(2) Starter solenoid can be tested for cur-
switch and starting motor, reverse disassem-
bly procedure,
rent draw of both windings in parallel and
g. Adjustments.
draw of hold in winding alone. Disconnect
(1) Subject starter motor to no-load and
b o t h leads from main (larger) terminals.
lock-torque test using equipment shown in
Ground terminal normally connected to starter
to solenoid case with jumper lead. Connect
series with battery with which motor will be
batteries, variable resistance, and ammeter be-
installed, ammeter capable of reading 500 am-
tween solenoid case and smaller terminal. Con-
peres, and low-resistance, high-wattage, vari-
nect voltmeter between smaller terminal and
able resistor. With brake arm disconnected and
case. Slowly increase voltage to 12.0 volts. Am-
with 23.5 volts applied to input terminal, motor
meter should indicate between 27.0 and 30.0
amps. Disconnect jumper lead grounding main
should rotate at 2,500 rpm and should draw
solenoid terminal and readjust resistance to
maximum of 35 amperes. For lock test connect
brake arm to starter pinion and apply 19.1
indicate 4.75 to 5.75 amperes for current draw
volts to input terminal. Motor should draw
265 amperes and scale should indicate 19 ft-lb
of hold-in winding.
of torque.
85
