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 764 of 1313
STARTER MOTOR INOPERATIVE; NO SOLENOID THUMP - Continued
STEP
12.
IS THERE CONTINUITY BETWEEN CONTACT END OF LEAD 498 AT START SWITCH AND CONTACT
END OF LEAD 498 AT NEUTRAL START SWITCH?
a.
Reconnect lead 498 to neutral start switch.
b.
Disconnect harness connector at protective control box.
T0718DAA
A
B
C
D
E
F
G
499
498
VOM
HARNESS
CONNECTOR
NEUTRAL
START
SWITCH
PROTECTIVE
CONTROL
BOX
Figure 12.
Protective Control Box Wire 499.
c.
Connect multimeter red lead to contact end of lead 499. Refer to point to point schematics.
d.
Connect multimeter black lead to harness connector, pin E (lead 499).
e.
Meter reading should be less than 20 ohms.
CONDITION/INDICATION
IS THERE CONTINUITY BETWEEN CONTACT END OF LEAD 498 AT START SWITCH AND CONTACT END
OF LEAD 498 AT NEUTRAL START SWITCH?
DECISION
NO - Repair wire 499 (Volume 3, WP
0352). Go to Step (15) to verify problem is solved.
YES - Go to Step (13).
TM 9-2320-272-23-1
0088
0088-13
Back to Top
