The steering drive unit is the muscle that moves the rudder when your arms are tired. It sits tucked away, working quietly to track your heading while you manage the rest of the boat. Since it lives in the damp environment of the lazarette or cockpit, the gears inside occasionally need a little attention. If the motor sounds strained or jerky, it might be time to inspect the internal linkage for grit or dried-up grease. A well-maintained drive unit keeps the boat pointed true without making a scene.
Raymarine steering drive unit
Robust steering drive units for precise autopilot control.