DETROIT DIESEL
Preventive Maintenance
mounted breather pads at time of engine overhaul, or sooner if
excessive crankcase pressure is observed. 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
assembly.
Clean the breather cap, mounted on the valve rocker cover, in clean
fuel oil every time the engine oil is changed.
Item 13
Inspect the blower screen and gasket assemblies every1,000 hours
or 30,000 miles and, if necessary, clean the screens in fuel oil and
dry them with compressed air. Reinstall the screen and gasket
assemblies with the screen side of the assemblies toward the
Item 12
blower. Inspect for evidence of blower seal leakage.
Item 14
The electrical starting motor is lubricated at the time of original
assembly. Oil can be added to the oil wicks, which project through
each bushing and contact the 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 disassembled.
The Sprag overrunning clutch drive mechanism should be lubricated
with a few drops of light engine oil whenever the starting motor is
overhauled.
Item 15
Lubricate the alternator bearings or bushings with 5 or 6 drops of
engine oil at the hinge cap oiler every 200 hours or 1,000 miles.
Some alternators have a built-in supply of grease, while others use
Item 13
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 rings with the
alternator in operation and blow away
Item 14
Page 60
