MBE 900 ENGINE 2007 OPERATOR'S GUIDE ENGINE SYSTEMS Air System The engine systems are the following: 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.
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. 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. 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 Cooling 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. 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. 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) 59 DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION