CEMB USA C88 (A) - Manual (Page 24)

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30
8°
FRONT VIEW
LATERAL VIEW
mm
A B
GB
SONAR LR INSTRUCTION
In order to obtain the correct lateral eccentricity values, the sonar cone must be positioned inside the tyre shoulder.
The function of the LED is to make it easier to position the sonar correctly, but always bear in mind that it does not
indicate the focus of the pad as it is situated 30 mm further down.
The rim eccentricity measurement is important in order to try and reduce the total eccentricity of the wheel simply by
turning the tire on the rim.
Press the button from the eccentricity graph display frame
Hold the gauge as shown in Photo A in such a way that it does not turn during the measurement
Rest the round part of the gauge tip inside the rim as shown in Photo B.
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Press the button and slowly turn the wheel by hand, keeping a constant pressure on the gauge tip.
The total eccentricity, the rim and the tire values are simultaneously showed. Before passing to tire rotation on the
rim, check that the rotation result indicated on-screen is within tolerance. It is possible to set the minimum correction
limit below which it is never considered appropriate to intervene (
MINIMUM CORRECTION LIMIT
), and the maxi-
mum fi rst harmonic eccentricity limit of the rim below which it is considered of little use to turn the tire on the rim
(
FIRST HARMONIC LIMIT ).
The following buttons are enabled:
prints the eccentricity values measured (option)
returns to the eccentricity graph display frame.
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