Help me understand my Steering system
Iíve never really understood how my steering system works. I have a helm pump behind the steering wheel with hydraulic lines running to an actuator thatís connected to a tie rod that moves both rudders.
My question here is how does the helm pump provide the necessary hydraulic pressure to the rudder actuator. The steering wheel is very easy to turn without much resistance.
Second question, how does the autopilot control the steering. On my system I have all Raython equipment. The autopilot control head is a Raython ST-6000+ and there is also a type 100 course computer. Electrically connected to the course computer is an auto-pilot motor, a flux gate compass and the ST-6000+ control head. Additionally the course computer has a sea talk input from the chart plotter and ST50 Tri Data depth and speed gauge.
When the autopilot is engaged it somehow disengages steering from the wheel. I can turn the wheel but there is no response. Of course when the A/P is off steering is back to the wheel.
So presumably the autopilot motor engages the helm pump and at the same time disengages the wheel. I never hear any clicking or engaging/disengaging of relays or solenoids when this happens.
Can anyone shed some light on this.
Carver 355 ACMY Twin Cummins Diesels