Chery Tiggo T11 LHD. Manual — part 34

T11 Service Manual Chassis System

Mount

according

to

manufacturer's

specification.

2. Inspect and Adjust Caster Angle, Camber Angle, Front Wheel Toe-in Angle and Steering

angle

The front wheel alignment specification is described as below:

King pin caster angle

2

0

50’ ±1

0

Front wheel camber angle

-0.85

0

±1

0

Front wheel toe-in (for single wheel)

±5’

King pin inclination angle

11

0

30’ ±1

0

Max. steering angle of inner wheel

37

0

Max. steering angle of outer wheel

31.2

0

1) Caster angle

Caster angle is secured by structural design; therefore, it is unnecessary to be adjusted during

operation.

The Effect of Caster Angle

The major function of caster angle is to keep the vehicle driving straight forward. If the caster

angle is positive, when turning the front wheel, the vehicle inner side will descend downward and

the chassis will consequently ascend. Therefore, the load will be increased and transferred onto

steering knuckle. If the caster angle of the two wheels is identical, the vehicle will go back to the

direction of straight forward after steering. Increasing positive caster angle will enhance the

stability of steering wheel. However, the steering force will increase as well. Reducing positive

caster angle will reduce the stability of steering wheel. However, the steering force will be reduced.

The caster angle will not affect tire wear, and it is used to stabilize the driving direction and ensure

automatic straight returning back to the center when steering. If the vehicle is equipped with a

conventional mechanical steering system, the caster angle is usually very small, sometimes even

tends to negative value, thus make steering easier. If the vehicle is equipped with power steering

device, a larger positive angle is usually set to make the driver feel well when steering. Increasing

positive caster angle will result in an increase of steering force as well as increase of vehicle

stability when driving forward.

2) Camber angle

Under normal conditions, it is unnecessary to adjust camber angle after assembling independent

suspension and wheel steering knuckle. If the wheel camber deviates from tolerance limit due to

some other reasons, it shall be calibrated via connecting bolt that joins the independent suspension

and the steering knuckle.

T11 Service Manual Chassis System

a) Prior to calibrating, firstly inspect (visual inspection) whether there are damages to driving

components, and then replace the defective ones.

b) If the front-wheel camber angle

exceeds deviation limit, loosen the

connecting bolt

① that joins the front

shock

absorber

and

the

steering

knuckle; finally move the wheel to

perform calibration.

3) Front wheel toe-in

Toe-in shall be inspected and adjusted via special wheel alignment detector.

a) Prepare for alignment and adjustment according to specific requirement of the detector, then fix

steering wheel facing straight forward via commercially available steering wheel retainer (steering

wheel must be located at central position with a deviation not exceeding ±5°). And the lower

clamping flange bolt of steering shaft must be horizontal.

b) Unscrew the lock nut of steering tie rod.

c) Remove the flexible jacket snap ring (2)

via pliers.

Note: replace the snap ring if its elasticity is

insufficient.

d) Rotate the toe-in adjusting rod to adjust

the length to specified value as required.

e) Tighten the lock nut (1), then remount

jacket snap ring (2), and inspect the

tightening condition of the lock nut and

ensure the jacket is properly located.

f) After adjusting the front wheel toe-in, inspect whether steering wheel is horizontal. Otherwise

loosen the steering wheel lock nut, and adjust steering wheel to horizontal position, finally torque

the steering wheel lock nut to specification (27~33Nm).

4) Inspect front wheel steering angle

After replacing the steering knuckle tie rod joint or adjusting the toe-in, inspect the steering angle.

If the front wheel steering angle doesn't conform to the specification, inspect and adjust the length

of left and right steering knuckle tie rod.

Ⅳ Guideline of Troubleshooting

T11 Service Manual Chassis System

Problems

Possible causes

Remedies

Tire undue wear

Incorrect tire pressure
Incorrect wheel alignment parameter

Adjust
Adjust

Tire noise

Incorrect tire pressure
Tire wear

Adjust
Inspect, adjust or replace

Road noise or vehicle body vibration Insufficient tire pressure

Tire unbalance
Wheel rim or tire deformation
Tire uneven wear

Adjust
Adjust
Repair or replace
Inspect, adjust or replace

Vertical vibration of steering wheel Tire and wheel rim excessive deflection

Wheel screw cap or axle stub loose
Tire unbalance
Engine suspension rubber crack or wear
Gearbox bracket rubber crack or wear

Replace
Lock
Adjust
Replace
Replace

Circular vibration of steering wheel Tire and wheel rim excessive deflection

Wheel screw cap or axle head loose
Tire unbalance
Tire uneven wear
Insufficient tire pressure
Damage or wear of front-wheel bearing
Steering system malfunction
Suspension system malfunction

Replace
Lock
Adjust
Inspect
Adjust
Replace
Inspect
Inspect

Unilateral deflection of steering wheel Incorrect tire pressure

Wire excessive or uneven wear
Steering system malfunction
Brake system malfunction
Suspension system malfunction

Adjust
Inspect
Inspect
Inspect
Inspect

Traveling instability

Right and left tire pressure non-uniform.
Wheel rim or tire deformation
Wheel screw cap loose
Steering system malfunction
Suspension system malfunction

Adjust
Repair or replace
Lock
Inspect
Inspect

Braking deflects to one side

Right and left tire pressure non-uniform
Brake system malfunction

Adjust
Inspect

Steering wheel is heavy

Insufficient tire pressure
Steering system malfunction
Suspension system malfunction
Incorrect wheel alignment parameter

Adjust
Inspect
Inspect
Inspect

Poor straight returning of steering
wheel

Insufficient tire pressure
Steering system malfunction
Suspension system malfunction
Incorrect caster angle of front wheel

Adjust
Inspect
Inspect
Adjust

T11 Service Manual Suspension and Steering

Chapter 4

Suspension/Transmission and Axle