Kubota WSM L3560, Workshop Manual

Page: 290 / 801

TRANSMISSION
L3560, L4060, L4760, L5060, L5460, L6060, WSM
3-M14
[B] GST Valve
GST Valve Assembly
The GST valve assembly is installed at the left side
of the transmission mid case. In the GST valve
assembly, many parts comprising the system are
installed, including the solenoid valves, shift pistons,
shift check valves, low-pass valve, proportional reducing
valve, clutch valve, check valves, sensor and switches.
The GST valve assembly functions as the central unit of
the GST system.
9Y1210824TRM0018US0
Solenoid Valve
When the GST lever is operated, the solenoid valve
controls the flow of oil according to the gear shifting
operation.
When the solenoid is not excited, oil from regulating
valve flows to the shift piston through the surrounding of
the ball (10) in the valve. When the solenoid is excited,
plunger (9) presses the ball against the valve seat (11)
to open the unload passage (12), and drain the oil.
9Y1210824TRM0019US0
(1) GST Valve Assembly
(2) Clutch Valve
(3) Low-pass Valve
(4) Connector for Pressure
Switch
(5) Proportional Reducing Valve
(6) Connector for Oil
Temperature Sensor
(7) Connector for Solenoid Valve
(8) Solenoid Valves
a: Oil From Regulating Valve
(1) Solenoid Valve 4
(2) Solenoid Valve 3
(3) Solenoid Valve 6
(Main Range Shift)
(4) Solenoid Valve 5
(Sub-range Shift)
(5) Solenoid Valve 2
(6) Solenoid Valve 1
(7) Coil
(8) Solenoid Valve
(9) Plunger
(10) Ball
(11) Valve Seat
(12) Unload Passage
T: Drain Port
R: IN Port
P:
To Shift Piston
KiSC issued 03, 2016 A