DESCRIPTION
A/C COMPRESSOR
NOTE: Typical clutchless Denso A/C compressor shown.
The A/C system uses a Denso 5SE12C clutchless, five cylinder, variable displacement swashplate type A/C compressor (1). This A/C compressor has a total displacement of 126 cubic centimeters (7.6 cubic inches) and a high pressure relief valve (2) and a control valve (3) located on the back cover. The A/C compressor is secured with three bolts to the compressor bracket located near the oil pan at the front of the engine.
A label identifying the use of R-134a refrigerant is located on the A/C compressor.
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.
HUB AND PULLEY
NOTE: Typical clutchless A/C compressor pulley and drive hub shown.
The non-servicable A/C compressor hub and pulley assembly provides the means to drive the A/C compressor using the engine accessory drive belt. The hub and pulley assembly consists of an aluminum drive hub (1) with composite tabs (2) that are positioned between rubber dampeners (3), which are located inside of a composite pulley (4).
The A/C pulley has a bearing (5) which is retained to the nose of the A/C compressor with a snap ring (6). The drive hub and shim (7) are retained to the compressor shaft by use of left handed threads.