2012 SSANGYONG RODIUS lock

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2. LAYOUT
Front axle
Front locking hub
Front propeller shaft
Part-time transfer case
Rear propeller shaft
Rear axle

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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
Booster
Operating Process
Vacuum pump
Vacuum generation process in front hub actuator ▶

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

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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

07-4
3. MAJOR CHANGES
Front Sub Frame
Old New
The engine mounting insulators (A) have been changed according to newly equipped engine
(D20DTR). It improves the durability and NVH.
Front Knuckle Assembly
Old New
The front knuckle assembly has been changed according to new 4WD system (Part-time T/C).
Hub bearingLocking hub
actuator

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Coil Spring ▶
Description 4WD 2WD
Spring rate (kg/mm)10.01 ± 5% 10.01 ± 5%
Coil diameter (mm)16.7 16.7
Inner diameter
(mm)D 158.3 58.3
D 288.3 88.3
Spring identificationNone + Red or Blue Yellow + Red or Blue
Number of windings8.49 8.49
Number of active windings6.99
CVW (Curved
Vehicle Weight)Height (mm)256.0 256.0
Weight (kg)976.9 ± 4% 834.9 ± 4%
Stress (kg/mm)69.53 59.42
Winding directionClockwise Clockwise

07-10
(2) Coil Spring
High tensile steel used.
Minimum length should be 20 mm longer than the fully compressed length.
Spring seat used. -
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Description 4WD 2WD
Part number45110-21000 45110-21000
Spring rate (kg/mm)12.0 ±5% 12.0 ±5%
Coil diameter (mm)15.9 15.9
Inner diameter (mm)69.1 69.1
Pitch (mm)85.0 85.0
Number of windings9.55 9.55
Number of active windings8.35 8.35
CVW (Curved Vehicl
e
Weight)Height (mm)250 250
Weight (kg)880 880
Stress (kg/mm)
62.1 62.1
Winding directionClockwise Clockwise
Spring length (mm)323.3 323.3
Dimension ▶

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2) Rear Brake
▶ Brake Disc
Brake disc
Lock nutCaliper
Brake hose
Backing plate
Adjusting bolt
Brake shoe Lock nut
Parking brake
operating lever