Engine Systems; Fuel System; Lubrication System; Air System - Detroit Diesel MBE 900 Operator's Manual

ENGINE SYSTEMS

The engine systems are the following:

Fuel System

The fuel system consists of Motor
Control Module (MCM), fuel
injectors, Electronic Unit Pumps
(EUP), fuel pump, a fuel heat
exchanger, a multi-functional
fuel filter containing primary and
secondary filtration with a fuel
priming valve and a water separator,
and the necessary connecting fuel
lines.
The gear-type fuel pump is bolted to
the front of the cylinder block. The
pump is driven from the forward end
of the camshaft.

Lubrication System

The lubricating oil system consists
of an oil pump, pressure regulator,
pressure relief valve, oil filters, oil
filter adaptor, oil cooler, oil level
dipstick, oil pan and ventilation.
There is a force-feed lubricating oil
circuit supplied by a rotary oil pump.
This pump is in the front cover and
is drive by a gear on the front of the
crankshaft.
The oil cooler is located on the right
side front of the cylinder block near
the oil filter.
All information subject to change without notice. (Rev. 04/08)
DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION
MBE 900 ENGINE 2007 OPERATOR'S GUIDE

Air System

The outside air drawn into the
engine passes through the air filter
and is pulled into the turbocharger
and compressed. It then moves to
the air-to-air charge cooler (heat
exchanger) and is cooled. Next it
flows to the intake manifold and into
the cylinders, where it mixes with
atomized fuel from the injectors.
For optimum protection of the
engine from dust and other airborne
contaminants, service the dry type
air cleaners used when the maximum
allowable air restriction has been
reached, or annually, whichever
occurs first.

Cooling System

The water pump is mounted on the
front of the cylinder block and is belt
driven by the crankshaft pulley. This
system has a centrifugal type water
pump to circulate coolant within
the engine. Two full-blocking type
thermostats located in a housing
attached to the front of the cylinder
block.
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