COMPRESSOR 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 for new installation, some of the compressor 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. Rotate the A/C compressor shaft six to eight revolutions while collecting oil in a clean measuring device.

(1) If the amount of oil drained from the old A/C compressor is between 85-142 ml {3-5 oz}, pour the same amount plus 30 ml {1 oz} of clean PAG Compressor Oil ATMOS GU 10 into the new A/C compressor.

(2) If the amount of oil that was removed from the old A/C compressor is greater than 142 ml {5 oz}, pour the same amount drained of clean PAG Compressor Oil ATMOS GU 10 into the new A/C compressor.

(3) If the amount of oil that was removed from the old A/C compressor is less than 85 ml {3 oz}, pour 85 ml {3 oz} of clean PAG Compressor Oil ATMOS GU 10 into the new A/C compressor.

Note

• Service A/C compressors are shipped without compressor oil.

2. For the accumulator tank, drill two 12.7 mm {0.5 in} holes in the accumulator tank cylinder and drain the oil into a calibrated container.

(1) Add a quantity of new oil to match that drained from the old accumulator tank plus 60 ml {2 oz} of clean PAG Compressor Oil.

3. For the evaporator, add 89 ml {3 oz} of clean PAG Compressor Oil to the accumulator tank inlet tube.

4. For the condenser, add 30 ml {1 oz} of clean PAG Compressor Oil to the condenser or the accumulator tank inlet tube.

5. Add 60 ml {2 oz} of clean PAG Compressor Oil to the accumulator tank inlet tube when carrying out each of the following repairs:

(1) installation of a new A/C compressor pressure relief valve

(2) installation of a new refrigerant line

(3) repair of an O-ring seal leak

(4) repair of a charge port leak

6. Installation of new components that do not require discharge of refrigerant and resulting oil loss, such as the A/C cycling switch and the A/C pressure transducer, do not require additional oil.