KNOWN INFO
TEST OPTIONS
NO
YES
d1. ENGINE OVERHEATS (CONT)
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
Visual Inspection
REASON FOR QUESTION
Perform Cooling System
Troubleshooting (d2. Oil
in Cooling System).
Replace upper coolant hose
(para 6-9), lower coolant hose
(para 6-10), radiator overflow tank
hose(s), or radiator overflow
tank (para 6-3).
If external leaks are present,
upper coolant hose, lower
coolant hose, radiator overflow
tank hose(s), or radiator
overflow tank is faulty.
Does cooling system
leak externally?
TM 9-2320-366-20-1
7.
Coolant level OK.
Radiator core free of debris.
WATER TEMP gage OK.
Radiator OK.
Loss of pressure in cooling
system.
Radiator fan shroud OK.
Water pump OK.
Thermostat OK.
Fan clutch OK.
POSSIBLE PROBLEMS
Faulty upper and lower coolant
hoses.
Faulty radiator cap.
Faulty radiator overflow tank
and hoses.
2-148
Change 2