Vacuum Motor

Receives vacuum supply from the transducer and produces all mechanical motion within the programmer. It positions the vacuum motor mechanism which actuates a rotary shaft that drives the air-mix door link, moves the blower circuit board wiper arm, moves the vacuum valve operating arm and controls the feedback potentiometer. The vacuum motor mechanism is spring-loaded so, with no vacuum applied, it is fully extended out of the motor ("MAX A/C" position). When approximately 5" Hg is applied, mechanism will be pulled all the way in (full "HEAT" position).