GB
Page 30 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
15.4.1 ALU1 procedure
ALU1 balancing is a procedure that offsets the wheel
vibrations using 2 weights on different planes. Adhesive
weights are used on rim inner and outer edge, and is
usually carried out on alloy rims.
To launch a ALU1 measurement, proceed as follows:
- 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 Chapt. 13.0).
- Press key
to select the type of ALU1 correction
(see Par. 15.4).
- Determine wheel dimensions (see Par. 15.1.1).
- Press key
to perform a wheel spin.
In just a few seconds, the wheel runs at normal speed
and the display screens D1-D2 show wheel rotation.
After the spin, the wheel stops automatically, taking
into account the measured unbalance so that the fitting
position of the outer weight is around at “12 o' clock”.
Display screens D1-D2 show the weight required to
correct the unbalance. The nearby LEDs show the
direction wheel has to be moved in to fit weights (see
Fig. 27
).
LEDs showing positioning
in correct weight
fitting point
Total outer weight
Total inner weight
Fig. 27
To position wheel on the OUTER side, turn it in the
direction shown by the LEDs, until reaching the correct
position (see Par. 15.3.6). Upon reaching the correct
position, the wheel is locked automatically.
Fit the adhesive weight on wheel outer side (in the
example 25 g). The outer side weight must be posi
-
tioned
by hand on the vertical – “at 12 o’clock”
(see
Fig. 28 ref. 1
).
1
Fig. 28
Unlock the wheel by pressing key
.
To fit the adhesive weight on the INNER part of the
wheel, turn it in the direction shown by the LEDs un
-
til the correct position is reached “at 12 o'clock” (see
Par.
_
15.3.6). Upon reaching the correct position, the
wheel is locked automatically.
The adhesive weight on the inner side of the wheel. The
inner side weight must be positioned
by hand on the
vertical – at 12 o’clock
(see
Fig.
_
29 ref.
_
1
).
Fig. 29
1
1
ALU1 balancing procedure is completed.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD