CEMB USA K8 (B) - Manual (Page 13)

I 0457 - 13 GB
5.5 - Out of balance 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 greater than 30 g.
- It improves the residual eccentricity of the tyre.
RIM
POSITION
TYRE
POSITION
- With a piece of chalk make a reference mark on the flange and the rim
- With the aid of a tyre remover, turn the tyre on the rim by 180°
- Refit the wheel in such a way that the reference marks on the rim and the flange
coincide.
- RH display: percentage reduction value
- LH display: actual static unbalance value which can be reduced by rotation
- Mark the two positions of the rim and tyre, and turn the tyre on the rim until the
positions correspond in order to obtain the optimization on the display.
CANCEL OPTIMISATION IN ANY PHASE.
Unbalance already measured
No previous unbalance
measurement
unbalance measurement
The led lights up
5.6 - Automatic minimisation 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 com-
mercially 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 automatically indicates the optimum
entity of the weights to be applied by approximating
them in an “intelligent” way according to their posi-
tion in order to minimize residual static unbalance.
Initial unbalance
Possible approximations
phase shift
With conventional
wheel balancer
Choice with minimum
static residual
residual static residual static residual static residual static