25 8.3 Measuring Unbalance; 25 8.4 Securing The Balancing Weights; 25 8.4.1 Splitting The Balancing Weights (Split Program); 26 8.4.2 Clip-On Weights And Adhesive Weights - Bosch WBE 4100 Originalbetriebsanleitung

en 34 | WBE 4100 | Balancing a wheel
8.3 Measuring unbalance
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A wheel can only be correctly balanced if all the set-
tings correspond to the mounted wheel.
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Measurement can be stopped at any time:
$
Press the <STOP> key.
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Press the pedal.
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Open the wheel guard.
1. Close the wheel guard.
 The unbalance measurement commences automa-
tically.
 On completion of measurement the values of the
balance weights required are shown on the dis-
play.
On left of display inner balancing plane,
on right of display outer balancing plane.
2. Open the wheel guard.
8.4 Securing the balancing weights
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If the measured wheel unbalance is very high (e.g.
static unbalance in excess of 50 g), we recommend
matching the wheel by compensating the static
unbalance of the tire with the unbalance of the rim
(minimizing unbalance).
8.4.1 Splitting the balancing weights (Split program)
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If the balancing weights are to be attached behind
one or two spokes, start the Split program after
measurement.
1. Press the <SPLIT> button.

appears in the left-hand display, the number of
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currently preset spokes on the right.
 Both <SPLIT> button LEDs (Fig. 5, Item 3) light
up.
2. Enter the actual number of spokes using the <-> or
<+> button (Fig. 6, Item 1).
 The value is shown in the right-hand display.
3. Turn a spoke to the 12 o'clock position and press the
<SPLIT> button.
 The position of the spoke is now saved.
 Only one <SPLIT> button LED lights up.
 The value of the required balancing weight is
shown in the right-hand display.
4. Turn the wheel by hand.
 As soon as the position for attaching the balan-
cing weight is reached, the LED (Fig.5, Item 2)
lights up. An acoustic signal confirms that the po-
sition is correct (behind a spoke).
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5. Fasten the balancing weight with the required value
in the uppermost (12 o'clock) position of the wheel.
6. Continue to turn the wheel by hand, so that you can
attach another balancing weight behind a spoke (if
the displayed value is lower than the initial value).
 The other <SPLIT> button LED lights up.
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For 2 balancing levels, repeat the procedure for the
2nd balancing level from step 4.
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To exit the Split program and view the display of a
balancing weight, press the <SPLIT> button again.
8.4.2 Clip-on weights and adhesive weights
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LEDs in arrow form (Fig. 5, Item 7) indicate the di-
rection in which the wheel has to be turned in order
to reach the 12 o'clock position for securing the
balancing weight.
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In the description below, sound and automatic start
are active (see section 10)
1. Turn the wheel by hand.
 As soon as the correct position for attaching a ba-
lancing weight is reached, the LED (Fig.5, Item 2)
lights up and an acoustic signal confirms that the
position is correct.
2. Fasten the balancing weight with the required value
in the uppermost (12 o'clock) position of the wheel.
3. Repeat the procedure for the 2
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After you have secured the balancing weights, repeat
the unbalance measurement for checking purposes.
balancing level.
nd
Robert Bosch GmbH