Daewoo Korando. Instruction - page 204
WHEEL ALIGNMENT 2B-3
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.
4. Install original tires one at a time to find the offending
tire.
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:
l
Incorrect alignment.
l
Uneven brake adjustment.
l
Tire construction.
The way in which a tire is built can produce lead/pull in
the vehicle.011-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
alignment problem or from the tires. Part of the lead
diagnosis 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.
2B-4 WHEEL ALIGNMENT
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?
1. Check the front wheel alignment.
Is the alignment within specifications?
1. Compare the front camber and front caster to
specifications.
Are they within specifications?
1. Check the vehicle frame.
Is the frame bent?
1. 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?
1. 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?
1. 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?
Action
Radial Tire Lead/Pull Diagnosis Chart
Step
1
Values(s)
-
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 OK
No
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
2
3
4
5
6
7
8
9
10
-
-
-
-
-
-
-
-
-
WHEEL ALIGNMENT 2B-5
VIBRATION DIAGNOSIS
Wheel imbalance causes most highway speed vibration
problems. A vibration can remain after dynamic
balancing because:
l
A tire is out of round.
l
A rim is out of round.
l
A tire stiffness variation exists.
Measuring tire and wheel free runout will uncover only
part of the problem, All three causes, known as loaded
radial runout, must be checked using method of
substituting known good tire and wheel assemblies on
the problem vehicle.
Preliminary Checks
Prior to performing any work, always road test the car
and perform a careful visual inspection for:
l
Obvious tire and wheel runout.
l
Obvious drive axle runout.
l
Improper tire inflation.
l
Incorrect trim height.
l
Bent or damaged wheels.
l
Debris build-up on the tire or the wheel.
l
Irregular or excessive tire wear.
l
Improper tire bead seating on the rim,
l
Imperfections in the tires, including: tread
deformations, separations, or bulges from impact
damage. Slight sidewall indentations are normal and
will not affect ride quality.
Tire Balancing
Balance is the easiest procedure to perform and should
be done first if the vibration occurs at high speeds. Do
an off-vehicle, two-plane dynamic balance first to correct
any imbalance in the tire and wheel assembly.
An on-vehicle finish balance will correct any brake drum,
rotor, or wheel cover imbalance, If balancing does not
correct the high-speed vibration, or if the vibration occurs
at low speeds, runout is the probable cause.
2B-6 WHEEL ALIGNMENT
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
WHEEL ALIGNMENT
Vehicle Height
1. Check the tire for proper inflation.
2. Measure ‘A’ from the center of the lower arm rear mounting
bolt end to the ground.
3. Measure ‘B’ from the center of the steering knuckle shaft to
the ground.
4. If the difference between ‘A’ and ‘B’ is not within specification,
adjust vehicle height using torsion bar height control bolt.
‘B’ - ‘A’
Notice
Before wheel alignment, adjust vehicle height adjustment
first.
31 - 36mm
Toe-in
1. Measure toe-in.
Specification
0 - 4mm
2. If toe-in is not within specification, loosen the tie rod nuts
and adjust it by turning the tie rod.
