SUSPENSION DIAGNOSIS 2A-5
SSANGYONG MY2002
Action Checks
Replace the dampeners.
Maintain the proper load weight.
Replace the spring. Inspect for worn dampeners.
Check for an overloaded vehicle.
Inspect for a broken or a sagging spring.Tighten the stabilizer link.
Maintain the proper load weight.
Replace the spring. Inspect for a loose stabilizer link.
Check for an overloaded vehicle.
Inspect for a broken or a sagging spring.Action ChecksAction Checks
Replace the dampeners.
Replace the spring. Inspect for incorrect dampeners.
Inspect for an incorrect spring. Inspect for worn dampeners.
Inspect for a broken or a sagging spring.Replace the dampeners.
Replace the spring.Action ChecksReplace the spring.
Maintain the proper load weight.
Replace the spring. Inspect for a broken or a sagging spring.
Check for an overloaded vehicle.
Inspect for an incorrect or weak spring.Action Checks Inspect for worn or loose front wheel bearings.
Inspect for a broken or a sagging spring.
Inspect for a leaking wheel cylinder or caliper.
Inspect for warped rotors.
Inspect for an incorrect or an uneven caster.Replace the front wheel bearings.
Replace the spring.
Replace the wheel cylinder or the caliper.
Replace the rotors.
If the caster is beyond specifications, check the frame
and repair it, as needed.Action Checks
Low or Uneven Trim Height
Ride Too Soft
Ride Too Harsh
Body Leans or Sways in Corners
Suspension Bottoms
Erratic Steering when Braking
SSANGYONG MY2002
2A-6 SUSPENSION DIAGNOSIS
Check the front-wheel and the rear-wheel alignment.
Inspect for worn dampeners.
Inspect for worn or loose wheel bearings.
Inspect for excessive tire or wheel runout.
Inspect for a worn ball joint.
Check the steering gear preload adjustment.Align the front and the rear wheels.
Replace the dampeners.
Replace the wheel bearings.
Match-mount the tires. Replace the tires, as needed.
Replace the wheels, as needed.
Replace the ball joint.
Perform a rack bearing preload adjustment.Action ChecksReplace the seals and the hoses, as needed.
Clean the pinion valve assembly. Replace the pinion
valve assembly, as needed.
Adjust the power steering pump serpentine belt. Check the hydraulic system. Test the power steering
system pressure with a gauge.
Inspect for a sluggish steering gear valve.
Inspect for a loose power steering pump serpentine
belt.Action ChecksAction Checks
Purge the power steering system of air.
Tighten the steering gear mounting bracket nuts and
the bolts.
Tighten the intermediate shaft pinch bolts. Replace the
intermediate shaft, as needed.
Tighten the tie rod ends. Replace the outer tie rods, as
needed.
Replace the front wheel bearings. Inspect for air in the power steering system.
Inspect for a loose steering gear mounting.
Inspect the joint from the column to the steering gear
for loose connections or wear.
Inspect for loose tie rod ends.
Inspect for loose or worn front wheel bearings.
Steering Wheel Surges or Jerks
Cupped Tires
Steering Wheel Kickback
SUSPENSION DIAGNOSIS 2A-7
SSANGYONG MY2002
KAA2A010
HUB AND BEARING
Perform the following test to check for looseness in
the hub and bearing assembly:
1. Raise and suitably support the vehicle.
2. Remove the rear wheel. Refer to Section 2E, Tires
and Wheels.
3. Remove the caliper and the disc brake rotor. Refer
to Section 4E, Rear Disc Brakes.
4. Mount a dial indicator set with a magnetic base to
a stationary part of the vehicle.
5. Push and pull the wheel hub by hand. If the wheel
hub movement exceeds 0.03 mm (0.001 inch),
replace the hub and bearing assembly. Refer to
Section 2D, Rear Suspension.
6. Install the caliper and the disc brake rotor. Refer
to Section 4E, Rear Disc Brakes.
7. Install the rear wheel. Refer to Section 2E, Tires
and Wheels.
