TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 311 of 1417
NG80: STARTER CIRCUIT TESTS - Continued
STEP
9.
Perform starter voltage drop.
a.
Dial 68 into TEST SELECT and press TEST.
Table
4.
Starter Motor Voltage Test.
Test NO.
Test
68
Starter Motor Voltage
b.
Crank engine and observe displayed voltage.
Table
5.
Starter Voltage.
Vehicle
Starter Solenoid Voltage
M939/A1
17 Volts
M939A2
18.5 Volts
CONDITION/INDICATION
Is voltage above minimum starter solenoid voltage?
DECISION
YES - Go to Step (10).
NO - Go to Step (11).
TM 9-2320-272-23-2
0202
0202-6
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