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Page Title:
ENGINE WATER TEMPERATURE ABOVE NORMAL - continued |
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 TM 10-3930-673-20-1
14. ENGINE WATER TEMPERATURE ABOVE NORMAL (CONT).
4
KNOWN INFO
TEST OPTIONS
Indicated engine water
Visual inspection.
Is radiator cap
temperature is continuously
REASON FOR QUESTION
(normally: 15 PSI) functioning
above normal 180 to
If radiator cap is malfunctioning,
properly?
210 degrees F operating range.
engine will run hot.
Engine coolant level OK.
Air flow across radiator adequate.
Fan drive belt OK.
POSSIBLE PROBLEMS
Radiator cap malfunctioning.
Radiator hose(s) collapsed,
ruptured, leaking.
Thermostat faulty.
Water pump faulty.
Cooling passages in cooling
Test, clean and/or
NO
system blocked.
replace radiator
cap (Para 7-2).
YES
5
KNOWN INFO
TEST OPTIONS
Indicated engine water
Visual inspection.
Are upper and lower radiator
temperature is continuously
REASON FOR QUESTION
hoses free from collapsed
above normal 180 to
If radiator hose(s) collapsed,
sections, ruptures, and/or
210 degrees F operating range.
ruptured, leaking, engine will
Engine coolant level OK.
leaks?
overheat.
Air flow across radiator adequate.
Fan drive belt OK.
Radiator cap OK.
POSSIBLE PROBLEMS
Radiator hose(s) collapsed,
ruptured, leaking.
Thermostat faulty.
Water pump faulty.
Cooling passages in cooling
Replace faulty
NO
system blocked.
radiator hose(s)
(Para 7-4).
YES
2-686
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