Bosch BSA 43 Series Original Instructions Manual page 61

Step
2. Drive onto the brake dynamometer with the axle to
be measured first and keeping the vehicle straight.
Disengage gear. Release brake pedal.
!
If the vehicle is not straight on the set of rollers,
it will slide off to the side. Counter-steer until the
vehicle returns to straight position on the set of
rollers. Measurement is not to be started before
this has been done.
It may be necessary to drive off the set of rollers
and then drive the vehicle back on.
3. Automatic brake test commences.
i
Measurements are only possible on an axle basis in
Automatic mode.
4. Measure out-of-roundness (optional):
R
Slowly press brake pedal until braking forces on left
and right are greater than 1000 N.
R
Reduce braking force back down to rolling resistance.
R
Press brake pedal and hold steady at a braking force
greater than 500 N.
Robert Bosch GmbH
Automatic mode | BSA 43xx | 61
Result / Display
 Axle to be measured is positioned on set of rollers.
 If use is being made of axle load scales (special
accessory): Screen displays axle load (kg).
 Announcement phase:
$
The dynamometer motors start up,
the test rollers turn.
$
The rolling resistance is measured.
 Ready for braking force measurement.
 "Measurement" message.
 The brake dynamometer recognizes this action as the
starting signal for measuring out-of-roundness.
 Out-of-roundness measurement starts 3 seconds
after releasing brake pedal.
 The out-of-roundness of the brakes is measured for
5 seconds.
 The current values are displayed on the screen:
$
Out-of-roundness (~).
$
Pedal force (PD).
"
Out-of-roundness measurement is over.
en
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1 691 606 210 2015-07-29