In the hydraulic anchor windlass system...

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Question 1 of 2066636eee28f7522a1c51eb44

In the hydraulic anchor windlass system illustrated, if the power to the electric motor is on, but the wildcat does not turn, the pressure developed on either side of the system increases to half of the normal operating pressure regardless of the direction of movement in which the servo control is placed, the probable cause is the __________. Illustration GS-0160

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Question 1 of 20

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🔍 Key Concepts

• closed-center vs open-center hydraulic circuits in an anchor windlass system • role of the manual transfer valve in directing flow from the main pump to the motors or to a recirculating/bypass circuit • how system pressure behaves when pump flow is blocked, cross-connected, or relieved

💭 Think About

• If pressure rises to about half normal on both sides no matter which way the servo is moved, what does that tell you about where the pump flow is going? • Which single component in this diagram could mis-route pressure from the main pump so that it feeds or connects both sides of the motor circuit instead of one side only? • Would a failed replenishing pump or a stuck relief valve normally give equal pressure on both sides, or more likely high on one side and low on the other / low everywhere?

✅ Before You Answer

• Trace the flow from the main pump (F) through the control block to the manual transfer valve and then to the motor lines – what happens if that valve is set for the other pump? • Check whether a broken replenishing pump coupling would still allow pressure to build up to half value on both sides, or would it mainly affect make‑up oil and low‑pressure functions. • Consider whether a relief valve stuck closed or an overly high spring set point at "I" would cause symmetrical pressure on both sides, or just overpressure on one side of the circuit.

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