Fleetwood FWD V8-300 4.9L (1993)
Cruise Control Servo: Description and Operation
Servo Unit
The servo unit is essentially a vacuum activated variable diaphragm. It positions the throttle when the system is in operation through a bead chain
actuator, combination chain and cable actuator or rod actuator depending on model of vehicle.
To operate the servo unit, a controlled vacuum provided by the servo unit solenoid valve is applied to the servo diaphragm, drawing the diaphragm
inward, pulling the actuator to operate the throttle.
