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Winch System Remote Control Pressure Vent
[NOTICE] The remote control valve are connected to the hydraulic pilot control valve at the points having the same symbols such as "a1", "a2", "b1", and "b2". 1. The main winch is controlled by the hydraulic pilot method. The pilot pressure from the remote control valve controls the hydraulic pilot control valve. The auxiliary winch employs a similar hydraulic pilot method. 2. The maximum pressure in the main and auxiliary winch hydraulic circuits is regulated by the relief valve (main winch, auxiliary winch). 3. The overload relief valve (down) regulates the maximum pressure in the hoist-down circuit for the main winch.
This valve suppresses the surge
pressure that may occur in a sudden hoist-down operation so as to assure a smooth hoist-down movement.
In case of sudden stoppage of
hoist-down movement, the relief valve integrated in the counterbalance valve operates to protect the hydraulic motor for the main winch. The auxiliary winch employs a similar hoist-down circuit. 4. Circuit for remote control pressure vent In this hydraulic circuit, the hydraulic valve (pilot pressure) controls the pilot pressure to the remote control valve (main winch and aux. winch), the hydraulic valve (winch brake release).
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WF02-0340E
