The hydraulic linear drive system is designed for boats with existing mechanical steering systems, not hydraulic steering systems. It provides a totally isolated autopilot steering system consisting of:
Hydraulic ram: a self-contained autopilot steeringcylinder with a load limiting system and a built in clutch (to allow friction-free steering when the autopilot is not in use).
Reversing hydraulic pump: powers the hydraulic ram.
Hydraulic fluid reservoir: supplies hydraulic fluid to the system.
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