TM 9-4310-397-14
4-66. STARTER TESTING AND REPLACEMENT. - Continued
(c)
Make all connections with switch open and carbon pile load turned off. Hook negative battery
connection last to ground on the starter frame.
WARNING
Sparking or current flow can occur if the starter solenoid is frozen. Stop test or injury to
personnel can occur.
(d)
Watch for sparking or current flow in battery as you make all connections.
(e)
If this occurs, stop test. Starter solenoid switch is frozen. Replace starter.
(2)
Test starter.
WARNING
Keep fingers and tools away from opening in housing while testing. The starter drive pinion
will shift strongly as it moves into the cranking position and spins and could cause personal
injury.
CAUTION
Overheating and damage to the starter can occur if starter is operated under a no load test
with the switch closed for longer than 30 second maximum cycles. Allow starter to cool for at
least two minutes.
(a)
Momentarily close switch and observe for the following:
1 High current flow and starter fails to operate (zero rpm), release switch immediately. Internal
mechanical damage is indicated, replace the starter.
2 No current flow and starter fails to operate (zero rpm), release switch immediately. Open circuit is
indicated, replace starter.
3 If there is current flow and starter operates, release switch and proceed with the next step.
(b)
Close switch and observe voltmeter. Adjust carbon pile load to obtain 10 volt reading. Observe and
record ammeter and RPM readings. Release switch.
1 Ammeter reading should be between 125 to 190 amps.
2 Rpm reading should be between 3,000 to 5,600 RPM.
3 Replace starter if readings are not within above ranges.
c.
Installation.
(1)
Position starter (Figure 4-73, 9), and install two hex head screws (10) and new lock washers (11) (item 43,
appendix H).
(2)
Install wire lead (4) and two battery cables (3), lock washer (2), and nut (1). Check wiring diagram (Figure
4-3) and tags before installing wires. Remove tags.
4-172
