TM 9-2320-260-10
(4) If engine overheating occurs:
CAUTION
Do not raise vehicle hood. Engine will cool faster at idle with hood
closed.
(a) Park vehicle, allowing engine to idle.
NOTE
Radiator fan and engine coolant will begin lowering engine
temperature a few minutes after vehicle stops.
(b) Observe temperature gage (1) for
indication that engine is steadily cooling.
(c) Shut off vehicle engine when
engine temperature reaches normal oper-
ating temperatures 175° F to 195° F (79° C to
91° C) as indicated by temperature gage (1).
(d) Perform troubleshooting pro-
cedures as listed in table 3-1, after engine
has cooled to normal operating tempera-
tures 175° F to 195° F (79° C to 91° C).
WARNING
Severe burns can result from opening surge tank filler cap (2) while
engine is running or before engine temperature has cooled below
175° F (79° C) as indicated by temperature gage (1).
(e) Place a thick cloth over surge
tank filler cap (2). Carefully turn cap (2)
counterclockwise to its first stop to allow
pressure to escape.
(f) Remove cap when cooling system
pressure is vented and check coolant level.
NOTE
Surge tank should be three-
quarters full.
(g) Start vehicle engine and add
engine coolant as required.
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