Mercedes-Benz OM 471 Introduction Into Service Manual page 84

The lubricating oil duct for the exhaust rocker arm spindle (15),
lubricating oil duct for the intake rocker arm spindle (11) and oil
ducts for operation of the engine brake all branch off from the oil
ducts to the cylinder head.
Engine oil is supplied through the lubricating oil duct for the
exhaust rocker arm spindle (15) to the exhaust rocker arm's rocker
arm bearings (17), the exhaust rocker arm with hydro element (18)
and the brake rocker arm (19) as well as the bearings and cams of
the exhaust camshaft (14). The rocker arm bearings for the intake
rocker arms (13) and the bearings and cams on the intake
camshaft (10) are supplied with engine oil via the lubricating oil
duct for the intake rocker arm spindle (11).
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i The engine oil fill level sensor (B605) is used for monitoring
the engine oil level and engine oil temperature in the oil pan.
The engine oil pressure is recorded through the oil pressure sensor
(B604).
The engine oil fill level sensor (B605) and the oil pressure sensor
(B604) are connected to the engine management (MCM) control
unit (A4).
Engine management control unit (MCM),
component description
Oil pressure sensor, description of
components
Component description for engine oil fill
level sensor
Oil separator component description
Component description for turbocharger
Engine oil circuit schematic
Component description for oil pump
Oil/coolant module, component
description
Oil thermostat, component description
Component description for oil/water heat
exchanger
i Introduction of engine OM 471 and exhaust aftertreatment > 09/2011 >
– This printout will not be recorded by the update service. Status: 09 / 2011 –
The oil ducts for operation of the engine brake are used solely to
supply engine oil to the exhaust rocker arm with hydro element
(18). Both oil ducts are separated by two solenoid valves from oil
ducts to the cylinder head and are only filled with oil under
pressure for an activated engine brake.
The oil ducts to the gearwheel drive supply engine oil to the
individual bearings of the gearwheels on the gearwheel drive as
well as the engine>mounted power take>off, insofar as one is
installed.
The turbocharger (6) is supplied with engine oil through the
external oil pressure line.
The engine oil is returned by way of return ducts and return holes
in the camshaft housing, cylinder head and in the crankcase.
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Where there is insufficient engine oil pressure, the oil level is too
low or the engine oil temperature too high, a corresponding
warning is shown in the instrument cluster control unit (A1).
If the engine oil pressure is too low the engine power is reduced.
A4
B604
B605
Functions
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