4-
CHECK SEGMENT
Check Ihal Ihe segment is clean and
If&(!
of foreign
p
a
rli
.
cles.
Stlndard undercut
depth;
0.6
mm
[0.024 11'1.1
M
i
nim
u
m
undarcut depth:
0.2
mm
(0.008
inJ
If the
u
n
d
erc
u
t
depth is less than minimum, correct with
•
hacksaw
blade and smooth out the
edge,
Field
Coil
1 .
CHECK fiELD COil FOA OPEN CIRCUIT
Using
In
Ohmmeter. check
lor continuity between the
field coil
brush leads.
If
there is no
continuity. replace
the
field fr
a
m
e
.
2.
CHECK THAT fiELD COIL IS NOT GROUNDED
Using
Ir'I
Ohmmeter,
Check for
rl()
co
nt
i
n
ui
t
y
between the
field coil
end and field
f,ame.
If
t
h
,r
e i$ continuity. r
e
pl
a
c
e
t
h
e
f
ie
l
d
f
r
e
m
e
.
Magnetic Switch
1.
CHECK PLUNGER
Push in the plunger and
relelSe
il.
Check �t
it
rlilturns
quickly
to its original poSition.
2.
PERFORM PULL·IN COIL OPEN CIRCUIT TEST
Using an ohmmeter, check.
101'
continuity between terminel
50
end
te
r
m
in
a
l
C.
If
thera is no continuity, re
pl
a
c
e
the m&gnetic switch.
