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REPAIR INSTRUCTIONS
ULTRASONIC CLEANING METHOD
Ultrasonic cleaning is the preferred method for
cleaning the fuel injector nozzles. Ultrasonic
cleaning units, such as J 29653-A, use sound
waves or mechanical vibrations approximately
55,000 cycles per second above human hearing
range. The sound waves are generated by the
transducer, which changes high-frequency
electrical energy into mechanical energy.
BRASS BRUSH/WIRE WHEEL METHOD
Cleaning the fuel injector nozzles with a brass
brush or wire wheel may be acceptable under
some conditions, but it is not recommended.
The nozzles will be damaged if a steel wire wheel
is used for cleaning. Damage can also occur if an
improper size brass-wire wheel and/or improper
speed is used.
ENGINE REASSEMBLY
General Instructions
This section includes step-by-step procedures for
complete reassembly of the MACK E-Tech™
engine. Major components that were inspected
and overhauled or replaced under the respective
bench procedure sections of this manual are
reinstalled here as assemblies.
Failure to follow the sequence of operations listed
may result in damage to components or personal
injury.
After cleaning the components, properly store
them where they will remain clean until needed
for reassembly.
When required for installing components, be sure
to use clean engine oil of the approved type.
Crankshaft Installation
[212 HP]
1. Be sure that the crankshaft and the
crankcase area of the cylinder block are
clean.
2. Thoroughly clean each main bearing bore
and the back of each bearing insert before
installation. The inserts must be installed
dry.
The hole in the insert must line up with the drilled
hole in the block or the bearing will fail due to lack
of lubrication. The upper bearing insert is
stamped on the back with the word “UPPER.”
3. Place the upper half of the bearing insert (2)
in the cylinder block main bearing bore,
making sure that the locating tab (1) fits into
the notch in the bore (Figure 232).
5_106_00.bk Page 222 Friday, August 4, 2000 11:17 AM
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