ENGINE
Characteristic
curve
i
8
s
l00
0
OJ
m
v
1
2
1
0
tc
0
8
E
u
6
E
o
4
0
2
L
c
0
00
J
300
Current
IAI
Fig
EE
24
Characteristic
curve
of
S
114
B
7M
Diagnoses
of
test
1
Low
speed
with
no
load
and
high
current
draw
may
result
from
following
1
Tight
dirty
or
worn
bearings
2
Bent
armature
shaft
3
Shorted
armature
Check
armature
further
4
Grounded
armature
or
field
Remove
copper
connector
Remove
negative
side
brush
and
insulate
it
from
the
commutator
before
inspection
Using
a
circuit
tester
place
one
probe
on
the
insulated
terminal
and
the
other
on
the
rear
cover
If
the
tester
indicates
conduction
remove
the
other
brush
and
check
field
and
armature
separately
to
determine
whether
the
field
is
grounded
or
armature
is
grounded
2
Failure
to
operate
with
high
current
draw
may
result
from
following
I
Grounded
or
open
field
coil
Inspect
the
connection
and
check
the
circuit
by
the
use
of
a
circuit
tester
2
The
armature
coil
does
not
operate
Inspect
the
commutator
for
excessive
damage
due
to
buring
In
this
case
arc
may
occur
on
defective
commu
tator
during
operating
the
motor
with
no
load
3
Burned
out
commutator
bar
Weak
brush
spring
tension
broken
brush
spring
rubber
brush
thrust
out
of
mica
in
the
commutator
or
a
loose
EE
10
contact
brush
and
commutator
would
cause
burning
of
the
commutator
bar
3
Low
torque
low
current
draw
or
low
no
load
speed
causes
high
internal
resistance
due
to
loose
connections
defective
leads
dirty
commutator
and
causes
listed
on
item
2
3
4
High
no
load
speed
with
low
developed
torque
causes
grounded
field
coil
Replace
the
field
coil
and
check
for
improvement
in
performance
Magnetic
switch
assembly
test
SWITCH
STARTER
MOTOR
61
1u
i
T
0
0118
to
0
0591
n
Fig
EE
25
Circuit
of
magnetic
switch
assembly
test
When
the
starting
motor
is
checked
completely
check
the
magnetic
switch
assembly
Connect
jumper
cables
between
the
negative
battery
terminal
and
the
starting
motor
lM
terminal
the
positive
battery
terminal
and
the
starting
motor
S
terminal
connecting
switch
in
series
as
shown
in
Figure
EE
25
With
the
ignition
switch
on
measure
the
gap
I
between
the
pinion
front
edge
and
the
pinion
stopper
and
adjust
by
changing
the
plunger
L
dimension
if
nec
essary
Gap
l
0
3
to
1
5
mm
0
0118
to
0
0591
in
l
Fig
EE
26
Measurement
of
gap
L
