Kubota KX080-3 Workshop Manual page 387

WSM KX080-3 Mechanism
Pressure at port C in the above behavior
Let s suppose, however, that the piston h is already at its stroke end depending on how the machine
stopped immediately before. In such case, the valve e of relief valve B does not open. The pressure
at the port C is thus as shown in the chart below.
As discussed above, the startup pressure at the port C depends on the position of piston h .
When the pressure oil from the pump flows from the port B to D, the relief valves A and B
exchange their behaviors according to the above principle.
R/V B open
IV-M-103
IV Hydraulic System
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