2013 SSANGYONG NEW ACTYON SPORTS Service Manual

08-8
5. TROUBLESHOOTING
Problem Cause Action
Vehicle rollingBroken stabilizer bar Replace
Faulty shock absorber Replace
Abnormal noise.Loosening mounting Retighten
Damaged or worn wheel bearing Replace
Damaged shock absorber Replace
Damaged tire Replace
Poor ridingOver inflated tire Adjust pressure
Faulty shock absorber Replace
Loosened wheel nut Tighten as specified torque
Bent or broken coil spring Replace
Damaged tire Replace
Worn bushing Replace
Vehicle pulls to one sideDeformed arm assembly Replace
Worn bushing Replace
Bent or broken coil spring Replace
Hard steeringExcessive resistance of lower arm ball
jointReplace
Insufficient tire pressure Replace
Faulty power steering Replace
Unstable steering
Worn or loosened lower arm bushing Retighten or replace
Vehicle bottoming
Worn or broken coil spring Replace
Vehicle height loweredOver loaded on the vehicle -
Defective shock absorber Replace
Defective coil spring Replace

08-94411-01
Under View (4WD, Automatic Transmission)
Rear suspension
1. SUSPENSION
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.
Front suspension

08-10
2. FRONT SUSPENSION (DOUBLE WISHBONE)
Advantage ▶
The advantage of a double wishbone suspension is that it is fairly easy to work out the effect of
moving each joint, so the kinematics of the suspension can be tuned easily and wheel motion can
be optimized.
It is also easy to work out the loads that different parts will be subjected to which allows more
optimized lightweight parts to be designed.
They also provide increasing negative camber gain all the way to full jounce travel unlike the
MacPherson strut which provides negative camber gain only at the beginning of jounce travel and
then reverses into positive camber gain at high jounce amounts. 1.
2.
3.
Disadvantage ▶
The disadvantage is that it is slightly more complex than other systems like a MacPherson strut. Due to
the increased number of components within the suspension setup it takes much longer to service and is
heavier than an equivalent MacPherson design. 1.
2. Double wishbone suspension is an independent suspension design using two (occasionally parallel)
wishbone-shaped arms to locate the wheel. Each wishbone or arm has two mounting points to the chassis
and one joint at the knuckle. The shock absorber and coil spring mount to the wishbones to control vertical
movement. Double wishbone designs allow the engineer to carefully control the motion of the wheel
throughout suspension travel, controlling such parameters as camber angle, caster angle, toe pattern, roll
center height, scrub radius, scuff and more.
Lower arm Upper arm Shock absorber Stabilizer

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3. REAR SUSPENSION (MULTI LINK TYPE)
Multi-link (5-Link) type suspension is the independent suspension. It provides good ride comfort and
drivability by reducing the coil spring weight. Also, it increases the space for passenger compartment by
lowering the floor. This type of suspension consists of multiple links such as coil spring, shock absorber,
upper and lower arms, lateral rod and stabilizer bar.
Shock absorber Stabilizer bar Rear coil spring
Lower arm Upper arm Lateral rod

08-12
4. WHEEL ALIGNMENT
The front wheels have specific angle to allow control of the steering wheel with less effort, ensure driving
stability, improve steering wheel restoration and steering performance, and minimize the tires wear.
1) Toe-in
The difference of measured distances between the front ends of the tires (A) and the rear ends of the
tires (B) along the same axle when viewed the wheels from the top
TOEUnilateral : 0.10 ± 0.16°
Total : 0.20 ± 0.13°
When viewed from the top, the distance between the tire centers is smaller in the front than in
the rear. ▶
Side slip protection
Parallel front wheels rotation (straight ahead driving is ensured by toe-in to prevent the wheels from
tilting outwards by the camber while driving)
Prevention of uneven (outward) tire wear
Prevention of toe-out from wearing of steering linkage -
-
-
-
Front

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2) Camber
The angle between the center line of the tire and the vertical line when viewed from the front of the
vehicle
Positive camber: Top of the tire is tilted outward ▶
Advantages: The axle is not bent when it is loaded.
The force required to operate the steering wheel is reduced due to smaller
contact area (or load area) of the tire.
Restoring force of the steering wheel is gained (when turning the steering
wheel, the tire circles and the force to lift the frame is applied. In this case,
the shock absorber contracts and the restoration force is applied to the
steering wheel.) -
-
-
Disadvantages:Cornering force decreases as the positive camber increases when the
vehicle makes turn.
The hub bearing is worn unevenly if camber is excessive. -
-
Zero camber: When the tire center line is perpendicular to the ground level ▶
Negative camber ▶
Advantages:
Better traction force due to wide load area (applicable for off-road vehicle)
Better corner driving when the vehicle makes turn as the cornering force
increases (applicable for high-speed F1 vehicle) -
-
Disadvantages:
he axle is easy to be bent or deviated in the negative camber than in the
positive camber when load is applied on the axle.
Difficult to control due to wide load area. -
-
Camber
-0.5 ± 0.25°

08-14
3) Caster
The angle between the vertical line and king pin, which fixes the steering knuckle and front axle, (steering
column which connects the top and bottom ball joints in the independent axle type) when viewed the
tires from the side.
Caster: With considering the height difference between the wheel centers of the front and rear
wheels. (Under standard condition that the vehicle is on a level ground) ▶
Positive caster: Top of the king pin is tilted backward from the vertical line of the wheel center
when viewed the tires from the side ▶
Advantages:Directional force to go straight (following control)
Restoring force of the wheel (restored to the straight ahead direction)
Prevention of wheel shimmy (wheels wobble left and right) -
-
-
Negative caster: Top of the king pin is tilted forward from the vertical line of the wheel center when
viewed the tires from the side ▶
Advantages:
Disadvantages:Impact from the road is transferred to the steering wheel (steering wheel turns)
Poor straightness -
- Smaller turning radius -
Caster
4.6 ± 0.4°

09-34850-01
1. SPECIFICATION
Unit Description Specification
Front brake Type Ventilated disc
Outer diameter of discØ294 mm
Inner diameter of caliper cylinderØ43.0 x 2 mm
Thickness of disc 28 mm (wear limit: 25.4 mm)
Area of brake pad Above 60 cm2
Pad wear indicator Mechanical type
Rear brake Type Solid disc
Outer diameter of discØ299 m
Thickness of disc 10.4 mm (wear limit: 8.5 mm)
Area of brake pad Above 28.8 cm2
Pad wear indicator Mechanical type
Brake booster Type Vacuum assist type
Size8” + 9” (Tandem)
Master cylinder Type Tandem type(integrated level sensor)
Inner diameter of cylinderØ26.99 mm
Brake pedal Maximum operating stroke 150 mm
Pedal ratio 4 : 1
Free play 3 to 10 mm
Parking brake Type Mechanically expanded rear lining
Operating type Hand operated type
Inner diameter of drumØ190 mm
Brake oil Specification DOT 4
Capacity As required
Service Interval: Change the brake oil at every 2 years
DOT?
It is the quality grade of brake fluid established by US Department of Transportation.