TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 740 of 1313
STARTER MOTOR INOPERATIVE - Continued
STEP
2.
IS THERE BATTERY VOLTAGE AT THE STARTER?
a.
Verify battery switch is set to ON position.
b.
Set up multimeter to measure VDC.
T0924DAA
STARTER
SOLENOID
STARTER
MOTOR
Figure 2.
Battery/Solenoid Voltage Test.
c.
Connect multimeter red lead to starter, terminal 6. Refer to point to point schematics.
d.
Connect multimeter black lead to ground.
e.
Turn starter switch to START.
f.
Meter reading should be between 22 and 26 VDC.
CONDITION/INDICATION
IS THERE BATTERY VOLTAGE AT THE STARTER?
DECISION
NO - Perform Starter Motor Inoperative, No Solenoid Thump troubleshooting (WP
0088).
YES - Replace starter motor and solenoid (Volume 2, WP
0303). Go to Step (3) to verify problem is solved.
TM 9-2320-272-23-1
0086
0086-3
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