SSANGYONG KORANDO 2012 Service Manual

06-54110-01
2. TORQUE STEER
Torque steer is a condition in which a vehicle pulls to either side because of an inequality of traction
between the left and right driving wheels when a large torque is applied to the front wheel of a FWD or
4WD.
Especially for a FWD vehicle, this mechanical condition can cause the steering effect because of the
output torque (rotational force) produced by the gyroscope.
This rotational force is due to the difference in distance between the left/right front wheels and the
transaxle which leads to the change of the shaft bending angle.
To prevent this, the intermediate shaft, called Intermediate shaft, is employed on each side so that the
bending angle and the length are kept constant.
A gyroscope is a device for measuring or maintaining orientation, based on the principles of angular
momentum. In essence, a mechanical gyroscope is a spinning wheel or disk whose axle is free to
take any orientation. Although this orientation does not remain fixed, it changes in response to an
external torque much less and in a different direction than it would without the large angular
momentum associated with the disk's high rate of spin and moment of inertia. Since external torque
is minimized by mounting the device in gimbals, its orientation remains nearly fixed, regardless of
any motion of the platform on which it is mounted.

06-6
3. REAR AXLE
The rear axle installed in this car is a removable axle, called IRDA (Independent Rear Differential Axle).
The rear differential carrier is installed directly on the sub frame,
and there is an independent suspension that allows each wheel on the same axle to move vertically and
independently of each other with the universal joint and the slip joint.

07-30000-00
1. SPECIFICATION
Unit Description Specification
PTU
(Power Transfer Unit)Gear ratio 2.929
Numbers of helical gear 22/39
Numbers of hypoid gear 23/38
Oil IDEMITSU LW 80W/90
Oil capacity≒ 0.58 L
Operating temperature-40 to 150°C
E-coupling Maximum torque 1,000 Nm
Operating temperature-40 to 120°C
Numbers of main clutch Outer: 11, Inner: 11
Numbers of pilot clutch Outer: 4, Inner: 3
Coil windings 240 turns
Weight 8 kg
Oil ECF107 (ATF based EMCD special oil)
Oil capacity 0.145 L (145 ml)

07-4
1. OVERVIEW
The AWD system in this vehicle is the electronic 4WD system and controls the traction to rear wheels
according to the driving conditions.
1) Driving Mode
(1) AUTO mode (Normal driving mode)
Normally the vehicle is in 2WD mode.
Automatically change to this mode when the vehicle needs higher traction.
(2) LOCK mode (when pressing 4WD LOCK switch)
This mode provides the highest traction. Use
this mode when driving on unpaved, rugged,
steep, sandy, wet or slippery roads.
In 4WD LOCK mode, if the rear wheel speed
exceeds 40 km/h, 4WD LOCK mode is
canceled and 4WD AUTO mode is activated
(Indicator OFF). If the speed is decreased
below 35 km/h, 4WD LOCK mode is resumed
(Indicator ON again). -
-
Mode table ▶
4WD LOCK switch Vehicle speed Driving mode
Not pressed (4WD AUTO) No conditions 4WD AUTO
Pressed (4WD LOCK) over 40 km/h 4WD AUTO
Pressed (4WD LOCK) below 35 km/h 4WD LOCK

07-50000-00
2. SYSTEM LAYOUT
1) Components
(1) PTU (Power Transfer Unit)
<007b008f008c004700970096009e008c00990047009b009900880095009a008d008c00990047009c00950090009b0047009000950047009b008f008c0047008d009900960095009b0047009e008f008c008c00930047008b00990090009d008c0047009400
96008b008c00930047008a008f00880095008e008c009a0047>the angle of engine torque to 90°
and transfer it to E-coupling to distribute the torque to rear wheels.
(2) E-Coupling (Electronic Coupling)
E-Coupling transfer the engine torque from PTU to rear axle and controls to distribute it between front
wheels and rear wheels.
(3) E-Coupling Control Unit (ECU)
E-Coupling controls the current (clutch engagement force) of EMCD in E-Coupling according to CAN
signals (wheel speed, engine torque, pedal position, ABS/ESP signals).
* EMCD: Electro-Magnetic Control Device PTU assemblyE-coupling control unit
(located on the floor under driver seat)E-coupling

08-30000-00
System Description Specification
Front
suspensionSuspension type Macperson strut type
Spring type Coil spring
Stabilizer type Torsion bar type
Shock absorber Type Cylindrical reciprocation type
Max. length (extended)
554 mm
Min. length
(compressed)372 mm
Min. length
(compressed)Inner diameter (A) Upper: 84.0 mm
Lower: 100.0 mm
Outer diameter (B) 163.1 mm
Free length (C) 356.1 mm
Installed length (D) 276.0 mm
Coil windings 5.32 turns
Winding direction Right direction
Rear
suspensionDriving type AWD 2WD
Suspension type (trailing, upper, lower & track
rod)Multi-link type←
Spring type Coil spring←
Stabilizer type Torsion bar type←
Shock absorber Type Cylindrical
reciprocation type←
Max. length (extended) 551 mm←
Min. length
(compressed)361 mm←
Coil spring Diameter (A) 12.8 mm 12.6 mm
Free length (B) 287.1 mm 291.7 mm
Coil windings 6.64 turns 6.32
Winding direction Right direction←
1. SPECIFICATION

08-4
1) Wheel Alignment
System Description Specification
Front Ground clearance (A)76.8 ± 5 mm
Trim height : wheel
center ↔ Wheel
house433 mm
Camber (maintenance
free)-0.15 ± 0.5˚
Caster (maintenance
free)4.8 ± 0.5˚
Total toe-in0.0 ± 0.1˚
(adjust by tie rod)
King pin angle12.85˚
Rear Ground clearance (A)63.3 ± 5 mm
Trim height : wheel
center ↔ Wheel
house437 mm
Camber (maintenance
free)-0.5 ± 0.5˚
[ adjust by cam bolt on
upper arm ]
Total toe-in0.0 ± 0.1˚
[ adjust by cam bolt on
track rod ]

08-50000-00
2. TIGHTENING TORQUE
Front suspension assembly ▶

08-6
Rear suspension assembly ▶

08-70000-00
1. OVERVIEW
The suspension is the device to connect the axle and vehicle. It absorbs the vibrations and impacts from
road surface, which enhances the comforts, driving force, braking force and drivability.
Underview of vehicle with 2WD, 6M/T Underview of vehicle with 4WD, 6A/T
Front suspension
Rear suspensionFront suspension
Rear suspension