LAUNCH
X-631 Wheel Aligner Product Service Manual Appendix 4
8-10
AV2=2088
2#probe rod (vertical) clinometer zero coordinates
ClinoRatioV2=0.006227
2#probe rod (vertical) clinometer coefficient
Calculation:
AV2(new) = AV2 + (A1 – A2) / ClinoRatioV2
= 2088 + (-0.534 – 0.176 ) * 0.006227
= 2202
The calibration file (Check.ini) is modified as:
AV2=2202
4
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Test validation
Install the abnormal probe rod (FR) on the same wheel clamp to perform test validation, if the difference between the tested
value of the abnormal probe rod and that of the normal one is less than 0.02°, it indicates that the modification is successful.
After modification, the camber tested value of the abnormal probe rod (FR): A2 = -0.528°
5
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Write the modified calibration value in the probe rod
Exit main program, Run: installation directory \ ProbeUpdate.exe, and write FR calibrated value in the probe rod for
later update.
F. How to handle it if steering wheel cannot be centered?
Steering wheel cannot be centered and vehicle side pull are of two different issues, please distinguish them.
For the issue of Steering wheel cannot be centered:
when the vehicle
is driven straight-ahead, the steering wheel is not centered (has deviation to left or right).
It is mainly caused by toe-in angle, but if the factors described in the following, which cause the vehicle pull aside, have not
been eliminated completely, it can also cause that the steering wheel cannot be centered. If the wheel aligner is normal, and
the adjustment method is correct, and then the steering wheel should be centered in theory; but in many cases, due to the
