A/C Compressor and Clutch Assembly: Notes

NOTE: Internal FS20 A/C compressor components are not serviced separately. The A/C compressor is serviced only as an assembly. The clutch disc and hub, A/C compressor pulley and bearing and clutch field coil are serviceable.

NOTE: Installation of a new receiver/drier cartridge is not required when repairing the A/C system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the receiver/drier cartridge.

The FS20 A/C compressor uses the following:

A non-serviceable shaft seal.
A pressure relief valve installed in the rear of the compressor to protect the refrigerant system against excessively high refrigerant pressures.
PAG oil or equivalent. This oil contains special additives required for the A/C compressor.
- PAG oil may have some slightly dark-colored streaks while maintaining normal oil viscosity. This is normal for this A/C compressor because of break-in wear that can discolor the oil.

Use standard oil matching procedures when installing new compressors.