Thermostatic Expansion Valve (TXV) have also been installed due to system contamination, refer to the appropriate heading.
NOTE:Service A/C compressors are shipped without refrigerant oil.
1. Rotate the old A/C compressor shaft 8 to 10 full rotations clockwise to discharge the PAG oil through the A/C compressor discharge port, while collecting the PAG oil in a clean measuring cup.

- Add the same amount of new PAG oil plus the amount collected during refrigerant recovery plus 30 ml (1 fl oz).

Refrigerant Oil Adding for New Suction Accumulator or Receiver/Drier Installation

NOTE:This refrigerant oil adding method is to be used when a new suction accumulator or receiver drier only has been installed. If a new A/C compressor and evaporator core orifice or TXV have also been installed due to system contamination, refer to the appropriate heading.
1. Drill one 12.7 mm (1/2 in) hole in the old suction accumulator or receiver/drier cylinder and drain the oil into a clean measuring cup.

2. Add the same quantity of new PAG oil plus the amount collected during refrigerant recovery and 60 ml (2 oz).

Refrigerant Oil Adding for Multiple Component Installation After A/C System Contamination

NOTE:This refrigerant oil adding method is to be used when a new A/C compressor, suction accumulator or receiver drier and evaporator core orifice or TXV have been installed due to system contamination and the A/C system has been flushed.
NOTE:Service A/C compressors are shipped without refrigerant oil.
1. Add 60 ml (2 fl oz) directly to the new A/C compressor suction port.

2. Inject the total vehicle PAG oil capacity minus 60 ml (2 fl oz) to the low-side service port during system charging. For the total PAG oil capacity specification, see Specifications.

Oil Injection Using a Dye/Lubricant Injector

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 PAG oil.
1. Evacuate the refrigerant system. See Air Conditioning (A/C) System Evacuation And Charging.

2. Assemble the dye/lubricant injector and the correct adapters from the R-134a Loop/Add On Injector Kit-Set to match the amount of refrigerant compressor oil to be injected.






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






4. Fill the dye/lubricant injector with the correct amount of clean PAG oil.

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

6. Open all the valves and charge the refrigerant system. See Air Conditioning (A/C) System Evacuation And Charging.