Coats ProRide Wheel Balancer User Manual download pdf (Page 28)

24 • Important: Always read and follow instructions.

Sonar LR Instruction

In order to obtain the correct lateral eccentricity val-

ues, the sonar cone must be positioned inside the tire

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.

Figure 28 - Sonar Placement

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.

1. Press the button from the eccentricity

graph display frame

2. Hold the arm as shown in figure 29 in such a way

that it does not turn during the measurement

Figure 29 - Hold Arm As Shown

3. Rest the round part of the arm inside the rim as

shown in figure 30.

Figure 30 - Rest Round Part Of Arm On Rim As Shown

4. Press the button and slowly turn the wheel

by hand, keeping a constant pressure on the arm until

the following frame appears:

Figure 31 - Graph

The graph simultaneously shows the total eccentricity,

the rim and the tire values. Before turning the tire on

the rim, check if the POSSIBLE REDUCTION indicated

on-screen is sufficient to bring the wheel eccentricity

within tolerance. It is possible to set the minimum cor-

rection limit below which it is never considered appro-

priate to intervene (CORRECTION RUNOUT LIMIT), and

the maximum first harmonic eccentricity limit of the rim

below which it is considered of little use to turn the tire

on the rim (MAX. TRUE RUNOUT LIMIT).

The following buttons are enabled:

➤ Print

To print the runout values measured (option).

➤ Exit

Return to the previous screen.

8°

FRONT VIEW

LATERAL VIEW

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Coats ProRide Wheel Balancer User Manual Page 28