Crankcase From Below, Shown With Oil Ducts - Mercedes-Benz OM 471 Introduction Into Service Manual

As>built configurations
Crankcase from below, shown with oil
ducts
22 Oil return duct to oil/coolant module
23 Oil return ducts to oil pan
x Direction of travel
Crankcase from below, shown with oil
ducts
24 Bores for oil supply to the oil spray
nozzles
25 Bores for oil supply to the main
bearing, crankshaft and connecting
rod bearing
x Direction of travel
The crankcase consists of cast iron and is characterized by the
following features:
a high rigidity and low noise emissions due to the vertical
f
and horizontal reinforcements, as well as due to the design
form of the oil return ducts
f a compact design due to the low distance from the cylinder
The crankcase also has 1.5 mm recesses at the sealing surface to
the cylinder head for all coolant overflow holes to the cylinder
head (6) and for all oil overflow holes to the cylinder head (20).
These serve to receive the respective elastomer elements in the
cylinder head gasket.
20
– This printout will not be recorded by the update service. Status: 09 / 2011 –
The following major assemblies and components are located on
the crankcase:
Right>hand side
f Turbocharger
f Starter
f Oil separator for crankcase ventilation system
Left>hand side
f Oil/coolant module
f Engine management (MCM) control unit
f Fuel filter module
f Fuel high pressure pump
f Compressor, power steering pump
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