DETROIT DIESEL
Preventive Maintenance
inspection is necessary. When service is required,
contact an authorized Detroit Diesel Allison Service
Outlet.
Item 27
The power generator requires lubrication at only one
point the ball bearing in the end frame.
If the bearing is oil lubricated, check the oil level in the
sight gage every 300 hours; change the oil every six
months. Use the same grade of oil as specified for the
engine. Maintain the oil level to the line in the sight
gage. Do not overfill After adding oil, recheck the oil
level after running the generator for several minutes.
If the bearing is grease lubricated, a new generator has
sufficient grease for three years of normal service.
Thereafter, it should be lubricated at one year intervals.
To lubricate the bearing, remove the filler and relief
plugs on the side and the bottom of the bearing
reservoir. Add grease until new grease appears at the
relief plug opening. Run the generator a few minutes to
vent the excess grease; then reinstall the plugs.
Item 25
The following greases, or their equivalents, are
recommended:
Keystone 44H......................Keystone Lubrication Co.
BRB Lifetime........................ Socony Vacuum Oil Co.
NY and NJ F926 or F927..... NY and NJ Lubricant Co.
After 100 hours on new brushes, or brushes in
generators that have not been in use over a long period,
remove the end frame covers and inspect the brushes,
commutator and collector rings.
If there is no
appreciable wear on the brushes, the inspection interval
may be extended until the most practicable period has
been established (not to exceed six months). To
prevent damage to the commutator or the collector
rings, do not permit the brushes to become shorter than
3/4 inch.
Keep the generator clean inside and out. Before
removing the end frame covers, wipe off the loose dirt.
The loose dirt and dust may be blown out with low
pressure air (25 psi maximum). Remove all greasy dirt
with a cloth.
Item 27
Item 28
Lubricate all of the power take-off bearings with an all
is no appreciable loss of power, no vibration or unusual
purpose grease such as Shell Alvania No. 2, or
noise and no oil leaks, only a periodic
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