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Ford Taurus Refrigerant Oil Checking

Q. I bought a rebuilt A/C compressor for a 1998 Ford Taurus. I don't have the money to completely repair the A/C. Can I just install the compressor with clutch and run the belt over it without having to put oil in it or fixing anything else? And if I need oil in it where do I put it?

Ford Taurus Refrigerant Oil Checking

A. Here is the procedure for checking the refrigerant oil and refilling it.

The A/C compressor uses a special refrigerant oil, Motorcraft YN-12b or equivalent meeting Ford specification WSH-M1C231-B. This oil contains special additives required for the A/C compressor. It is important that only the specified type and quantity of refrigerant oil be used in the A/C compressor. If there is surplus oil in the system, too much oil will circulate with the refrigerant, reducing the cooling capacity of the system. Too little oil will result in poor lubrication of the A/C compressor.

During A/C Compressor Replacement:
Whenever the A/C compressor is replaced and evidence of debris is present within the A/C system, the following must also be accomplished:

  • Replace the suction accumulator/drier.
  • Replace the A/C evaporator core orifice.
  • Clean the A/C system by flushing or filtering.

NOTE: Service A/C compressors are shipped without compressor oil.

When reinstalling the existing A/C compressor or installing a new A/C compressor, the A/C compressor must be serviced with the correct amount of Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B as follows:

  1. Obtain a clean container that can also be used as a measuring device.
  2. Place the A/C clutch on the A/C compressor shaft so the shaft can be rotated.

Ford Taurus Refrigerant Oil Checking

  1. Rotate the shaft by hand six to eight revolutions, collecting the oil in a clean measuring device.
  2. If the amount of oil drained from the old A/C compressor is between 3 to 5 ounces, pour the same amount plus 1 ounce of clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B into the new A/C compressor.
  3. If the amount of oil that was removed from the old A/C compressor is greater than (5 ounces, pour the same amount drained of clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B into the new A/C compressor.
  4. If the amount of refrigerant oil that was removed from the old A/C compressor is less than 3 ounces, pour 3 ounces of clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B into the new A/C compressor.

Having it sit there with the belt on will not hurt the compressor. Just leave it unplugged so it can't be turned on accidentally. It might be a good idea, after you check and fill the refrigerant oil, to leave the seals on the A/C compressor to prevent moisture from getting into the A/C compressor through any leaks in the A/C system. Also plug the lines to keep them clean.

Additional Information provided courtesy of ALLDATA

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