BASIC AIR CONDITION REPAIR 2000 RAM 2500 DIESEL     This is a 134A Cycling Clutch Orifice Tube system which consists of a compressor, condenser, high pressure switch, orifice tube, evaporator and accumulator with low pressure switch.                                                                   The compressor (a Sanden SD7H15) does two things, it moves the refrigerant through the system and it changes the refrigerant from a low pressure low temperatur