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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 530 (HVAC CONTROL SYSTEM)DESCRIPTION AND OPERATIONAIR CONDITIONINGA/C COMPRESSOR AND CLUTCH ASSEMBLY
2010 Mercury Mariner Hybrid, AWD

A/C Compressor and Clutch Assembly

2010 Mercury Mariner Hybrid, AWDSECTION A/C Compressor and Clutch Assembly
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. 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 variable scroll compressor is serviced only as an assembly. The A/C clutch, A/C clutch pulley and the A/C clutch field coil are serviceable.

The variable scroll A/C compressor has the following characteristics:

  • A variable capacity function controlled by a suction pressure sensing device.
  • A fixed and orbiting scroll to provide refrigerant compression.
  • A non-serviceable shaft seal.
  • The A/C compressor uses PAG Refrigerant Compressor Oil YN-12-D WSH-M1C231-B. This oil contains special additives necessary for the A/C compressor.

The A/C compressor contains a thermal cutout switch which senses the compressor housing temperature. The switch will disengage the A/C compressor clutch if the housing temperature exceeds 120°C (247°F).

Fig 1: Identifying A/C Compressor & Clutch Assembly
G04658006Courtesy of FORD MOTOR CO.

The magnetic A/C clutch has the following characteristics:

  • It drives the compressor shaft.
  • When battery positive voltage (B+) is applied to the A/C clutch field coil, the clutch disc and hub assembly is drawn toward the A/C clutch pulley.
  • The magnetic force locks the clutch disc and hub assembly and the A/C clutch pulley together as one unit, causing the compressor shaft to rotate.
  • When B+ is removed from the A/C clutch field coil, springs in the clutch disc and hub assembly move the clutch disc away from the A/C clutch pulley.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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