Winget 200TM, Руководство по ремонту

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WORKSHOP MANUAL
Winget Mechanically Fed Mixers
Models: 200TM
From 1998
Hydraulic System Description Dragline
The dragline hydraulic system consists of a 12 volt solenoid controlled oil distribution
block (otherwise known as the Dragline Control Block) containing a relief valve set to
a maximum of 1500psi. A hydraulic motor is fitted operating the dragline winch.
The system is continuously supplied with oil whilst the engine or electric motor are
running via a High Pressure Carryover (H.P.C.O) contained within the main control
valve.
When the 12-volt solenoid is not energised oil flow is directed by the control block
back to the hydraulic tank through the return line which terminates at the tee piece on
the side of the tank.
The supply and return hoses supplying oil to the winch motor from the distribution
block are ported within the block to form a closed loop enabling the winch motor to
revolve freely within minimum resistance when the dragline shovel is manually pulled
backwards by the operator.
When the 12-volt solenoid is energised by operating the shovel button/switch, the
tank return is closed, the loop is opened and oil is directed to the winch motor, which
revolves reeling in the dragline shovel. Oil exiting the winch motor is directed by the
control block through the tank mounted tee piece and back into the tank.
Should the motor jam or seize in operation the relief valve in the control block will
“blow off” dumping the oil back to the tank through the tee piece.