Through Model Year 2010

A/C Compressor

Description






• Denso 10S20 compressor shown. Denso 10SR15 and 10SR17 compressors similar.

Vehicles with the 3.8L engines and the optional rear HVAC system are equipped with the Denso 10SR17 A/C compressor (1). Vehicles with the 4.0L engine are equipped with the Denso 10S20 A/C compressor. All A/C compressors are a fixed displacement, five double-acting piston, reciprocating swash plate-type compressor. All compressors are clutch operated with suction and discharge ports (2) and have an integral high pressure relief valve (3) located near the rear of the compressor.

A label identifying the use of R-134a refrigerant and ND-8 PAG oil is located on each A/C compressor.

Operation

The A/C compressor is driven by the engine through an electric clutch, drive pulley and belt arrangement. The A/C compressor is lubricated by refrigerant oil that is circulated throughout the refrigerant system with the refrigerant.

The A/C compressor draws in low-pressure refrigerant vapor from the A/C evaporator through its suction port. It then compresses the refrigerant into a high-pressure, high-temperature refrigerant vapor, which is then pumped to the A/C condenser through the compressor discharge port.


Be certain to adjust the refrigerant system oil level when replacing an A/C compressor. Refer to => [ A/C Compressor Refrigerant Oil Charge ] A/C Compressor Refrigerant Oil Charge.

The A/C compressor cannot be repaired and must be replaced if inoperative or damaged. The compressor clutch, pulley and bearing assembly, and clutch field coil are available for service. If an internal failure of the A/C compressor has occurred, the A/C receiver/drier must also be replaced. Refer to => [ Front A/C Receiver Drier ] Front A/C Receiver Drier.