8. Lower the vehicle.
SECTION 2B
WHEEL ALIGNMENT
TABLE OF CONTENTS
Description and Operation....................................2B-2
Four Wheel Alignment ..........................................2B-2
Toe-in..................................................................2B-2
Caster.................................................................2B-2
Camber...............................................................2B-2
Diagnostic Information and Procedures...............2B-3
Tire Diagnosis......................................................2B-3
Radial Tire Lead/Pull............................................2B-4Vibration Diagnosis..............................................2B-6
Vehicle Height......................................................2B-7
Front Toe-in Adjustment .......................................2B-7
Front Camber Check............................................2B-8
Front Caster Check..............................................2B-8
Specifications.......................................................2B-9
Wheel Alignment Specifications...........................2B-9
Fastener Tightening Specifications.......................2B-9
SSANGYONG MY2002
2B-2 WHEEL ALIGNMENT
FOUR WHEEL ALIGNMENT
The first responsibility of engineering is to design safe
steering and suspension systems. Each component
must be strong enough to withstand and absorb extreme
punishment. Both the steering system and the front
and the rear suspension must function geometrically
with the body mass.
The steering and the suspension systems require that
the front wheels self-return and that the tire rolling effor t
and the road friction be held to a negligible force in
order to allow the customer to direct the vehicle with
the least effort and the most comfort.
A complete wheel alignment check should include mea-
surements of the rear toe and camber.
Four-wheel alignment assures that all four wheels will
be running in precisely the same direction.
When the vehicle is geometrically aligned, fuel economy
and tire life are at their peak, and steering and perfor
mance are maximized.
TOE-IN
Toe-in is the turning in of the tires, while toe-out is the
turning out of the tires from the geometric centerline or
thrust line. The toe ensures parallel rolling of the wheels.
The toe serves to offset the small deflections of the
wheel support system which occur when the vehicle is
rolling forward. The specified toe angle is the setting
which achieves 0 degrees of toe when the vehicle is
moving.
Incorrect toe-in or toe-out will cause tire wear and re
duced fuel economy. As the individual steering and
sus-pension components wear from vehicle mileage,
additional toe will be needed to compensate for the
wear.
Always correct the toe dimension last.
CASTER
Caster is the tilting of the uppermost point of the steering
axis either forward or backward from the vertical when
viewed from the side of the vehicle. A backward tilt is
positive, and a forward tilt is negative. Caster influences
directional control of the steering but does not affect
tire wear. Weak springs or overloading a vehicle will
affect caster. One wheel with more positive caster will
pull toward the center of the car. This condition will
cause the car to move or lean toward the side with the
least amount of positive caster. Caster is measured in
degrees.
CAMBER
Camber is the tilting of the top of the tire from the
vertical when viewed from the front of the vehicle. When
the tires tilt outward, the camber is positive. When the
tires tilt inward, the camber is negative. The camber
angle is measured in degrees from the vertical. Camber
in-fluences both directional control and tire wear.
If the vehicle has too much positive camber, the outside
shoulder of the tire will wear. If the vehicle has too
much negative camber, the inside shoulder of the tire
will wear.
DESCRIPTION AND OPERATION
WHEEL ALIGNMENT 2B-3
SSANGYONG MY2002
DIAGNOSTIC INFORMATION AND PROCEDURES
TIRE DIAGNOSIS
Irregular and Premature Wear
Irregular and premature tire wear has many causes.
Some of them are incorrect inflation pressures, lack of
regular rotation, poor driving habits, or improper wheel
alignment.
Rotate the tires if :
•The front tire wear is different from the rear.
The left and right front tire wear is unequal.
The left and right rear tire wear is unequal.
Check wheel alignment if :
The left and right front tire wear is unequal.
The wear is uneven across the tread of either front
tire.
The front tire treads are scuffed with “feather” edges
on the side of the tread ribs or blocks.
Tread Wear Indicators
The original equipment tires have built-in tread wear in
dicators to show when the tires need replacement.
These indicators appear as bands when the tire tread
depth becomes shallow. Tire replacement is recom
mended when the indicators appear in three or more
grooves at six locations.
