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Servobrake
Warning
The s
servo iis o
operated b
by a
a v
vacuum
which iis o
only g
generated w
when tthe
engine iis rrunning. F
For tthis rreason
the v
vehicle s
should n
not b
be a
allowed
to rroll w
with tthe e
engine s
switched
off.
When tthe b
brake s
servo iis n
not w
work-
ing b
because, ffor e
example, tthe
vehicle iis b
being ttowed o
or a
a d
defect
has o
occurred o
on tthe b
brake s
servo
itself, tthe b
brake p
pedal m
must b
be
pressed c
considerably h
harder tto
compensate ffor tthe a
absence o
of
servo a
assistance.
Anti-locking b
brake s
system*
The ABS plays a major part in increasing
the active safety of the vehicle. The big
advantage when compared with a conven-
tional brake system is that even when
braking hard on a slippery road surface
the best possible steerability is retained
for the road condition because the wheels
do not lock. Steering c
control iis tthere-
fore m
maintained, g
giving tthe b
best d
dri-
ving s
stability p
possible.
However, one must not expect the ABS
system to shorten the braking distance
under all conditions. When driving on
gravel or on fresh snow covering a slip-
pery surface, i.e. when one should be dri-
ving very slowly and carefully, the stop-
ping distance may even be slightly longer.
How tthe A
ABS* s
system w
works
An automatic check is made when a
speed of approx. 6 km/h is reached.
When this happens a pumping noise can
be heard.
When the turning speed of a wheel
reaches a level which is too low for the
vehicle speed and it tends to lock, the
brake pressure to this wheel is reduced.
On the front axle the brake pressure is
regulated for each wheel individually,
whereas on the rear axle, the pressure is
regulated for both wheels at the same
time. As a result the braking effect is the
same for both rear wheels and the driving
stability is retained as far as possible.
This rregulating p
process m
makes iitself
known b
by m
movement o
of tthe b
brake
pedal a
and iis a
accompanied b
by n
noises.
This is done deliberately as a warning to
the driver that a wheel or the wheels are
in the locking range. So tthat tthe A
ABS
can rregulate e
effectively iin tthis rrange
the
b
brake
p
pedal
m
must
rremain
depressed –
– o
on n
no a
account s
should iit
be p
pumped!
Warning
However tthe A
ABS s
system c
cannot
overcome tthe p
physical llimits. T
This
must b
be b
borne iin m
mind p
particularly
on s
slippery o
or w
wet rroads. W
When tthe
ABS c
comes iinto tthe c
control rrange
the s
speed m
must iimmediately b
be
adapted tto tthe rroad a
and ttraffic
conditions. T
The iincreased a
amount
of s
safety a
available m
must n
not ttempt
one iinto ttaking rrisks.
Should the ABS system fail this is shown
by one or two warning lights. See the
"Warning lamps" chapter.
3.8
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INTELLIGENT TECHNOLOGY
TIPS AND MAINTENANCE
Содержание Arosa 2003
Страница 1: ...arosa Owner s manual ...
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Страница 38: ...2 2 INSTRUMENT PANEL HANDLING INSTRUCTIONS Table ...
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Страница 224: ...Inglés 6H0012003CE 07 03 GT9 ...