Mercedes-Benz OM 471, Introduction Into Service Manual, Page: 96 / 225

Functions
GF47.00>W>3011HA
Fuel low pressure circuit function 20.7.11
ENGINES 471.9 in MODEL 963 with CODE (M5R) Engine version EEV
ENGINES 471.9 in MODEL 963 with CODE (M5Y) Engine version Euro V
W47.00
>
1043
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79
1 Fuel tank
2 Fuel filter module
3 Fuel pump
3.1 Pressure limiting valve
3.2 Bypass valve
5 Fuel system high pressure pump
6 Rail
7 Fuel prefilter
7.1 Wastegate
8 Water separator
9 Fuel filter
10 Fuel cooler
11 Throttle
12 Check valve
13 Fuel accumulator
14 Hand>operated delivery pump
15 Shutoff valve in the fuel feed (locked
in open position)
16 Shutoff valve in the fuel return
(locked in open position)
17 Shutoff valve (in the form of an
elastomer ball, which prevents
draining of the intake duct for
standstill of the engine)
18 Evaporation volume of the diesel fuel
metering device (for regeneration of
the diesel particulate filter (DPF) > for
engine version Euro VI)
B602 Fuel temperature sensor
B622 Rail pressure sensor
B638 Fuel filter module pressure sensor
Y608 Cylinder 1 fuel injector
Y609 Cylinder 2 fuel injector
Y610 Cylinder 3 fuel injector
Y611 Cylinder 4 fuel injector
Y612 Cylinder 5 fuel injector
Y613 Cylinder 6 fuel injector
Y642 Quantity control valve
A Fuel feed/suction side
B Fuel feed (thrust side)
C Fuel high pressure
D Fuel return
E Bleeding
19 2>stage valve
20 Pressure limiting valve
22 Filling valve
23 Pressure preparation flange for the
fuel supply of the diesel fuel metering
device
(for engine version Euro VI)
30 Fuel return line from fuel cooler to
fuel filter module
31 Fuel feed line from fuel filter module
to fuel pump
32 Fuel feed line from fuel pump to fuel
filter module
33 Fuel feed line from fuel filter module
to fuel system high pressure pump
35 Fuel return line from 2>stage valve
36 Fuel return line of pressure booster
37 Fuel return line of nozzle needle
valves
38 Fuel return line from pressure limiting
valve
39 Vent line (from water separator)
40 Vent line (from fuel filter)
41 Fuel return line from pressure
preparation flange for fuel supply of
diesel fuel metering device
(with engine version Euro VI)
42 Fuel return bypass
i
Introduction of engine OM 471 and exhaust aftertreatment
>
09/2011
>
93
– This printout will not be recorded by the update service. Status: 09 / 2011 –