2012 SSANGYONG RODIUS Service Manual

11-114610-00
Measure the oil pressure with the gauge valve
fully open. G.
Pressure at no load3 ~ 5bar
If the pump pressure is in specified range, the
pump is normal. If not, replace the power
steering pump H.
Turn the steering wheel righ or left until it
stops with the engine idling ans valve fully
open. I.
Oil pressure78 ~ 83bar

11-12
1. SYSTEM LAYOUT

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1. SPECIFICATION
Description Specification
Tire 16 inch 225/65R16
Tire inflation pressure 35psi
Wheel 16 inch 6.5J * 16
Balance weightInner: Clip-on type
Outer: Clip-on type
Tightening torquse of wheel bolt 127.4~156.8 Nm
2. WHEEL DESIGNS
16 inch: 225/65R/16 16 inch: 225/65R/16
2WD (6.5J * 16) P/TIME (6.5J * 16)

12-4
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
<009d008c008f0090008a0093008c02c5009a004700940096009d008c0094008c0095009b0055004700700095004700960099008b008c00990047009b00960047008a0096009400970093008c009b008c0047009a009c008a008f0047009b0088009a009200
9a0053004700880047009b00900099008c00470094009c009a>t 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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2) Tire Unit Indication
Aspect ratio (%)
= Nominal section height (H) / Nominal section
width (W)
X 100
3) Tire Inflation Pressure (35 psi)
Proper inflation pressure Excessive inflation pressure Low inflation pressure
The contact area between the
ground and tire faces the tread
layer completely. Thus the
driving force and the braking
force are optimized, and the tire
is worn out evenly resulting in
increased life.The contact area between the
ground and tire is not
enough, so the tire is worn
out unevenly and the tire is
vulnerability to outside
influence.The contact area between the
ground and tire is excessive,
so a lot of heat is generated
and the tire is worn out
unevenly and abnormally.
Tread widthTread widthTread width

12-6
During driving, the rotating tire repeats deformation and restoring movement in is tread. This
happens when the tire pressure is low in high speed driving.
However, when the wheel rotating speed is fast, the tire is deformed even before it is restored to
its original shape and the trembling wave appears on the tread portion. If this symptom lasts for
an extended period of time, the tire can be blown out in a short period of time.
If the standing wave symptom occurs on the tire, rubber on the tread comes off and eventually
the tire can be blown out which is very dangerous. When driving at high speed, the inflation
pressure should be increased to decrease heat generation due to extension and contraction
motion, to decrease hydroplaning and to prevent standing wave.
To prevent this symptom, it is recommended to increase the tire pressure 10 ~ 30 % higher than
the specified pressure value in high speed driving.
Specified tire inflation pressure35psi
2. ABNORMAL TIRE SYMPTOM
1) Standing Wave

12-74170-01
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) Hydro Planing

12-8
If weight is not equally distributed around the wheel, unbalance centrifugal force by the wheel
rotation produces vibration. As the centrifugal force is produced proportional to the square of the
rotating speed, the wheel weight should be balanced even at high speed. There are two types of
the tire and wheel balancing: static and dynamic. Abnormal vibration may also occur due to
unbalanced rigidity or size of tires.
1) Static Balance
When the free rotation of the wheel is
allowed, the heavier part is stopped on the
bottom if the wheel weight is unbalanced
and this is called "Static Unbalance". Also,
the state at which tire's stop position is not
same is called "Static Balance" when the
wheel is rotated again. If the part A is
heavier as shown in the figure 1, add the
balance weight of a weight corresponding
to unbalanced weight from B to A to
maintain the static balance. If the static
balance is not maintained, tramping, up
and down vibration of the wheels, occurs.
2) Dynamic Balance
The static unbalance of the wheel
creates the vibration in the vertical
direction, but the dynamic unbalance
creates the vibration in the lateral
direction. As shown in the figure 2 (a), if
two parts, (2) and (3), are heavier when
the wheels are under the static balance
condition, dynamic unbalance is
created, resulting in shimmy, left and
right vibration of the wheels, and the
torque Fxa is applied in the axial
direction. To correct the dynamic
unbalance, add the balance weight of a
same weight for two points of the
circumference of the rim, A and B, as
shown in the figure 2 (b), and apply the
torque in the opposite direction to the
torque Fxa to offset in order to ensure
smooth rotation of the wheel.
Center
A
B
a
a
Fxa
Fxa F
F
A
B
(a)(b)
[Figure 1]
[Figure 2]
3. WHEEL BALANCE