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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).
2
KNOWN INFO
TEST OPTIONS
Indicated engine water
Visual inspection.
Is air flow across radiator free
temperature is continuously
REASON FOR QUESTION
from obstructions/
above normal 180 to
If air flow restricted, engine will
restrictions?
210 degrees F operating range.
overheat.
Engine coolant level OK.
POSSIBLE PROBLEMS
Air flow across radiator
inadequate.
Fan drive belt loose or faulty.
Radiator cap malfunctioning.
Radiator hose(s) collapsed,
ruptured, leaking.
Thermostat faulty.
Water pump faulty.
Remove obstructions/
NO
Cooling passages in cooling
restrictions.
system blocked.
YES
3
KNOWN INFO
TEST OPTIONS
Indicated engine water
Visual inspection.
Is fan drive belt tightened
temperature is continuously
REASON FOR QUESTION
properly and free from signs
above normal 180 to
If fan drive belt is loose or faulty,
of wear?
210 degrees F operating range.
engine will run hot.
Engine coolant level OK.
Air flow across radiator adequate.
POSSIBLE PROBLEMS
Fan drive belt loose or faulty.
Radiator cap malfunctioning.
Radiator hose(s) collapsed,
ruptured, leaking.
Thermostat faulty.
Water pump faulty.
Cooling passages in cooling
Tighten loose belt
NO
system blocked.
or replace worn belt
(Para 7-9).
YES
2-684
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