MBE4000 APPLICATION AND INSTALLATION
An internal tooth gear pump is mounted to the bottom front of the engine block and direct driven
by the crankshaft at 1.49 times engine speed. The location of the oil sump pick-up tube varies
with oil pan choice.
Oil leaving the pump is routed through the full
fl
ow
fi
lters to the oil cooler and bypass passage,
then into the main oil gallery in the cylinder block. From there, oil is distributed to the crankshaft,
rods and pistons, camshaft bearing saddles and caps, the accessory drive, and the water pump
drive. Oil spray nozzles are installed in the block, which provide a continuous spray of oil to the
underside of the pistons. From the main gallery, oil is routed to passages in the cylinder head,
which deliver oil to the valve train components, and injector followers. Drains from the head
return oil to the pan. Oil for gear train components at the front of the engine is fed through
drilled holes out of the main gallery. The shafts and bearings of the accessory drive are fed
through the gallery (see Figure 9-2).
Figure 9-2
Typical MBE4000 Lubrication System
There are a wide variety of options for location of gage,
fi
ll and breather components.
All information subject to change without notice.
(Rev. 03/06)
9-5
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION