Kubota M105S, Workshop Manual

Page: 370 / 561

8-M15
M105S, WSM HYDRAULIC SYSTEM
With the shuttle lever at R or F position, when the clutch pedal is depressed, the inching valve (6) is moved to the
left. And pressure difference between c part and d part is generated. As the proportionally reducing valve (2) is moved
to the left by pressure difference, R port (or F port) and T2 port are connected.
The oil in the shuttle clutch returns into the transmission case via R port (or F port), notched portion of proportionally
reducing valve (2) and T2 port. This cause the shuttle clutch to be set to off.
At the same time, as the hole e and passage f are connected, oil passage among the hole g, hole e and T2 port
are connected. As a result, even when the proportionally reducing valve (2) does not move, the oil passage from R
port (or F side) to T2 port is secured.
(1) Modulating Valve
(2) Proportionally Reducing Valve
(3) Shuttle Shift Spool (Forward,
Reverse)
(4) Accumulate Valve
(5) Shuttle Valve
(6) Inching Valve
(7) Shuttle Lever
(8) Clutch Pedal
A : Check Port
B : Check Port (Reverse)
C : Check Port
D : Check Port (Pump)
P : From Regulator Valve
C1, C2 : Connection Port
T1 to T5: To Transmission Case
N1 : Port N1
N2 : Port N2 a : Connect to Shuttle Lever
b : Connect to Clutch Pedal
c : Part c
d : Part d
e : Hole e
f : Passage f
g : Hole g
KiSC issued 03, 2007 A