Generator Lubrication and Maintenance
Every 500 Service Meter Units
Inspecting Slip Rings-SRCR Only
1. Remove the three lower panels from the rear of the
generator housing.
The color may be shiny copper, straw, chocolate or
black. The important thing is the color must be uniform
to indicate a satisfactory condition.
3. If a ring contains blotches of green, blue or black,
clean the ring with a cleaning solvent that does not leave
an oily film such as Naptha.
WARNING
Do not use gasoline or carbon
tetrachloride.
The
vapors
from
carbon
tetrachloride
can
be
extremely harmful when inhaled.
Either
solvent
will
dissolve
insulation.
Each brush must move freely within its holder and have
enough spring load to prevent brush flotation.
2. Inspect the color of each slip ring.
4. Inspect each ring for pitting, roughness, or eccentric
wear. If any of these conditions are present, contact
your Caterpillar dealer; the rings must be reconditioned.
5. If pitting is found, determine if the cause is (a) or (b):
a. Check the rating on the generator nameplate. The
generator load must be within this rating. Determine if
the generator may have been operated in an overload
condition.
b. Check the brushes for incorrect spring tension.
Using a small spring scale, calibrated in ounces, lift each
spring and check the spring tension for each brush.
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