4Wd Oil Flow - wsm M6040 Workshop Manual

M6040, M7040, WSM

[2] 4WD OIL FLOW

Oil pressure-fed from the power steering hydraulic
pump is flowed to the 4WD solenoid valve (1) through
the steering controller and oil cooler. The system
hydraulic pressure-fed to disengaged position for 4WD
clutch (4) when 4WD switch at 2WD position. As the
4WD solenoid valve does not electrified, the oil flows to
2WD mode. When the 4WD switch turned on, the 4WD
solenoid valve is electrified, the oil flow is switched and
engage the 4WD clutch (4).
The maximum pressure against the clutch piston is
regulated under approx. 2.16 MPa (22.0 kgf/cm
313 psi) by the relief valve (5) of system pressure.
On the other hand, the return oil is flowed to the
transmission case through the 4WD valve case (1).
(1) 4WD Solenoid Valve
(2) PTO Solenoid Valve
(3) PTO Clutch Pack
(4) 4WD Clutch Pack
(5) Relief Valve
3-M19
TRANSMISSION
A: 2WD Port
B: 4WD Port
P: From Power Steering
Pump
9Y1210143TRM0018US0
KiSC issued 07, 2012 A
2
,