2013 SSANGYONG NEW ACTYON SPORTS Service Manual

07-4
Side View Rear View
1. OVERVIEW
By using the planetary gear sets, two-gears shift type part time transfer case achieves direct connection
when selecting 4WD "HIGH" and 2.48 of reduction gear ratio when selecting 4WD "LOW". The silent
chain in transfer case transfers the output power to front wheels.
The simple operation of switches on instrument panel allows to shift between "2H" and "4H" easily while
driving (for 4L: stop vehicle first). The warning lamp warns the driver when the system is defective.
Front Rear

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Operation ▶
Description Mode Conditions
Driving
mode2H 2 Wheel drive
(rear wheel)Rear-wheel drive mode. This is used under
normal or high-speed driving conditions on
public roads or highways.
4H 4 Wheel drive
(high speed)This is used under sandy, muddy or snow-
covered road conditions
4L 4 Wheel drive
(low speed)This is used for maximum traction.
When cornering with low speed in 4WD
condition, there could be tire dragging, some
mechanical shocks and resistances in
vehicle’s drive train. These are normal
conditions due to internal resistance in the drive
train when the 4WD system is properly working
Mode change2H←4H2 Wheel drive
↔4 Wheel driveShifting is possible while driving at the speed of
70 km/h or less
2H,
4H↔4L2 Wheel drive,
4 Wheel drive (high
speed)
↔4 Wheel drive
(low speed)For Automatic Transmission:
For Manual Transmission:
Stop the vehicle on level ground and
move the gear selector lever into the
“N” position. Turn the switch to the
desired position. ·
Stop the vehicle on level ground and
move the gear selector lever into the
“N” position. Then turn the switch to
the desired position while depressing the
clutch pedal. ·
To make the mode change easily, stop the
vehicle on level ground and turn the mode
switch to the desired position and move the
shift lever to "N"-"R"-"N" while depressing
the brake pedal.

07-6
2. LAYOUT
Front axle
Front locking hub system (IWE)
Front propeller shaft
DSI 6-speed automatic
transmission
Part-time transfer case
Rear propeller shaft
Rear axle

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1) Components Location
Magnet clutch power supply connector (for 1 pin)
Transfer case main connector
Shift motor connector
Rear propeller shaft
Oil filler plug
(Tightening torque: 19 ~ 30 Nm)
Transfer case assembly
Front propeller shaft
T/C motor
Oil drain plug
(Tightening torque: 19 ~ 30 Nm)
Damper

07-8
3. SYSTEM LAYOUT
Indicators ▶
4H: 4WD HIGH indicator ON
4L: 4WD LOW indicator ON
2H: Indicator OFF
System failure: 4WD CHECK
warning lamp ON 4WD mode switch ▶
4H: 4 Wheel drive, high speed
4L: 4 Wheel drive, low speed
2H: 2 Wheel drive
TCCU
Solenoid valve

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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 actuatorVacuum
solenoid valve
for IWE
Vacuum
pumpBooster
Electric
signalTo atmosphereTCCU 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

07-10
2) Vacuum System Related to 4WD
During 2WD mode, the vacuum
pressure from vacuum pump is
continuously transmitted to the
locking hub system.
This vacuum pressure pulls in the
locking hub actuator so that it will
not be engaged with the front end
hub gear.
22WD (applying vacuum pressure to hub
actuator) The vacuum pressure pulls in the
locking hub actuator so that it will not be
engaged with the front end hub gear.The vacuum pressure is released from the
hub actuator. At this time, the front hub end
gear is engaged.
tmosphere
(in 4WD
mode) Hub actuator (LH)Hub actuator (RH)
In 4WD mode, the TCCU blocks the transferring of
vacuum pressure from vacuum pump to locking hub
by supplying the power to solenoid valve.

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5. POWER FLOW
Switching 2H, 4H → 4L
Vacuum solenoid
Locking hub operation
(Released internal vacuum)
Front propeller shaftTCCU
Front axle
Front wheelRear propeller shaft
Rear axle
Rear wheel
Transfer case