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 228 of 1760

KNOWN INFO
TEST OPTIONS
Visual Inspection
REASON FOR QUESTION
KNOWN INFO
TEST OPTIONS
Visual Inspection
YES
NO
NO
YES
WARNING
Read WARNING
on following page.
d1. ENGINE OVERHEATS (CONT)
Tighten water pump
hardware or replace water
pump (para 6-12).
Is water pump secure and
free from damage?
If damage is present, water
pump is faulty.
Does thermostat operate
properly?
REASON FOR QUESTION
If thermostat does not operate
properly, thermostat is faulty.
TM 9-2320-365-20-1
Replace thermostat
(para 6-5).
4.
5.
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.
POSSIBLE PROBLEMS
Faulty water pump.
Faulty thermostat.
Faulty fan clutch.
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.
POSSIBLE PROBLEMS
Faulty thermostat.
Faulty fan clutch.
2-136
Change 2


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