Reference Measurement - Bosch WBE 4510 Manual Original

en 62 | WBE 4510 | Maintenance
14.4.4 WBE 4510 calibration
i
Follow the instructions shown on the monitor.
1. Attach a motor vehicle wheel of medium size (e.g.
width 5.5", diameter 14") and in very good condi-
tion to the flange.
2. Press <r><r> and <OK>.
« The wheel guard closes automatically.
« The unbalance measurement commences auto-
matically.
« Calibration is started.
3. Enter the rim data and confirm with <OK>.
4. Press <OK>.
« The wheel guard closes automatically.
« The unbalance measurement commences auto-
matically.
5. Enter the calibrating weight or any balance weight
between 40 g and 120 g and confirm with <OK>.
6. Attach a calibrating weight or balance weight of the
value entered to the inner side of the wheel.
7. Press <OK>.
« The wheel guard closes automatically.
« The unbalance measurement commences auto-
matically.
8. Turn the wheel until the balance weight is in the 12
o'clock position.
9. Remove the calibrating weight or balance weight from
the inner side of the wheel and attach it to the outer
side (12 o'clock).
10. Press <OK>.
« The wheel guard closes automatically.
« The unbalance measurement commences auto-
matically.
11. Turn the wheel such that the weight is in the
6 o'clock position.
12. Press <OK>.
"
This completes calibration.
i
The calibration made is permanently stored auto-
matically.
14.4.5 Laser calibration
This calibration work can only be performed by a Ser-
vice engineer.
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1 695 655 163 2010-07-17
14.4.6

Reference measurement

i
Exact centering of the wheel is a basic prerequisite
for this reference measurement and for all balan-
cing operations.
1. Attach a motor vehicle wheel of medium size (e. g.
width 5.5", diameter 14") and in very good condition
to the flange.
2. Enter the wheel data (refer to Section 8.2).
3. Press <OK>.
« The wheel guard closes automatically.
« Measurement commences.
4. Create an artificial unbalance by attaching a test
weight of e. g. 60 g to one of the two sides.
5. Press <OK>.
« The wheel guard closes automatically.
« Measurement commences.The WBE 4510 must
display precisely this unbalance (value and po-
sition) on this side. The value indicated for the
other side must not exceed 5 g.
i
To check the position of the unbalance, turn the
wheel until the position recommended for attach-
ment of the balance weights is attained. The test
weight attached must be vertically beneath the axis
of rotation (6 o'clock position).
!
Calibration must be repeated in the following cases:
$
Deviation from specified unbalance value
(greater than 1 g on test weight side, more than
5 g on other side).
$
Deviation from specified unbalance position (test
weight not between 5:30 and 6:30 position).
6. Remove the test weight.
7. Release the wheel and turn it through approx. 35°.
8. Re-attach the wheel.
9. Press <OK>.
« The wheel guard closes automatically.
"
Measurement commences.On completion of this re-
ference measurement, the display must not exceed a
maximum unbalance of 10 g per side (15 g for particu-
larly heavy wheels). This error may be caused by the rim
centering tolerances. If this reference measurement
indicates greater unbalance, the components used for
centering the wheel must be checked for wear, play
and contamination.
Robert Bosch GmbH