SsangYong Musso. Manual - part 224

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 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.

 WHEEL ALIGNMENT  2B-7

Camber

1. Remove the free wheel hub.

2. Measure camber with a wheel alignment equipment.

3. If camber measurements are not within specification, adjust

it by increasing or decreasing the number of adjusting shims
(1) inserted between the upper arm shaft and cross bracket.

Camber Change

Notice

Difference between the left and right should be adjusted
within 30’.

Specification

0°±30’

Caster

1. Remove the free wheel hub.

2. Measure caster with a wheel alignment equipment and a

turning radius gauge.

Specification

2° 30’ ± 30’

Adjusting Shims

1.6 Iarge

3.2 large

Increasing 1 ea

+ 19’

+ 38’

Decreasing 1 ea

- 19’

- 38’

2B-8     WHEEL ALIGNMENT

Increasing 1ea

- 11’

- 43’

3. If caster measurements are not within specification, adjust

it by increasing 1ea (rear) or decreasing 1ea (front).

Caster Change

Notice

Difference between the left and right should be adjusted
within 30’.

0.4 small

1.6 small

Decreasing 1ea

+ 11’

+ 43’

FRONT

Adjusting Shims

Increasing 1ea

+ 11’

+ 43’

0.4 small

1.6 small

Decreasing 1ea

- 11’

- 43’

REAR

Adjusting Shims

 WHEEL ALIGNMENT  2B-9

GENERAL DESCRIPTION AND SYSTEM OPERATION

FOUR WHEEL ALIGNMENT

CASTER

Caster is the tilting 91 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
influences 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.

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
thebody mass.

The steering and the suspension systems require that
the front wheels self-return and that the tire rolling effort
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
measurements 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
performance are maximized.

TOE

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
reduced fuel economy. As the individual steering and
suspension components wear from vehicle mileage,
additional toe will be needed to compensate for the wear.

Always correct the toe dimension last.