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 TM 55-1905-221-14-3
6-19.
STARTING MOTORS (ELECTRIC) (Continued).
LOCATION/ITEM
ACTION
REMARKS
TESTING (Cont)
adjacent bars. If
short circuit still
exists, replace
armature.
b. Field coils.
(1)
The fields may become
grounded to the frame
due to deterioration
of the insulation.
This can be checked
with a 110 volt
test lamp and test
points, checking from
the field coil
terminals to the
frame. If the lamp
lights, a ground
exists, and the
defective field coil
must be replaced.
(2)
An open circuited
field coil can be
checked with a test
lamp and test
points, checking the
two extremities of
each field coil. If
the test lamp
fails to light, an
open circuit exists
and the defective
field coil must
be replaced.
6-221
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