FCAR FD505 Wheel Alignment System User Manual
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(3)
Measure: reading data.
(4)
Vehicle adjustment: The order rule for vehicle adjustment is
：
first the rear wheel
，
then the front wheel; the camber angle first then the toe; the front wheel caster angle
first then the camber angle at last the toe.
(5)
Print result.
Our focus is on the analysis of measurement results.
In the foregoing "Basic Concept of Positioning Angle", some of the effects of
deviations on the performance of the vehicle have been introduced. Below we summarize
the symptoms:
1)
Off-track
The reason caused off-track:
①
The front wheel caster angle left and right is asymmetrical and the deviation exceeds
0.5°. The vehicle deviates to the side with the small caster angle.
②
The front wheel camber angle left and right is asymmetrical and the deviation
exceeds 0.5°. The vehicle deviates to the side where the camber angle of the front
wheel is the largest.
③
The rear wheel camber angle is asymmetrical and the deviation exceeds 0.5°. The
vehicle deviated to the side with the smallest camber of the rear wheel.
④
The change in the wheelbase of the vehicle can be observed based on the retraction
angle of the front and rear axles. When the sum of the front and rear retraction angles
exceeds 0.2°, a sensible deviation will occur, and the deviation will be toward the
side with a small wheelbase.
