Beissbarth MT 857 L Betriebsanleitung Seite 78

en 78 | MT 857 L | Balancing a wheel
1. Position the weights positioning gauge stop (8) on
the rim edge.
2. Move the outer weight pliers (5) to the position at
which the balance weights are to be attached.
3. Lock the detected measurement by tightening the
thumbscrew (7) and detect the value in position "J"
on the millimetric scale;
4. Use o u to enter the rim width value measured in
"mm".
"
All the required wheel data have been recorded.
9.8 Measuring unbalance
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A wheel can only be correctly balanced if all the
settings correspond to the mounted wheel.
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The automatic start is activated. In the following
description.
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Measurement can be interrupted at any time by
pressing < I >.
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To proceed with imbalance measuring, the "Balance
wheel" menu must be open.
1. Close the wheel guard.
 The imbalance measurement starts automatically,
otherwise press < I >.
2. After measuring, the balancing weight values
required are displayed on the monitor:
 left box for internal balancing level,
 right box for external balancing level.
3. Open the wheel protection cap only when the wheel
has completely stopped.
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If the imbalance measured on the wheel is very
high (e. g. static unbalance exceeding 50 g) it is
recommended to perform optimisation procedure
through which the static imbalance of the tyre is
balanced with the static imbalance of the rim (see
chap. "minimisation of the imbalance").
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With the non-standard programs (ALU2, ALU3,
Pax2), the function for splitting the balance
weights (split program) can be used to hide the
outside balance weight behind the spokes. (See
the "Splitting the balance weights (split program)"
section.)
9.9 Application of the balancing weights
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After you have secured the balancing weights, repeat
the unbalance measurement for checking purposes.
Overview of tools for attaching the balance weights
Balance weight Rim distance gauge
position
Electronic
–
OK
OK
–
9.9.1 Standard, ALU1 (PAX1), ALU4, ALU5 and all
static balancing programs
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On the monitor, symbols displayed on both sides
of the tire indicate the direction in which the wheel
must be turned to place it in the correct 12-o'clock
position for attaching the balance weights.
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In the following description the audio is activated.
Internal weight fixing:
1. Turn the wheel by hand.
 Once the correct position for attaching a bal-
ance weight has been reached, the monitor will
show a green symbol.
Balance
weight
Manual
holder
Rim Rim
flange well
– – OK
OK – –
– OK –
OK – –
Beissbarth GmbH