TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Starting Motor (013-020)
Section 13 - Electrical Equipment - Group 13
Page 13-35
Test (013-020-012)
Check for system voltage at the ``M'' terminal of the starting
motor while the starter switch is energized.
System Voltage: Starting motor is malfunctioning or
not adequately grounded and must be repaired or
replaced.
No Voltage: Starting motor solenoid is malfunction-
ing and must be replaced.
If the starting motor solenoid makes a sound, turn the
switch off, and attempt to bar the crankshaft in both
directions.
Bar the crankshaft as follows:
1. Direction of engine rotation
2. Direction opposite engine rotation
3. Direction of engine rotation.
If the crankshaft will bar over, attempt to start the engine.
If the starting motor cranks the engine, check the starting
motor pinion gear and flywheel ring gear for damage.
Engine Cranking Speed Too Slow
Make sure the wiring connections are clean, tight and not
damaged.
Check the battery voltage. Refer to Procedure 013-007.
L-1293
