Compressor HVAC: Description and Operation
COMPRESSOR-A/CDESCRIPTION
The A/C system uses a Denso 10S20, five double-acting piston, reciprocating swash plate-type A/C compressor (1) on all models. This A/C compressor has a fixed displacement of 200 cubic centimeters (12.2 cubic inches) and has both the suction and discharge ports (2) located at the rear of the compressor on the cylinder head (3).
A label identifying the use of R-134a refrigerant is located on the 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.
The A/C compressor cannot be repaired and, if faulty or damaged, it must be replaced. 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 receiver/drier must also be replaced.