wheel SSANGYONG KORANDO 2013 Workshop Manual

HECU (Hydraulic & Electronic Control Unit)
HECU for ABS HECU for EPS
The HECU (Hydraulic & Electronic Control Unit) determines the slip conditions of vehicle wheels by
calculating each wheel's speed and the increment/decrement of speed based on the information
detected by the sensors, and controls the pumping and boosting/reducing/keeping pressure by
operating the valve and motor of HECU.
2. MOUNTING LOCATIONS (CHASSIS)
Moto
HU (Hydraulic Unit) ECU (Electronic
Control Unit) Moto
HU
(Hydraulic Unit) ECU (Electronic
Control Unit)
Motor
angle (8P)
Motor power (3P)Torque angle
sensor (8P) Battery (2P) Connector to
vehicle (8P)
Fuse for EPS
Steering wheel angle sensor (SWAS)
The steering wheel angle sensor is mounted between the
steering column and the steering column shaft. It is
commonly used by the ESP (Electronic Stability Program)
system. And it receives signals of the steering wheel angle
sensor from the ESP HECU (Hydraulic & Electronic
Control Unit).
EPS unit
The ECU controls the electric power steering
system depending on the driving conditions,
based on the signals from the torque and
angle sensor.
E-coupling unit
The E-coupling unit is a control unit
which determines the magnetic force by
considering CAN signals (wheel speed,
engine torque, pedal opening, ABS/ESP
CAN signals, etc.) from other ECUs.

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TPMS ECU
The TPMS ECU is located to the rear bumper rail
under the vehicle. It outputs the tire pressure and
cluster, based on the wheel module information
and CAN data.
G-sensor(4WD, ABS)
For the vehicle with the ABS, a speed difference
between the wheels is not noticeable as all the wheels
are slipping during abrupt braking. Therefore, the
vehicle needs the speed information from other sensors
other than the wheel speed sensor. The longitudinal
acceleration sensor (G-sensor) is used for this case. It
controls the ABS by using the signals from the sensor
during abrupt braking and acceleration.
TCU unit
The transmission control unit (TCU) is installed
under the driver seat, and controls the
transmission. The TCU is operated by the ignition
power supply and receives and processes the
following information from the inner sensors
through CAN buses.
TGS Lever assembly
The TGS communicates with TCU
(Transmission Control Unit), ECU,
ESP HECU and instrument cluster
to let the driver select the desired
transmission gear and to maintain
the desired driving condition. Also,
the tip switch is installed on the
lever knob and the steering wheel
so that the driver select the gear
manually when the shift lever is in
"M".Sensor cluster
The sensor cluster is linked to
the sensors on the unit board
and CAN interface. And they
are housed in one case and
mounted to the body.

A/T assembly
Automatic transmission is available as 4WD- and 2WD-type,
and provides 6 speeds for forward travel and 1 reverse
travel. It is also equipped with the torque converter with inner
lock-up clutch and electronically controlled solenoid which
controls all hydraulic functions.
3. CHASSIS COMPONENT LAYOUT
PTU (Power Transfer Unit)
The PTU is a device that transfers the power
generated from the engine to the rear axle through
propeller shaft and E-coupling by changing the power
4WD vehicle.Rear axle assembly
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 independentl
y
of each other with the universal joint and the slip
joint.
E-coupling control unit (E-Coupling ECU)
The E-coupling unit is a control unit which determines
the magnetic force by considering CAN signals (wheel
speed, engine torque, pedal opening, ABS/ESP CAN
signals, etc.) from other ECUs.
Inhibitor switch
Torque converter Oil pan
E-coupling sideRear axle side
Propeller shaft
1) 4WD Vehicle With Automatic Transmission
GSLDSLInhibitor switch
Torque converter Oil pan

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M6LF1 manual transmission
M6LF1 manual transmission is a model modified from the
one that used in other vehicle so that it can be applied to FF
(Front engine-Front wheel driving) type vehicle, and has an
axle in one piece. The engine torque and gear ratio of this
transmission have been optimized to maximize driving
performance. It provides 6 speeds for forward travel and 1
reverse travel.
Clutch assembly
M6LF1 manual transmission is a model modified from the
one that used in other vehicle so that it can be applied to FF
(Front engine-Front wheel driving) type vehicle, and has an
axle in one piece. The engine torque and gear ratio of this
transmission have been optimized to maximize driving
performance. It provides 6 speeds for forward travel and 1
reverse travel.
The 2WD vehicle with manual transmission is a front wheel drive type vehicle that doesn't have PTU,
propeller shaft, E-coupling and rear axle which are applied to 4WD vehicle. Its under structure is very
simple.
Manual gear selector lever
Transmission sideControl shaft assembly
Transaxle side
Concentric slave assembly
Pressure plate
2) 2WD Vehicle With Manual Transmission
Clutch disc

Stabilizer bar assembly
The stabilizer bar assembly is not activated if the left/right
wheels move up/down simultaneously, but if both wheels
move up/down differently it is activated with frame to
minimize the tilting of the body.
5. FRONT SUSPENSION COMPONENT LAYOUT
Front suspension supports the vehicle weight and absorber the vibration from tires. And, in this type of
suspension, the steering linkage tie rod is mounted on the knuckle. The Macpherson Strut suspension
is an independent suspension which has a spring on the strut with a built-in shock absorber. The lower
arm is installed on sub frame and large strut damper is installed on the knuckle to support the tire.
Lower arm assembly
The lower arm assembly connects the frame and
knuckle. It supports the load transferred to the tire
knuckle, relieves the impact from the vehicle and ground
conditions, and ensures driving stability.
Stabilizer bar
Bushing
Clamp
Link

