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 430 of 1313
ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE - Continued
c.
Place battery switch to ON position.
d.
Have assistant momentarily ground disconnected circuit 33 wire.
e.
Observe coolant temperature gauge for movement.
CONDITION/INDICATION
DOES COOLANT TEMPERATURE GAUGE OPERATE PROPERLY?
DECISION
YES - Replace coolant temperature sending unit (Volume 2, WP
0334). Go to Step (4) to verify problem is
solved.
NO - Perform Temperature Gauge Inoperative (Coolant) troubleshooting (WP
0106).
STEP
4.
IS YOUR ORIGINAL PROBLEM STILL PRESENT?
a.
Ensure vehicle is returned to normal operating condition.
b.
Check to see if your original problem still exists.
CONDITION/INDICATION
IS YOUR ORIGINAL PROBLEM STILL PRESENT?
DECISION
YES - Notify supervisor.
NO - Problem fixed.
END OF WORK PACKAGE
TM 9-2320-272-23-1
0027
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