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 427 of 1313
ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE - Continued
STEP
1.
DOES COOLANT CIRCULATE THROUGH SURGE TANK WHEN ENGINE TEMPERATURE IS BELOW
175°F (79°C)?
WARNING
Extreme care should be taken when removing surge tank filler cap if temperature gauge
reads below 175°F (79°C). Steam or hot coolant under pressure may cause injury.
a.
Remove surge tank cap.
T1056DAA
Surge Tank
Figure 1.
Surge Tank.
b.
Start engine (TM 9-2320-272-10).
c.
Visually inspect coolant for circulation.
d.
Stop engine.
CONDITION/INDICATION
DOES COOLANT CIRCULATE THROUGH SURGE TANK WHEN ENGINE TEMPERATURE IS BELOW 175°F
(79°C)?
TM 9-2320-272-23-1
0027
0027-2
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