Pump Module, Component Description - Mercedes-Benz OM 471 Introduction Into Service Manual

GF14.40>W>3003H
ENGINE 471.9 in MODEL 963, 964
Location
Shown on model 963 with code (M5Z)
Engine version Euro VI
1 Pump module
2 EATU
16 AdBlue" tank
The pump module (1) which contains the
SCR control unit (A58) and SCR delivery
pump (M25) is fastened to a bracket on the
inside of the right longitudinal frame
member behind the EATU (2).
Task
The pump module (1) sucks in AdBlue" from the AdBlue"
container (16), filters it and pumps it to the AdBlue" metering
device (A67). The SCR control unit (A58) calculates the injection
period and the injection quantity.
Design
3 Electronics housing
4 Connecting body
5 Filter housing
6 Electrical connection
(communication to AdBlue"
metering device)
7 Electrical connection
(communication to exhaust
aftertreatment (ACM) control unit)
8 AdBlue" inlet
9 Intake filter
(mesh size 190 om)
10 AdBlue outlet
11 Vent valves
12 Coolant inlet
13 Coolant outlet
14 Pressure limiting valve
15 Main filter
(mesh size 20 to 30 om)
A58 SCR control unit
M25 SCR delivery pump
i Introduction of engine OM 471 and exhaust aftertreatment > 09/2011 >

Pump module, component description

– This printout will not be recorded by the update service. Status: 09 / 2011 –
System components
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