07-9
3240-01
4. IWE LOCKING HUB SYSTEM
1) Overview
The vacuum locking hub uses the IWE (Integrated Wheel End) system, and in this system, the
vacuum is generated only within the hub actuator.
It is structured to transmit power to the front section after the actuator hub is engaged following
the release of vacuum from the drive shaft end gear and the hub end gear
Locking hub actuator
Locking hub actuator
Vacuum
solenoid valve
for IWE
Vacuum
pump
Booster
Electric
signal
To atmosphere
TCCU
Operating Process
Vacuum generation process in front hub actuator
Hub actuator (FR)
Hub actuator (FL)
Vacuum pump
TCCU
to atmosphere to atmosphere
Vacuum solenoid valve
4WD mode
switch
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