is no appreciable loss of power, no vibration or unusual noise
and no oil leaks, only a periodic inspection is necessary. When
service is required, contact an authorized Detroit Diesel Allison
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.
The following greases, or their equivalents, are recommended:
Keystone 44 H
Keystone Lubrication Co.
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.
Lubricate all of the power take-off bearings with an all purpose
grease such as Shell Alvania No. 2, or