Mercedes-Benz OM 904 LA, Руководство по эксплуатации

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Keep AdBlue ® /DEF out of the reach of chil-
dren.
H
Environmental note
Dispose of AdBlue
®
/DEF in an environmen-
tally responsible manner.
You will find further information on AdBlue
®
/
DEF in the "Service products" section
(
Y
page 54).
Special tool 001 589 00 71 00 pump
:
Supply unit with pressure reservoir
;
Pressure release
=
Filling hose
?
Filling pressure gauge
A
Pump
X
To check the pressure: unscrew the dust
protection cap from the valve of pressure
reservoir
:
.
X Screw filling hose
=
onto the valve of the
pressure reservoir.
X Read the pressure on pressure gauge
?
.
The pressure must be adjusted to
3.2 (
± 0.2) bar. The operating pressure of
3.2 ( ± 0.2) bar may not be exceeded. Oth-
erwise malfunctions may occur in the sys-
tem.
X
Increase or reduce the pressure if neces-
sary.
X
To increase the pressure: use pump
A
.
Adjust the pressure to 0.2 bar above the
specified operating pressure. When the fill-
ing hose is disconnected from the valve, a
pressure loss of 0.2 bar takes place.
X
To reduce the pressure: press but-
ton
;
several times.
X Only if the pump module or the pressure
reservoir was not replaced:
check the
pressure: if the pressure was increased, it
must be tested again after at least
5 minutes.
To do this, check the pressure as described
above.
If the drop in pressure is only approximately
0.2 bar, the pressure reservoir is OK.
If a greater pressure loss is apparent, the
pressure reservoir must be replaced.
X If the pressure reservoir is OK:
Equalise the pressure loss.
X Screw the dust protection cap onto the
valve of the pressure reservoir.
Engine brake - checking condition and
setting
Throttle valve lever in rest position
Work schedules
73
Notes on maintenance
Z