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Stabilizer bar assembly
The stabilizer bar assembly is not activated if the
left/right wheels move up/down simultaneously, but if
both wheels move up/down differently it is activated
with frame to minimize the tilting of the body.
Coil spring
Coil spring is installed between
the coil spring link and body
frame. It relieves the vibrations
and impacts from wheels to
vehicle body.
Lower arm assembly
The lower arm is installed between knuckle and rear
sub frame and relieves the load to coil spring from
wheel. In other word, it controls the longitudinal load.
Stabilizer bar
Bushing
Clamp
Link

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H. Parking brake
M/T A/T
The parking brake is the mechanical device to
hold the vehicle. When pulling up the lever, the
parking brake cable between the lever and the
rear drum brake trailing shoe pulls the parking
brake lining to contact to drum.
E. Rear brake assembly
The disc brake for 4WD vehicle has the same
structure with the one for 2WD vehicle, but the
appearance and knuckle shape is different from
each other.
Caliper
G. Brake pedal
Disc
F. Parking brake
4WD and 2WD
Front side2WD Rear side
The wheel speed sensor for 4WD has the same
structure and mounting location with the one for
2WD vehicle. But the rear side wheel speed
sensor for 2WD vehicle has different sensor
appearance and mounting status because the
knuckle shape is different from the 4WD vehicle.

Steering gear box assembly
The steering gear box assembly consists of power cylinder and control valve. The power cylinder has a
cylinder, piston and piston rod. The control valve directs the oil to one end face of the piston to enhance
the steering force. There is a safety check valve which lets the driver steer manually when there is a
malfunction in the hydraulic circuit.
8. STEERING SYSTEM LAYOUT
1) HPS (Hydraulic Power Steering)
The hydraulic pump is a vane
type pump and consists of the
flow control valve and pressure
relief valve.The oil reservoir sends the oil to
the power steering pump and
receives the oil from the power
steering gear.There is a shock absorber which
is folded in the axial direction
when the vehicle is crashed and
a ignition switch assembly on
the column shaft.
The lower shaft minimizes the
torque change using a CV joint
which has constant angular
speed.
Tie rod endSteering cylinderGear box
Tie rod end
Hydraulic pipeColumn shaft
Lower shaft
Steering wheel
assembly
Hydraulic pipe & hose

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ECU
The ECU controls the electric
power steering system
depending on the driving
conditions, based on the
signals from the torque and
angle sensor.
2) EPS (Electric Power Steering)
Fuse
The vehicle with EPS has
EPS fuse (80A) mounted to
the positive (+) terminal of the
battery, and this fuse supplies
power to the EPS unit
directly..
Steering gear box assembly
When the driver turns the steering wheel, a torque is generated and the torque sensor and the steering
angle sensor in the EPS system detect the rotation of the steering column to run the electric motor. At
this time, the worm gear connected to the motor drives the helical gear mounted to the steering column
to generate the assist torque for the steering column. This allows the driver to operate the steering
wheel easier.
ECU
Tie rod end
Tie rod end Gear boxSteering cylinder
Steering wheel assembly
BLAC motor
Lower
shaft Column
shaft
Colum shaft assembly
The column shaft assembly consists
of BLAC motor, ECU, torque and
angle sensors. The electric power
steering (EPS) system uses the
electric motor to assist the steering
force. It functions independently
regardless of whether the engine is
running or not, unlike the existing
hydraulic power steering.
The lower shafts functions in the
same way as the hydraulic type.

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3) General Instructions
Before lifting up the vehicle with a lift, correctly support the lifting points.
When using a jack, park the vehicle on a level ground and place the wheel chocks under the tires.
Position the jack under the frame and lift up the vehicle and then support with chassis stand before
service work.
Make sure to disconnect the negative (-) cable from the battery to prevent any damage to electric
systems.
If you have to work on vehicle, cover the seats and floor with protection covers to avoid any
damage and contamination.
Brake fluid and anti-freeze can damage the painted surface of body. So carefully handle them
during service work.
To improve the efficiency of service work, use only recommended and specified tools.
Use only Ssangyong genuine spare parts.
Never reuse the cotter pin, gasket, O-ring, oil seal, lock washer and self-locking nut. Replace them
with new ones. If reused, normal functions cannot be maintained.
Store the disassembled parts as a set based on disassembly order and unit.
Pay particular attention not to miss or mix the fasteners.
If necessary, especially for inspection, clean the removed parts completely.
Apply the oil or grease on the running and sliding surfeces before installation. Use the specified
sealant and gasket to prevent leakage if necessary.
Tighten the fasteners to the specified tightening torque.
As a final stage of service work, check if the serviced system is working properly and the problem
has been eliminated clearly. (1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14) Remove the engine and transaxle as a set.
Manual transaxle: Transaxle can be separated after removing the front module (sub frame, engine
and transaxle).
Automatic transaxle: Transaxle can be separated after removing the sub frame. -
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2) Equipment
Korando is FF (Front Engine Front Drive) type vehicle, and engine and powertrain system are
integrated into a module. Therefore, 2-post lift and general equipment are necessary when working
on the engine and transmission.
Major equipment: Engine and transmission jack, Engine stand, Engine crane, Transmission jack,
Engine hanger -
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Engine stand
Engine crane