If it is necessary to prevent the rudder from moving while a repair is made on the steering system using the illustrated actuator __________. GS-0116

Correct Answer: Option A — secure the valves in the supply and return lines

Securing the supply and return valves isolates the hydraulic actuators from the power units. This prevents any unintended movement of the rudder due to pressure fluctuations or pump operation while personnel are performing maintenance, ensuring a safe, locked-out condition for the steering gear system during repairs.