Cruise Control: Description: Transducer

Unit has two primary functions controlled by pull-in of solenoid. First, it is a vacuum switch and when engaged, it supplies vacuum to a "T" fitting. Second, it allows a metering valve clutch spring to grasp the rubber clutch which is fixed to speed cup spindle. A variation in speed results in a slight rotation of rubber clutch which moves air valve and meters a variable quantity of air to system where it blends with vacuum. Servo unit receives this controlled vacuum and maintains selected speed. Speedometer cable from transmission drives transducer speed sensing unit and transducer output cable drives speedometer head.