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203. While at normal sea speed the rudder movement stops, but is restored after changing over power units. At the earliest opportunity the faulty power unit is placed in operation with the following results: The main pump discharge/return pressures are equal and there is no rotation of the rotary actuator, regardless of the direction of helm input. Which of the following is the probable cause of the failure
Loss of both steering directions and equal pump pressures indicate a failure in a common component. A burned-out solenoid coil No. 2 in component «F» bypasses pump discharge, resulting in equal pressures and no rudder movement.
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