INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 29 of 64
15.3 Unbalance measurement
15.3.1 Dynamic balancing
Dynamic balancing is a procedure that offsets the wheel
vibrations using 2 weights on different planes.
To perform a dynamic measurement spin:
- make sure there are no stones and/or mud on the
wheel;
- remove any counterweights;
- fit the wheel and make sure it is properly fastened
(see Chap. 12).
Enter the wheel measurements (par. 15.1) and close the
protection guard to perform the automatic wheel spin.
If the protection guard is already closed, press
key to perform wheel spin manually.
In just a few seconds, the wheel runs at normal speed
and the wheel balancer display shows wheel rotation
(see
Fig. 49
).
After the spin, the wheel stops automatically, also tak-
ing into account the measured unbalance so that the
fitting position of the outer weight is
exactly at “12 o’
clock”
. Open the protection guard.
Fig. 49
Press in case of emer-
gency
The display unit indicates the direction in which to
move the wheel to fit the weights and how much weight
is needed to correct the unbalance (see
Fig. 50
).
Weight can be determined in "grams" or "ounces"; in
this manual examples are shown in grams. To change
the unit of measurement from "grams" to "ounces",
see Chap. 19.
Once the unbalance of the inside and outside of the
wheel is known, it is possible to proceed with position-
ing for correction of unbalance (Par. 15.3.2).
Fig. 50
1
4
3
2
2
5
6
7
8
KEY
1 – Total inner weight
2 – Arrows to help positioning in correction weight
fitting point
3 – Total outer weight
4 – R e t u r n t o i n i t i a l p r o g r a m p h a s e
(RED) (F1)
5 – Selected
once
: display next row of keys
( M A T C H I N G f u n c t i o n ) ( C h a p . 1 9 )
Selected
2 twice
: display next row of keys (static
unbalance, see
Fig. 51
) (YELLOW) (F2)
6 – Displays exact unbalance (resolution 1 g instead
of 5 g) (CENTRAL)
7 – Displays the previous screen page (BLUE) (F3)
8 – Run starts by closing the guard (GREEN) (F4)
Fig. 51
1
2
3
KEY
1 – Return to dynamic unbalance (RED) (F1)
2 – Display next row of keys (YELLOW) (F2)
3 – Displays the static unbalance (see Par. 15.3.4)
1297-M010-0_R
G2.124R - GP2.124R
RAVAGLIOLI S.p.A.
