ENGINE
ELECI
RlCAL
SYSTEM
97
No
Load
Lock
Torque
Test
1
Connect
the
starter
motor
in
series
with
a
12
volt
battery
and
antmeter
as
shown
in
Figure
19
The
antmeter
should
be
capable
of
mdIcatIng
1
000
amps
@
Switch
Voltmeter
Ammeter
2
Use
torque
testlng
equipment
to
determine
the
torque
the
motor
develops
3
Connect
a
voltmeter
and
a
vanable
resistor
WhICh
IS
used
to
regulate
the
voltage
Into
the
circwt
4
Close
the
sWitch
and
regulate
the
voltage
as
reqUIred
Figure
20
proVIdes
power
voltage
amperage
and
torque
mformatIon
that
1f
fol
lowed
will
mdIcate
the
condItion
of
the
starter
motor
Power
kw
Voltage
v
@
Test
Diagnosis
1
Low
speed
with
high
current
draw
might
re
sult
from
tIght
dirty
or
worn
bearings
bent
armatlIre
shaft
loose
field
call
or
a
shorted
armatlIre
2
Fatlure
to
operate
With
htgh
current
draw
may
result
from
a
gromlded
or
open
field
coil
a
defectIve
armature
coll
or
a
burned
out
com
mutator
bar
3
Low
torque
low
current
draw
and
low
speed
would
be
caused
by
hIgh
Internal
reSIStance
due
to
loose
connectIons
dirty
commutator
defec
tIve
leads
and
a
burned
out
commutator
bar
4
HIgh
speed
With
low
torque
would
be
caused
by
a
grounded
field
coll
Magnetic
Switch
Assembly
Test
H
the
above
tests
are
satIsfactory
check
the
magnetIc
SWitch
assembly
as
follows
1
Connect
Jumper
cables
between
the
negative
battery
tennmal
and
the
starter
motor
M
term
inal
as
shown
In
Figure
21
Also
connect
the
positIve
battery
terminal
to
the
S
terminal
and
place
a
SWitch
m
senes
in
the
CIrCuit
@
Ignition
switch
9
I
i
j
Battery
Starter
motor
rr
2
Close
the
SWitch
and
measure
the
dimension
given
m
Figure
22
The
dimensIon
should
be
as
specIfied
o
0591m
15mm
