Ls Control 2 - Kubota KX080-3 Workshop Manual

WSM KX080-3 Mechanism

2. LS control 2

P P + P + P
PS LS F P
Pps
Pmax
Pc
Ppa
Pp
Ppb
P
LS
LS-control valve
When an operator shifts the control lever to the inching movement of the front attachment, main spool notch
opening area of the control valve is regurated to limit the oil flow through.
Therefore, pressure value before the spool notch (P
ference between P (pressure before the spool notch) and P
PS
momentarily.
Thus, pressure balance changes to shift down the LS control spool, which leads the high pressure (P
push the control pin and decrease the swash plate angle.
P Pav
3
) becomes comparatively higher and the pressure dif-
PS
(pressure after the spool notch) increases
LS
IV-M-19
IV Hydraulic System
Pmax Pc
) to
max