MBE4000 APPLICATION AND INSTALLATION
11.1.1
THREE-POINT MOUNTING
Three-point mounting is based on the principle that three points de
fi
ne a plane and therefore
engine block and driven machinery twisting will not occur. Three point mounting is recommended
for on-highway and rough terrain mobile applications, but it can also readily be used in stationary
applications. It is accomplished with one mounting point at the front and two at the rear. The front
mount provides support vertically and transversely but will not restrain torsionally or axially, so
within certain limits no twisting loads can be induced. Some MBE4000 engine
fl
ywheel housings
have mounting pads. At the rear of the engine a bracket is attached to each side of the
fl
ywheel
housing with the driven mechanism
fl
ange mounted to the engine. A standard design front mount
provides two attaching points which are close enough together and are considered a single point.
See Figure 11-1 for a three–point mounting with rear brackets and the bending moment less than
1000 ft lb at the rear face of the cylinder block (RFB).
Figure 11-1
Three–point Mounting with Rear Bracket
The rear mounts should restrain motion in all six degrees of freedom and provide for the
necessary torque reaction. Isolation mounts can be used under both front and rear mounting
brackets if desired.
All information subject to change without notice.
(Rev. 03/06)
11-3
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION