Mercedes-Benz Unimog U 20, Manual

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Cable guides
i
Correctly seal the cable guides on the
bulkhead of the cab after changing devices.
If the cable guides have not been correctly
sealed, the cab can become damp. This can
cause corrosion to electric and other com-
ponents in the interior. Observe the infor-
mation contained in the vehicle's Operating
Instructions.
Heating/ventilation blower
U 300/400/500 only.
The blower draws in snow powder, salt and
dust which has collected in the ventilation fil-
ter housing.
For heavy-duty snow-clearing operations,
clean the ventilation filter housing weekly to
avoid malfunctions in the ventilation and
heating systems:
X
Open the front flap; see the vehicle's Oper-
ating Instructions.
X
Pull housing lid
:
from the side retention
clips and remove it in an upwards direction.
X
Remove fresh air/air recirculation flap
=
together with connecting rod
;
.
X
Remove the retaining grille together with
the ventilation filter mat by handles
?
.
X
Clean the ventilation filter housing.
X
Install the retaining grille together with the
ventilation filter mat.
X
Install fresh air/air recirculation flap
=
together with connecting rod
;
.
X
Install housing cover
:
.
X
Close the front flap; see the vehicle's Oper-
ating Instructions.
Service brake
Clean the service brakes after winter to avoid
incurring damage.
X
Raise the vehicle, secure it using jack
stands and remove the wheels; see the
vehicle Operating Instructions.
Example: disc brake
10
Service brake
Cleaning the vehicle