2013 SSANGYONG TURISMO brake

10-8
4. HYDRAULIC CIRCUIT DIAGRAM
1) Hydraulic Circuit of ABS
The vehicle equipped only with the ABS controls the wheel’s braking force using three 3-
channel 4-sensor method. The front wheels that are the primary circuit of the brake system is
composed of two wheel speed sensors and two channel valves system with two inlet valves and two
outlet valves. The rear wheels that are the secondary circuit of the brake system is composed of two
wheel speed sensors, one inlet valve and one outlet valve. This system is similar to the one from the
previous model.

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▶Pressure Decreases in the Circuit when ABS is Operating
Even when the hydraulic pressure on each circuit is stable, the wheel can be locked as the wheel
speed decreases. This is when the ABS ECU detects the wheel speed and the vehicle speed and
gives the optimized braking without locking the wheels. In order to prevent from hydraulic pressure
increases, the inlet valve is closed and the outlet valve is opened. Also, the oil is sent to the low
pressure changer and the wheel speed increases again. The ABS ECU operates the pump to circulate
the oil in the low pressure chamber to the master cylinder. This may make the driver to feel the brake
pedal vibration and some noises.
▶Pressure Increases in the Circuit when ABS is Operating
As the wheel speed increases, the inlet valve opens and the wheel’s pressure increases due to
the master cylinder pressure. The oil in the low pressure chamber circulates to the wheel by the pump
and the wheel speed decreases as the hydraulic pressure at wheel increases. This operation
continues repetitively until there are no signs that the ECU is locking the wheels. When the ABS
hydraulic pressure control takes place, there may be some vibration and noises at the brake pedal.

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4. TROUBLESHOOTING
Problem Possible Cause Action
Movements of steering
feels heavyIrregular wear or binding of steering ball joint
due to lack of lubrication or foreign material
insertionLubricate or replace
Damaged or defective steering gear Replace the steering gear
assembly
Incorrect steering pinion preload Adjust
Defective steering shaft join Replace
leakage of steering fluid Repair or replace
Insufficient steering fluid or air insertionFill up fluid or bleed air
Defective steering oil pump Replace
Damaged or loosened pump drive belt
Adjust or replace
Clogging of fluid line Repair or replace
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace
Steering wheel pulls to
one sideDamaged steering linkage Replace
Damaged wheel or tire Repair or replace
Defective brake system Repair or replace
Defective suspension Repair or replace
Excessive free play of
steering wheelWorn steering gear Replace the steering gear
assembly
Worn or damaged steering ball joint Replace
Looseness of steering gear box Retighten
Poor returning of steering
wheelBroken or binding of steering ball joint Replace
Improper correct steering pinion preload Replace the steering gear
assembly
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace

11-114610-00
Oil Pump Pressure Check ▶
Check the oil pump pressure to locate any
defect in oil pump.
Before checking the pressure, check the oil
level and belt tension. Prepare the empty
container to collect the spilled oil during the
service.
Unscrew the pressure line fitting in power
steering pump.
Install the pressure gauge between the
power steering pump and the power steering
oil pressure line.
Place the shift lever to neutral position. Apply
the parking brake.
Open the valve in pressure gauge. Start the
engine and let it run at idle speed.
Turn the steering wheel several times so that
the oil temperature reaches to normal
operating level. A.
B.
C.
D.
E.
Fully close the valve in pressure gauge and
measure the oil pressure. F.
To prevent internal damage, do not close the
gauge valve over 10 seconds.
Keep the oil temperature at proper range. -
-
Relief pressure93.3 ~ 100.4 kgf/cm²

12-54170-01
1. OVERVIEW
A radial tire uses a cord angle of 90 degrees. That is, the cord material runs in a radial or direct line
from one bead to the other across the tread. In addition, a radial tire has a belt overwrap under the
tread surface to provide greater structural stability. The belt overwrap of a radial tire distortion while the
radial structure enables high speed driving.
Tire supports the weight of the vehicle, reduces the impact from the road and at the same time,
transmits the power to propel, brake and steer on the road. It also functions to maintain a
vehicle’s movement. In order to complete such tasks, a tire must be structured to be a resilient
vessel of air.
There is wear limit mark on the tire, which protrudes as a strip shape located approximately 1.6 mm
from the groove bottom. This wear limit mark is not seen from the outside so there is additional
"▲" mark on the shoulder to let the driver find the wear mark easily. To measure the tire groove
depth, measure at any point other than the point which has a wear limit mark.
The tire is worn unevenly according to the driver's driving habit, improper servicing, low tire inflation
pressure, changed tire location, etc.
1) Structure of Tire
Tread
This thick layer of rubber provides the interface
between the tire and the road. Wear-resistant
rubber is used to protect the carcass and belt
against fractures and impacts and to deliver a
long driving life.
Shoulder
Located between the tread and sidewall, the
shoulder rubber is the thickest so that the
design must allow for the easy diffusion of heat
generated within the tire while driving.
Sidewall
The part between the shoulder and bead, the
flexible sidewall protects the carcass and
enhances the ride. A tire’s type, size,
structure, pattern, manufacturing company,
product name and various characters are
indicated here. Bead
The bead attaches the tire to the rim and wraps
the end of the cord fabric. Comprised of the bead
wire, core, flipper and other parts, the bead is
generally designed to be slightly tight around the
rim so that in the case of a sudden drop in
inflation pressure, the tire will not fall off the rim.
Carcass
As the most important framework of a tire, the
entire inner layer of cord fabric is called the
carcass. The carcass acts to support air
pressure, vertical load and absorb shocks.
Valve
Belt
Bead core

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When the vehicle is driven on a road surface covered with water at high speed, tires do not contact
with the road surface but rotate floating on a thin film of water.
It causes brake failure, lower traction force and losing the steering performance.
To prevent this, increase the tire inflation pressure, use tires with leaf shape tread which is not worn.
However, it is a best measure to drive slowly.
2) Hydroplaning