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 756 of 1313
STARTER MOTOR INOPERATIVE; NO SOLENOID THUMP - Continued
STEP
4.
IS THERE BATTERY VOLTAGE TO PIN B OF THE BATTERY SWITCH?
a.
Reconnect lead 81A to battery switch pin A.
b.
Disconnect lead 459 (pin B) from the battery switch.
T0709DAA
BATTERY
SWITCH
VOM
TO PROTECTIVE
CONTROL BOX
FROM
STARTER
A
C
D
B
459
569A
569
81A
81
Figure 4.
Battery Switch Test.
c.
Connect multimeter red lead to contact end of pin B. Refer to point to point schematics.
d.
Connect multimeter black lead to a known good ground.
e.
Turn battery switch to ON position.
f.
Meter reading should be between 22 and 26 VDC.
CONDITION/INDICATION
IS THERE BATTERY VOLTAGE TO PIN B OF THE BATTERY SWITCH?
DECISION
NO - Replace battery switch (Volume 2, WP
0307). Go to Step (15) to verify problem is solved.
YES - Go to Step (5).
TM 9-2320-272-23-1
0088
0088-5
Back to Top