KAA2B010
Radial Tire Waddle
Waddle is side-to-side movement at the front or rear of
the vehicle. It is caused by the steel belt not being
straight within the tire, or by excessive lateral runout
of the tire or wheel.
The vehicle must be road tested to determine which
end of the vehicle has the faulty tire. The rear end of
the vehicle will shake from side to side or “waddle” if
the waddle tire is on the rear of the vehicle. From the
driver’s seat, it feels as though someone is pushing
on the side of the vehicle.
If the faulty tire is on the front of the vehicle, the waddle
is more visual. The front sheet meld appears to be mov-
ing back and forth, and the drivers seat feels like the
pivot point in the vehicle.
Waddle can be diagnosed using the method of substitut-
ing known good tire and wheel assemblies on the prob-
lem vehicle.
1. Road test the vehicle to determine if the waddle is
coming from the front or the rear of the vehicle.
2. Install good tires and wheels from a similar vehicle
in place of those on the offending end of the problem
vehicle. If the source of the waddle is not obvious,
change the rear tires.
3. Road test the vehicle. If there is improvement,
install the original tires to find the offending tire. If
there is no a straight improvement, install good tires
in place of all four offending tires.
KAA2B020
SSANGYONG MY2002
2B-4 WHEEL ALIGNMENT
KAA2B030
RADIAL TIRE LEAD/PULL
Lead/pull is the deviation of the vehicle from a straight
path on a level road with no pressure on the steering
wheel. Lead is usually caused by:
Incorrect alignment.
Uneven brake adjustment.
Tire construction.
The way in which a tire is built can produce lead/pull in
the vehicle. Off-center belts on radial tires can cause
the tire to develop a side force while the vehicle rolls
straight down the road. If one side of the tire has even
a little larger diameter than the diameter of the other
side, the tire will tend to roll to one side. Unequal
diameters will cause the tire to develop a side force
which can produce vehicle lead/pull.
The radial lead/pull diagnosis chart should be used to
determine whether the problem originates from an align-
ment problem or from the tires. Part of the lead diagno-
sis procedure calls for tire rotation that is different from
the proper tire rotation pattern. If a medium-to high-
mileage tire is moved to the other side of the vehicle,
be sure to check for ride roughness. Rear tires will not
cause lead/pull.
WHEEL ALIGNMENT 2B-5
SSANGYONG MY2002
Step
1
2
3
4
5
6
7
8
9
10
Radial Tire Lead/Pull Diagnosis Chart
Action Yes
Go to Step 2
Go to Step 3
Go to Step 4
Go to Step 7
Go to Step 6
Go to Step 3
Go to Step 9
System OK
Go to Step 1
System OKNo
System OK
System OK
Adjust
alignment
Go to Step 5
Go to Step 1
-
Go to Step 8
Go to Step 1
Go to Step 10
Go to Step 1 Value(s)
-
-
-
-
-
-
-
-
-
-
1. Perform wheel alignment preliminary inspection.
2. Check the brakes for dragging.
3. Road test the vehicle.
Does the vehicle lead/pull?
1. Cross switch the front tire and wheel assemblies.
2. Road test the vehicle.
Does the vehicle lead/pull?
Check the front wheel alignment.
Is the alignment within specifications?
Compare the front camber and front caster to specifi-
cations.
Are they within specifications?
Check the vehicle frame.
Is the frame bent?
Straighten the frame.
Is the repair complete?
1. The probable cause is the tires.
2. Switch the left front tire and wheel assembly with
the left rear tire and wheel assembly.
3. Road test the vehicle.
Does the vehicle still lead/pull?
Switch the left front tire and wheel assembly with the
left rear tire and wheel assembly and replace the left
front tire.
Does the repair complete?
1. Switch the right front tire and wheel assembly with
the right rear tire and wheel assembly.
2. Road test the vehicle.
Does the vehicle still lead/pull?
Switch the right front tire and wheel assembly with the
right rear tire and wheel assembly and replace the right
front tire.
Is the repair complete?