Internally Controlled Variable Displacement A/C Compressor (2.0L EcoBoost)
NOTE:
Variable compressors operate at lower pressures (compared to fixed compressors) and depend on correct system charge for normal operation.
The internally controlled variable displacement A/C compressor has the following characteristics:
- a non-serviceable shaft seal.
- a non-serviceable pressure relief valve installed in the rear of the compressor to protect the refrigerant system against excessively high refrigerant pressures.
- Uses Motorcraft® PAG Refrigerant Compressor Oil YN-12-D. This oil contains special additives required for the A/C compressor. The 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.
The internally controlled variable displacement A/C compressor changes the swash plate angle using an internal valve, springs and linkage, controlled with refrigerant pressure in the compressor housing, to change the displacement of the A/C compressor.