TM 9-2320-366-34-1
2-70
NO
YES
Is cylinder head and
engine block free from
leaks and damage?
3.
Faulty cylinder head
and/or engine block.
Coolant may be in leaking
into cylinders if there is
damage to either the
cylinder head or engine
block and can cause engine
to overheat.
Fault corrected.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
Visual inspection
REASON FOR QUESTION
Engine oil level OK.
Water temperature gage OK.
Coolant level OK.
Radiator core free of debris.
Upper and lower radiator
hoses OK.
Radiator cap OK.
Radiator overflow tank and
hoses OK.
Radiator OK.
Fan shroud OK.
Charge air cooler OK.
Fuel setting OK.
Injector timing OK.
If engine block is cracked
replace engine assembly (para 3-3).
If cylinder head is cracked
replace cylinder head (para 3-6).
b1. ENGINE OVERHEATS (CONT)
