CEMB USA C212 (A) - Manual (Page 10)

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s sx x
g g g g
d dx x
5 50 0°°
s sx x
g g g g
d dx x
4 4 g g 3 3 g g 1 1 g g 6 6 g g
s sx x
g g g g
d dx x s sx x
g g g g
d dx x s sx x
g g g g
d dx x
GB
5.2.6 - UNBALANCE OPTIMIZATION ►
This function serves to reduce the amount of weight to be added in order to balance the wheel ▪
It is suitable for static unbalance exceeding 30 g. ▪
It improves the residual eccentricity of the tyre. ▪
This operation is required if no unbalance has been measured previously; other-
wise go to the next step
Mark with chalk a reference point on the adapter and rim ▪
With the aid of a tyre changer, turn the rim on the tyre by 180° ▪
Refi t the wheel with the reference mark coinciding between rim and adapter ▪
RH di ▪ splay: percentage reduction
LH display: actual static unbalance which can be reduced by matching ▪
Mark the two positions of the rim and tyre, and turn the rim on the tyre until ▪
the positions correspond in order to obtain the optimization results shown on
the display.
CANCEL OPTIMISATION IN ANY PHASE.
5.2.7 - AUTOMATIC MINIMIZATION OF STATIC UNBALANCE ►
This program is designed to improve the quality
of balancing without any mental effort or loss of
time by the operator. In fact by using the normal
commercially available weights, with pitch of 5 in
every 5 g, and by applying the two counterweights
which a conventional wheel balancer rounds to
the nearest value, there could be a residual static
unbalance of up to 4 g. The damage of such
approximation is emphasized by the fact that static
unbalance is cause of most of disturbances on the
vehicle. This new function, resident in the machine,
automatically indicates the optimum entity of the
weights to be applied by approximating them in an
“intelligent” way according to their position in order
to minimize residual static unbalance.