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 TM 55-1905-221-14-3
6-19.
STARTING MOTORS (ELECTRIC) (Continued).
LOCATION/ITEM
ACTION
REMARKS
OVERHAUL (Cont)
NOTE
Make cut not deeper than necessary.
(1)
Under cut mica 1/32
inch (.793 mm).
(2)
Remove all burrs with
0/2 flintpaper.
TESTING
8. Starting
a. Armature.
Motor
(1)
The armature leads
may become grounded
to the armature
laminations due
to deterioration of
the insulation. This
can be checked with a
110 volt test lamp
and test points,
checking from the
commutator to the
armature laminations.
If the lamp lights, a
ground exists, and
the armature must
be replaced.
(2)
The armature may
become open circuited
at the commutator
riser bars as a
result of long
cranking periods,
which overheat the
unit and cause the
armature leads to
become open circuited.
6-219
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