Compressor HVAC: Description and Operation

COMPRESSOR
The compressor used on this vehicle is a Nippondenso 10S17. This compressor uses an aluminum swash plate, teflon coated pistons and aluminum sleeveless cylinder walls.

NOISE
Excessive noise that occurs when the air conditioning is being used may be caused by:
- Loose bolts
- Mounting brackets
- Loose compressor clutch
- Excessive high refrigerant operating pressure

Verify the following before compressor repair is performed:
1. Compressor drive belt condition
2. Proper refrigerant charge
3. Thermal expansion valve (TXV) operating correctly
4. Head pressure is normal

COMPRESSOR FRONT SHAFT SEAL
The compressor front shaft seal is not serviceable. If a leak is detected at the shaft seal, the compressor must be replaced as a unit.