Compressor HVAC: Description and Operation

The air conditioning system uses a Nippondenso 7SBU16C double-acting, variable swash plate-type compressor on all models. This compressor has a label identifying the use of R-134a refrigerant and both the suction and discharge ports located on the cylinder head.

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

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

The compressor cannot be repaired. If faulty or damaged, the entire compressor assembly must be replaced. The compressor clutch, pulley, and coil, are available for service.