Compressor HVAC: Description and Operation

A/C Compressor:

The A/C compressor used on this vehicle can be one of two models, depending upon the transmission in the vehicle. Vehicles with a manual transmission use the Nippondenso 10S15 compressor, while vehicles with an automatic transmission use the Nippondenso 10S17 unit. These compressors use an aluminum swash plate, teflon coated pistons and aluminum sleeveless cylinder walls. A high pressure cut out switch is located on the back cover of the compressor.

The A/C compressor is secured to the lower front strut-to-engine bracket with four bolts. The lower front strut-to-engine bracket is located on the lower,forward skirt of the engine block which is located in the right front corner of the engine compartment.

The A/C 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. The compressor pumps the high-pressure refrigerant vapor 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 clutch coil are available for service.