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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1018 (CLIMATE CONTROL)DESCRIPTION AND OPERATIONAIR CONDITIONINGA/C COMPRESSOR AND CLUTCH ASSEMBLY
2009 Mercury Milan Premier, 3.0 1, AWD

A/C Compressor and Clutch Assembly

2009 Mercury Milan Premier, 3.0 1, AWDSECTION A/C Compressor and Clutch Assembly
WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Internal 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.

The A/C compressor has the following characteristics:

  • A non-serviceable shaft seal
  • A pressure relief valve is installed in the rear of the compressor to protect the refrigerant system against excessively high refrigerant pressures
  • The A/C compressor uses PAG oil or equivalent. This oil contains special additives required for the A/C compressor
  • The A/C compressor 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
Fig 1: A/C Compressor Clutch Assembly
GF0004379Courtesy of FORD MOTOR CO.
Item Part Number Description
1 W712303 A/C clutch disc and hub bolt
2 19D786 A/C clutch disc and hub
3 19D648 A/C clutch disc and hub spacers
4 W712302 A/C compressor pulley snap ring
5 19D784 A/C compressor pulley
6 W712301 A/C clutch field coil snap ring
7 19D798 A/C clutch field coil

When battery voltage is applied to the A/C compressor clutch field coil, the clutch plate and hub assembly is drawn toward the A/C clutch pulley. The magnetic force locks the clutch plate and hub assembly and the A/C clutch pulley together as one unit, causing the compressor shaft to rotate. When battery voltage is removed from the A/C compressor clutch field coil, springs in the clutch plate and hub assembly move the clutch plate away from the A/C clutch pulley.

RENDER: 1.0x

NO RELATED

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