GB
Page 36 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
18.0 MATCHING PROCEDURE (Rim - Tyre
Optimization)
The Matching procedure offsets strong unbalance,
reducing the weight quantity to be fitted on the wheel
to achieve balancing. This procedure permits reducing
unbalance as much as possible by offsetting the tyre
unbalance with that of the rim.
Proceed to dynamic unbalance measurement dis-
playing by performing a standard wheel spin (see
Par. 14.3.4).
THE MATCHING PROCEDURE CAN
BE CARRIED OUT ONLY IF THE
STATIC UNBALANCE IS > 30 G.
Once the unbalance values have been determined,
press the OPTIONS key several times. The LED
relevant to the “MATCHING” symbol (see Fig. 53).
Fig. 53
“MATCHING” function selected
Press key to confirm “MATCHING” mode per-
formance.
The “P 1” symbol flashes on outer D2 display to indi-
cate that the 1st step of the procedure shall be carried
out (see Fig. 54).
STEP 1. Make a reference mark, using chalk for in-
stance, of the position of the rim and tyre, remaining
in line with the arrow on the flange, so as to be able
to fit the rim back on in the same position on the
machine. Press key to confirm that step 1 has
been completed.
Fig. 54
Once STEP 1 operations are completed,
press key R/C to confirm
Make a reference mark on the rim and tyre, in line
with the arrow on the flange
STEP 2. Remove the wheel from the wheel balancer.
Remove the tyre and turn it on the rim through 180°.
Press key to confirm that step 2 has been
completed.
Fig. 55
Once STEP 2 operations are completed,
press key R/C to confirm
STEP 3. Fit the wheel back on the wheel balancer,
positioning the reference mark on the rim in line with
the arrow on the flange.
1297-M043-0
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