A solenoid direct-acting three-position spring-centered directional control valve is used in a hydraulic system to control a linear actuator. When the remote push button is depressed to extend the actuator it fails to move, even though the pump is in operation. Which of the following statements represents the cause?
Official USCG Answer & Rule Citation
Correct Answer: Option D — Any one of the above will cause the actuator to not move.
Under USCG National Maritime Center examination standards, the accepted correct answer is: Any one of the above will cause the actuator to not move..
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