Yanmar YM2000 - Lowering the Lift Arm

4. Lowering the lift arm
Condition: , the slow-return valve, and into the reservoir.
Lift
arm is at its highest position.
3. The lowering of the lift arm pushes the feed-back
Action:
rod.
Push the control lever forward.
4. The feed-back lever is pushed in the direction of
the arrow, and pushes the control valve.
Result:
5. The control valve is pushed into the neutral
Lift arm is lowered.
position, closing the circuit, and the fluid in the
Explanation: (Refer
to the diagram)
cylinder stops flowing.
I. Fluid supplied by the pump flows through the
control valve,
and return to the reservoir.
Note:
2. The weight of the implement pushes the piston, The speed of the implement's descent is controlled
and drives
away the fluid in the cylinder through by the opening of the slow-return valve.
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Hydraulic pressure outlet A
Section of drawing of
Hydraulic pressure pipe
slow return valve
Reservoir
-7-
.m.m**.*.m.m.m.'
Kd' LOW pressure flow