Launch X-631 Plus User Manual page 20

LAUNCH
for the measurement under this mode; the
accuracy of 90°run-out compensation mode is
comparatively lower, but each probe rod can
finish run-out
independently under this mode, needless to take
other probe rod as reference. This run-out
compensation operation mode can be selected in
the case of CCD sensor cannot work normally
caused by second-time lift or other factors; it is
not required to lift up the vehicle during rolling
run-out compensation
vehicle-pushing is required to accomplish the
run-out compensation operation. Among the
three kinds of run-out compensation modes
mentioned above, the accuracy of rolling run-out
compensation is lowest.
Vehicle-pushing Run-out Compensation
Vehicle-pushing run-out compensation is mainly used
for getting the inherent parameters of the four wheels
before the normal measurement, so as to ensure the
measurement more accurate. You do not always
perform this operation. If the measurement is
accurate, the user can directly skip this step, and start
from Caster Swing measurement. The interface is as
shown in Fig.4.11:
Operating procedures:
1. Turn the steering wheel to make the front wheels
on straight-ahead position. Hold the steering
wheel with the steering wheel holder, and then
remove the brake pedal depressor;
2. Respectively install four wheel clamps and probe
rods, and then adjust each probe rod level;
3. Release all four probe rods respectively, and
push the vehicle back by 45°, and then adjust all
probe rods level. Please click [NEXT] after
finished;
4. Push the vehicle back to the original position,
and then adjust all probe rods level. Please click
[NEXT] after finished.
Caster Swing
Kingpin measurement is aimed at the front wheels,
which includes kingpin inclination and caster. Correct
X-631/X-631+ Wheel Aligner
compensation operation
operation.
Fig.4.11
Kingpin Inclination can equalize the loads applied on
bearings so that the life of bearings can be prolonged
and the controllability of steering is improved. The
existence of kingpin inclination can make the
intersection point of steering axes and road surface
be in front of the adherent point between tire and the
ground, which can make use of the resistance from
the road surface to the tire to keep the vehicle driven
straight-ahead. The interface is as shown in Fig.4.12.
Only
Operating procedures:
1. Adjust the steering wheel to straight-ahead status,
i.e. when the toe-in of FL wheel is equal to the
toe-in of RF wheel, the small round ball on the
operating interface will move to middle position
and turn green from red. At this moment you can
adjust all probe rods level.
2. Turn the steering wheel left or right, after arriving
at the desired position, the small ball turns green
again from red. It indicates that the acquisition for
this side is finished.
3. Center the steering wheel, and turn it in reverse
direction, after arriving at the desired position, the
newly created small ball turns green again from
red, and the acquisition is finished.
After test finished, please center the steering
wheel. The system will automatically return to the
next page to check the measurement result. The
interface is as shown in Fig.4.13.
[Measurement for Max. steering angle]: According to the
prompts on the screen, read the data of Max. steering
angles indicated by mechanical turntables for FL and
4-5
Operation Instructions
Fig.4.12
HELP for vehicle
adjustment
Detailed data
Fig.4.13