DESCRIPTION
A/C COMPRESSOR
This A/C system uses a Zexel DKS-17DS ten cylinder, double-acting swash plate-type A/C compressor (1). This A/C compressor has a fixed displacement of 175.5 cubic centimeters (10.7 cubic inches) and has the suction and discharge ports (2) located on the compressor cylinder block (5).
The DKS-17DS compressor uses a electrically operated clutch (6) to engage and disengage it from the engine accessory drive belt. This A/C compressor also has an integral high pressure relief valve (4) located on the cylinder head (3) and a label which identifies the use of R-134a refrigerant.
HIGH PRESSURE RELIEF VALVE
A high pressure relief valve is located on the compressor cylinder head at the rear of the A/C compressor (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/COMPRESSOR-A/C - DESCRIPTION). This mechanical valve is designed to vent refrigerant from the A/C system to protect against damage to the A/C compressor and other A/C system components caused by condenser air flow restriction or an overcharge of refrigerant.