25
Bleedingvehicleswithfuelprefilter
Bleeding t
he fuel sy
st
em
Towing and Recovery | Actros, Antos (Model 963), Arocs (Model 964)
General safety information
%
Environmental note
Dispose of the water/fuel mixture in an environmen-
tally safe manner.
If water has settled in the inspection glass
=
, drain the wa-
ter from the fuel prefilter
:
before bleeding. Drain the fuel
prefilter
:
regularly.
Drainingthefuelprefilter
M
Open the cap of the fuel tank.
M
Place a container under the drain screw
;
.
M
Open the drain screw
;
.
M
Press the hand pump
?
and collect the water/fuel
mixture.
M
Close the drain screw
;
.
Bleedingthefuelprefilter
M
Open the cap of the fuel tank.
M
Place a container under the fuel prefilter
:
.
M
Slacken the bleed screw
A
.
M
Operate the hand pump
?
until the fuel emerges at the
bleed screw
A
free of bubbles.
M
Tighten the bleed screw
A
. If there was no fuel in
the fuel tank, press the hand pump
?
again until a
noticeable resistance can be felt.
M
Also bleed with the hand pump at the engine.
M
Close the cap of the fuel tank.
M
Shift transmission to neutral.
M
Apply parking brake.
M
Press start/stop button
B
all the way down and hold. Do
not depress the accelerator pedal.
The starting procedure is automatically interrupted.
M
If the engine ignites regularly, release start/
stop button
B
and depress accelerator pedal several
times.
The fuel system bleeds itself completely.
M
If the engine does not start, bleed using the hand pump
at the engine.
M
If the engine fails to start, check the fuel system.
Fuel prefilter (Actros)
Ë
Do not bleed the fuel system of engines
OM 470/471/473 using multiple starting
procedures. Otherwise you can damage the starter.
Ë
If you start the engine after bleeding: Wait for
10 minutes are three starting attempts. You could
otherwise damage the starter.
