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FIXED DISPLACEMENT COMPRESSOR—MODEL SD709P INDEX page page Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Compressor Clutch/Coil Assembly . . . . . . . . . . . . 38 Compressor Shaft Seal . . . . . . . . . . . . . . . . . . . . 41 Cylinder Head/Valve Plate . . . . . . . . . . . . . . . . . . 44 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Refrigerant System Diagnosis . . . . . . . . . . . . . . . 45 DESCRIPTION The Sanden compressor is a 7 piston design. Sys- tem lubrication is provided by 135 ml 615 ml (4.6 oz. 60.5 oz.) of 500 viscosity refrigerant oil. The clutch used on the compressor consists of 3 ba- sic components: • Front plate • Field coil The pulley and field coil are attached to the front head of the compressor with tapered snap rings. The COMPRESSOR The A/C compressor may be removed and posi- tioned without discharging the refrigerant system. WARNING: REFRIGERANT PRESSURES REMAIN EVEN THOUGH THE ENGINE MAY BE TURNED OFF. BEFORE REMOVING A FULLY CHARGED COMPRESSOR, REVIEW THE SAFETY SAFETY GLASSES MUST BE WORN. REMOVAL (1) Disconnect negative cable from battery. 7, Cooling System) and disconnect compressor clutch (3) Remove refrigerant lines from compressor (if necessary). (4) Remove compressor attaching nuts and bolts. not removed, lift compressor/clutch assembly and tie To install, reverse the removal procedure. COMPRESSOR CLUTCH/COIL ASSEMBLY The magnetic clutch consists of a stationary elec- tro-magnetic coil and a rotating pulley and plate as- The electromagnetic coil is retained on the com- pressor with a snap ring and is dimpled to maintain The pulley and plate assembly are mounted on the compressor shaft. When the compressor is not in operation, the pul- ley free wheels on the clutch hub bearing. When the REMOVAL (1) Insert the 2 pins of the front plate spanner into any 2 threaded holes of the clutch front plate (Fig. (2) Remove clutch front plate using puller. Align puller center bolt to compressor shaft (Fig. 2). Thumb (3) Turn center bolt clockwise with 19 mm (3/4 inch) socket until front plate is loosened. (4) Remove shaft key by lightly tapping it loose with a slot screwdriver and hammer (Fig. 3). (5) Remove the external front housing snap ring by using spread type snap ring pliers (Fig. 4). Fig. 1 Hex Nut Removal 24 - 38 HEATING AND AIR CONDITIONING Ä |