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 755 of 1313
STARTER MOTOR INOPERATIVE; NO SOLENOID THUMP - Continued
STEP
3.
IS THERE BATTERY VOLTAGE TO PIN A OF THE BATTERY SWITCH?
a.
Disconnect lead 81A (pin A) from the battery switch.
b.
Set up multimeter to measure VDC.
T0708DAA
BATTERY
SWITCH
VOM
TO PROTECTIVE
CONTROL BOX
FROM
STARTER
A
C
D
B
459
569A
569
81A
81
Figure 3.
Battery Switch Wire 81A.
c.
Connect multimeter red lead to disconnected lead 81A. Refer to point to point schematics.
d.
Connect multimeter black lead to a known good ground.
e.
Meter reading should be between 22 and 26 VDC.
CONDITION/INDICATION
IS THERE BATTERY VOLTAGE TO PIN A OF THE BATTERY SWITCH?
DECISION
NO - Repair wire 81A/81 (Volume 3, WP
0352). Go to Step (15) to verify problem is solved.
YES - Go to Step (4).
TM 9-2320-272-23-1
0088
0088-4
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