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c. Touch the black
tester
lead to t he frame
and field
assembly.
The meter indicator
should not move
.
If the indicator moves,
fi
eld winding is grounded and must be
replaced
.
11. Inspect the ground of the ground
brushes
using
a mu ltitester and
the following
pro-
cedure:
a. Set the selector
on
the X1 K position; then
touch
the
leads and
zero
the meter.
b.
Touch the black
tester
lead to a ground
brush.
c. Touch
the red tester lead to the
brush
holder. The meter indicator
should move
to
the
right. If
the indicator does not move
to the
right
,
either solder
the ground-brush
wire to the ho lder or replace
the brush
assemb
ly.
III
NOTE: Use only a rosin-core solder when
soldering the brush connections.
d.
Perform this
test
on the other
ground
brush.
12. Inspec
t
the
armature for shorting
.
Use a
"growler"
and the fo
ll
owing procedure:
a. Place the
armatu re
in
the
"grow
ler"
.
b.
Wh ile ho lding a metal strip over the ar-
mature, rotate the armature an
ent
ire
revolution.
If
t he metal strip vibrates
at
any point on the
armat
ure, the
armatu
re is
shorted and
must
be
replaced.
Fig.
5·22
0725·653
ASSEMBLING
1.
In turn on the armature shaft, place the
was hers, front cover, and pinion
assemb
ly.
III
NOTE:
Make sure
the fiber washer is posi-
tioned
next to
the
cover.
2.
Place the
spring and stopper into position;
then
slide the
stopper down the shaft
and
in-
sta
ll
the
retaining ring.
Fig. 5·23
o
o
E542
3.
Sli
de t he
armat
ure assemb ly into
th
e yoke;
t
hen compress the brushes and sl ide brush
holder assembly onto
t
he commutator
end
of
the
armature.
4.
Place
th
e rear cove
r
into
position and sec ure
w ith the washe
r
and
E-ring
.
Fig.
5·24
8270
111
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