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 or 172 kPa maximum). Remove all
greasy dirt with a cloth.
Item 27
Item 28
is no appreciable loss of power, no vibration or
Lubricate all of the power take-off bearings with an all
unusual noise and no oil leaks, only a periodic
purpose grease such as Shell Alvania No. 2, or
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