Aviator 2WD V8-4.6L DOHC (2003)
Refrigerant Oil: Service and Repair
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. NOTE: Service A/C compressors are shipped without compressor oil.
Rotate the old A/C compressor shaft six to eight revolutions while collecting oil in a clean measuring device.
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If the amount of oil drained from the old A/C compressor is between 85-142 ml (3-5 ounces), pour the same amount plus 30 ml (1 ounce) of
clean PAG oil into the new A/C compressor.
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If the amount of oil that was removed from the old A/C compressor is greater than 142 ml (5 ounces), pour the same amount drained of clean
PAG oil into the new A/C compressor.
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If the amount of oil that was removed from the old A/C compressor is less than 85 ml (3 ounces), pour 85 ml (3 ounces) of clean PAG oil into
the new A/C compressor.
2. For the receiver/drier, drill two 1/2 inch holes in the suction receiver/drier cylinder and drain the oil into a calibrated container.
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Add a quantity of new oil to match that drained from the old receiver/drier plus 60 ml (2 ounces) of clean PAG oil.
3. For the A/C evaporator core, add 89 ml (3 ounces) of clean PAG oil to the receiver/drier inlet tube.
4. For the A/C condenser core, add 30 ml (1 ounce) of clean PAG oil to the A/C condenser core or the receiver/drier inlet tube.
5. Add 60 ml (2 ounces) of clean PAG oil to the receiver/drier inlet tube when carrying out each of the following repairs:
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installation of a new thermostatic expansion valve
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installation of a new A/C compressor pressure relief valve
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installation of a new refrigerant line
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repair of an O-ring seal leak
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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 refrigerant containment switch, do not
require additional oil.
