5-49. STARTER ASSEMBLY REPAIR (CONT).
Check field coil for grounds and opens as follows:
Ground cheek cannot be made if ground connection cannot be disconnected.
Grounds. Disconnect field coil ground connection. Using test lamp, connect one test prod to field
frame and other to field connector. If lamp lights, field coils are grounded and must be repaired
Opens. Connect test lamp prods to ends of field coils. If lamp does not light, field coils are open.
Perform starter solenoid ammeter test.
Connect positive battery cable to one
side of the ammeter and the negative
battery cable to solenoid ground.
Ensure switch is open prior to connecting
to starter solenoid: Electrical shock may
result solenoid is energized while making
final battery connection.
To prevent overheating, do not leave pull-
in winding energized more than 15
seconds. Current draw will decrease as
winding temperature increases.
Connect switch leads to ammeter and
solenoid switch terminal (S).
Connect potentiometer across positive and negative battery terminals.
Close switch to operate starter and adjust potentiometer until voltmeter indicates 24 Vdc.
Observe ammeter reading. If reading is below or above 105 to 115 amps, replace starter solenoid.