Preventive
Maintenance
DETROIT DIESEL
mounted breather pads at time of engine overhaul, or
Reinstall the screen and gasket assemblies with the
sooner if excessive crankcase pressure is observed.
screen side of the assemblies toward the blower.
Inspect for evidence of blower seal leakage.
Remove the crankcase breather from the engine and
wash the steel mesh pad (element) in fuel oil and dry
it with compressed air. Reinstall the breather
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assembly.
The electrical starting motor is lubricated at the time
Clean the breather cap, mounted on the valve rocker
of original assembly. Oil can be added to the oil wicks,
cover, in clean fuel oil every time the engine oil is
which project through each bushing and contact the
changed.
armature shaft, by removing the pipe plugs on the
outside of the motor. The wicks should be lubricated
whenever the starting motor is taken off the engine or
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disassembled.
Inspect the blower screen and gasket assemblies every
The Sprag overrunning clutch drive mechanism should
1,000 hours or 30,000 miles and, if necessary, clean the
be lubricated with a few drops of light engine oil
screens in fuel oil and dry them with compressed air.
whenever the starting motor is overhauled.
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Lubricate the alternator bearings or bushings with 5 or
6 drops of engine oil at the hinge cap oiler every 200
hours or 6,000 miles.
Some alternators have a built-in supply of grease,
while others use sealed bearings. In these latter two
cases, additional lubrication is not necessary.
The slip rings and brushes of an alternator can be
inspected through the end frame assembly. If the slip
rings are dirty, they should be cleaned with 400 grain
or finer polishing cloth. Never use emery cloth to clean
slip rings. Hold the polishing cloth against the slip
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rings with the alternator in operation and blow away
Item 14
Item 13
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