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TM 9-2320-364-20-2
2-1072
1. ENGINE OVERHEATS (WATER TEMP GAGE CONTINUOUSLY READS OVER
230F (110C)).
INITIAL SETUP
1.
Tighten clamps or
replace damaged
hoses or clamps
(Para 6-8).
Verify repair, go to
Step 11 of this Fault.
START
YES
NO
Nothing.
Leaky coolant hoses or loose
clamps.
Radiator cooling fins clogged.
Fan does not operate at low
speed.
Fan does not operate at high
speed.
Water temperature gage faulty.
Cooling assembly faulty.
Thermostat(s) faulty.
Water temperature switch faulty.
Water temperature sensor
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
Leaking or damaged coolant
hoses may cause low coolant
level and lead to engine
overheating.
2-17. COOLING SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
Adapter, Radiator (Item 2, Appendix G)
STE/ICE-R (Item 3, Appendix G)
Multimeter, (Item 44, Appendix G)
Tester, Pressure, Radiator (Item 71, Appendix G)
Personnel Required
Two
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Right side noise panel removed, (Para 17-26)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
TM 750-254
WARNING
Are coolant hoses and
clamps in good condition and
free from kinks, cracks, leaks
and damage?
Materials/Parts
Lockwasher (22) (Item 195, Appendix F)
Lockwasher (8) (Item 171, Appendix F)
Read WARNING
on Page 2-1073
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