KNOWN INFO
TEST OPTIONS
NO
YES
2.
Faulty upper and lower coolant
hoses.
Faulty radiator cap.
Faulty radiator overflow tank
and hoses.
Loss of pressure in cooling
system.
Faulty radiator fan shroud.
Faulty charge air cooler.
Faulty water pump.
Faulty thermostat.
Faulty fan clutch.
POSSIBLE PROBLEMS
Coolant level OK.
Radiator core free of debris.
WATER TEMP gage OK.
Radiator OK.
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
Visual Inspection
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
Does cooling system
maintain pressure?
Go to step 8 of this fault.
d1. ENGINE OVERHEATS (CONT)
TM 9-2320-365-20-1
2-132 Change 1
