Page 609 of 796
05-10
(2) Vacuum System Related to 4WD
In 4WD mode, the TCCU blocks the
transferring of vacuum pressure from
vacuum pump to locking hub by supplying
the power to solenoid valve.Check valve
This valve allows the vacuum pressure to
flow through it in only one direction. This
prevent the vacuum from abruptly
releasing due to faulty vacuum pump.
4WD:
The vacuum pressure is released from the hub
actuator. At this time, the front hub end gear is
engaged.2WD:
The vacuum pressure pulls in the locking hub
actuator so that it will not be engaged with the
front end hub gear.
Vacuum solenoid valve
To atmosphere Block the vacuum
pressure
Hub actuator (RH)
Gear disengagedGear engaged
Page 610 of 796
05-113240-01
5. POWER FLOW
Switching 2H, 4H → 4L
TCCU
Vacuum solenoid
Locking hub operation
(Released internal vacuum)
Front propeller shaft
Front axle
Front wheelRear propeller shaft
Rear axle
Rear wheel
Transfer case
Page 611 of 796
05-12
1) 2H Mode (2 Wheel Drive)
Power Flow ▶
Output shaft of
transmission
Rear propeller shaftRear wheel
Rear axle
Rear wheel
The driving force is directly engaged (1:1) to rear axle and is transferred only to the rear wheels.
Input shaft of transfer
case
↓
Output shaft of transfer
case
Page 612 of 796
05-133240-01
2) 4H Mode (4 Wheel Drive - High Speed)
Power Flow ▶
The driving force is pass through 4WD High magnetic clutch in transfer case and is distributed
on front wheels and rear wheels (50;50).
Page 613 of 796
05-14
3) 4L Mode (4 Wheel Drive - Low Speed)
Power Flow ▶
The gear ratio is reduced to 2.48;1 while passing through 4WD Low range and planetary gear set
in transfer case and the driving force is distributed on front wheels and rear wheels (50;50).
Page 614 of 796
06-33310-01
1. SPECIFICATIONS
Description Specification
StructureUniversal joint with yoke arm and spider and CV joint
Front propeller shaft (4WD) One universal joint and one CV joint
Rear propeller shaft Two universal joint and one CV joint
Run-out below 0.4 mm
UnbalanceMax. 18g·cm / 4,500rpm
Length of front propeller
shaft4WD A/T 531.2 ± 1.0 mm
Length of rear propeller
shaft2WD M/T 1892.1 ± 2.0 mm
A/T 1975.1 ± 2.0 mm
4WD A/T 1593.1 ± 2.0 mm
Page 615 of 796
06-4
2. MAJOR CHANGES
Rear propeller shaft assembly
- Increased part B of rear propeller shaft assembly due to change of rear sub frame (6.0 mm)
Specifications
ItemM/T 2WD A/T 2WD A/T 4WD
Old New Old New Old New
A (mm) 1886.1 1892.1 1969.1 1975.1 1587.1 1593.1
B (mm) 769.5 775.5 769.5 775.5 769.5 775.5
Page 616 of 796
06-53310-01
1. OVERVIEW
The propeller shaft transfers the power through the transmission and transfer case to the front/rear
axle differential carrier (final reduction gear). It is manufactured by a thin rounded steel pipe to have
the strong resisting force against the torsion and bending. Both ends of propeller shaft are connected
to the spider and the center of propeller shaft is connected to the spline to accommodate the changes
of the height and length. The rubber bushing that covers the intermediate bearing keeps the balance o
f
rear propeller shaft and absorbs its vibration.
Function of propeller shaft ▶
Transmits driving torque.
Compensates the angle change (universal joint / CV joint).
Compensates the axial length change (splines for the slip joint). -
-
-
4WD AT 2WD MT