Unbalance Minimization - Sicam SBMV955 Manual Original

en 44 | SBMV955 | Unbalance minimization
9.

Unbalance minimization

If the unbalance measured at the wheel is extremely
high (e. g. static unbalance >50 g) it is advisable to
perform "unbalance minimization".
The program permits minimization of the total
unbalance by providing compensation for the static
unbalance of the tyre by way of that of the rim.
€
From the "main page" press <F4>.
« "Unbalance minimization" is opened.
!
Work as accurately as possible throughout the entire
procedure. Follow the instructions shown on the
monitor!
PHASE 1 to PHASE 4:
1. Close the wheel guard.
« Measurement commences.
2. Turn the wheel until the valve is in the 12 o'clock
position.
3. Press <OK>.
« The reference position of the wheel on initial
starting is stored.
4. Make a reference mark on the tyre (corresponding
to the position of the valve).
5. Detach the wheel from the flange.
6. Turn the tyre on the rim through 180 degrees.
i
The mark previously made provides a guide.
7. Clamp the wheel.
8. Turn the valve to the 12 o'clock position.
9. Press <OK>.
« The new position of the wheel on the fl ange is
stored.
10. Close the wheel guard.
« Measurement commences.
Values obtained:
$
Rim unbalance
$
Current unbalance
$
Tyre unbalance
$
Minimum possible unbalance
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After studying the values, further unbalance
minimization is required (PHASE 5 to 7).
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PHASE 5 to PHASE 7:
1. Turn the wheel until the arrows on the monitor are
centered.
2. Mark the tyre at the 12 o'clock position.
3. Press <OK>.
4. Detach the wheel from the flange.
5. Turn the tyre on the rim until the mark coincides
with the position of the valve.
6. Clamp the wheel.
7. Turn the valve to the 12 o'clock position.
8. Press <OK>.
« The new position of the wheel on the fl ange is
stored.
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To turn the tyre on the rim it may be necessary to
deflate the tyre, unseat it again and re-inflate after
turning.
9. Close the wheel guard.
« The test run commences.
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If the test run is to be repeated, the monitor displays
an appropriate message. In this case, continue again
with minimization (PHASE 5 onwards).
"
On completion of the test run, the unbalance is
automatically compared to the minimum residual
unbalance value. If the difference between these two
values is below the maximum permissible level, the
tyre and rim are optimally matched.
10. Press <OK>.
« Return to "main page".
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If the test run is not properly completed, the entire
procedure (as of PHASE 1) must be repeated.
11. Press <OK>.
« Return to "main page".
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