Important Safety Notes - Mercedes-Benz Unimog Operating Instructions Manual

Brakes
164
Do not let anyone enter or exit the vehicle
during the test. This will help to prevent you
from mistaking pressure loss, due to air-
sprung seats or the level control system, for
leakage.
X
Stop the vehicle on a level surface.
X
Apply the parking brake.
X
Use chocks to safeguard the vehicle
against rolling away.
X
Release the parking brake.
X
Turn the key to position 2 in the ignition
lock.
X
Reserve pressure
Call up the
dow in the ã monitoring information menu
in the on-board computer (
X
Run the engine until the display shows a
reservoir pressure of at least 16 bar.
X
Switch off the engine.
X
Turn the key to the drive position in the
ignition lock.
X Reserve pressure
Call up the
dow in the ã monitoring information menu
in the on-board computer once again
( Y page 124).
X
Depress the brake pedal and keep it in this
position.
X
Read off the reservoir pressure after
approximately 1 minute.
X
Read off the reservoir pressure again after
another minute.
If no significant loss of pressure can be
detected in the
window in the on-board computer after this
minute, the compressed-air brake system
is free from leaks.
If a significant loss of pressure is detected,
the compressed-air brake system is leak-
ing.
X
If the compressed-air brake system is leak-
ing, have it checked and repaired at a quali-
fied specialist workshop.
menu win-
Y page 124).
menu win-
Reserve pressure
menu
ABS (Anti-lock Braking System)

Important safety notes

If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of an accident nor
override the laws of physics.
Driving safety systems are merely aids
designed to assist driving. You are responsi-
ble for the distance to the vehicle in front, for
vehicle speed and for braking in good time.
Always adapt your driving style to the prevail-
ing road and weather conditions and maintain
a sufficient, safe distance from other road
users. Drive carefully.
ABS regulates the brake pressure to prevent
the wheels from locking when braking. This
means that the vehicle can still be steered
while braking.
ABS is operational from walking pace, regard-
less of road surface conditions. If the road is
slippery, ABS intervenes even if you only
brake gently.
G
WARNING
If ABS is malfunctioning, the wheels could
lock when braking. The steerability and brak-
ing characteristics are thus severely impaired.
There is an increased risk of skidding and an
accident.
Drive on carefully. Have the ABS checked at a
qualified specialist workshop as soon as pos-
sible.
The tyre pressure table can be found in
i
the "Technical data" section (
ABS only functions properly if you use wheels
with the specified tyre size.
The full effect of the ABS system is only ach-
ieved when the tyre pressure is set correctly
and adjusted to the load. In wintry driving
conditions, always use winter tyres (M+S
tyres), if necessary with snow chains.
When the front-axle differential lock is
engaged, ABS is deactivated.
Y page 342).