COMPONENT SERVICE-STARTING
SYSTEM
Pm&in Test of Magnetic Switch
1. Disconnect field coil wire from M-terminal of magnetic
switch.
2. Connect a 12 V battery between S-terminal and M-
terminal. (6EL004)
Caution
This test must be performed quickly (in less than 10 seconds)
to prevent coil from burning.
3. If pinion moves out, then pull-in coil is good. If it doesn’t,
replace magnetic switch.
Hold-m Test of Magnetic Switch
1. Disconnect field coil wire from M-terminal of magnetic
switch.
2. Connect a .12 V battery between S-terminal and body.
(6EL005)
Caution
This test must be performed quickly (in less than 10 seconds)
to prevent coil from burning.
3. If pmion remains out, everything is in order,, If pinion
moves in, hold-in circuit is open. Replace magnetic
switch.
Return Test of Magnetic Switch
1. Disconnect field coil wire from “M” terminal ocf magnetic
switch.
2. Connect a 12 V battery between M-terminal and body.
(6EL006)
Caution
This test must be performed quickly (in less than ‘10 seconds)
to prevent coil from burning.
3. Pull pinion out and release. If pinion quickly returns to
its original position, everything is in order. If it doesn’t
replace magnetic switch.,
Free Running Test
1. Place starter motor in a vise equipped with soft jaws and
connect a fully-charged, 12 volt battery to starter motor
as follows:
2. Connect a test ammeter (100 amperes scale)’ and carbon
pile rheostat in series with battery positive, post and
starter motor terminal.
3. Connect a voltmeter (15 volt scale) across starter motor.
4. Rotate carbon pile to full-resistance position. (6EL071)
12 V battery
12V battery
Field coil
b
S
p @”
:8
Starter
wire
motor
6E LOO5
12 V battery
LOO6
Carbon pile rheostat
r 1
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