TM-9-2320-365-20-1

M1078 SERIES, 2 1/2-TON, 4 X 4, LIGHT MEDIUM TACTICAL VEHICLES (LMTV)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 1 OF 5

FEBRUARY 2006
CHANGE 3
TM-9-2320-365-20-1

  TM-9-2320-365-20-1 - Page 230 of 1760

d1. ENGINE OVERHEATS (CONT)
KNOWN INFO
TEST OPTIONS
NO
YES
Visual Inspection
REASON FOR QUESTION
Does fan clutch spin freely
without air applied?
TM 9-2320-365-20-1
6.
Coolant level OK.
Radiator core free of debris.
WATER TEMP gage OK.
Radiator OK.
Upper and lower coolant hoses
OK.
Radiator cap OK.
Radiator overflow tank and
hoses OK.
Cooling system pressure OK.
Radiator fan shroud OK.
Water pump OK.
Thermostat OK.
POSSIBLE PROBLEMS
Faulty fan clutch.
Notify DS Maintenance.
Replace fan clutch
(para 6-14).
If fan clutch spins freely
without air pressure applied,
fan clutch is faulty.
2-138
Change 2


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