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TM 9-2320-364-20-2
2-1076
1. ENGINE OVERHEATS (WATER TEMP GAGE CONTINUOUSLY READS OVER
230F (110C) (CONT)).
Coolant hoses and clamps OK.
Radiator cooling fins OK.
Fan operates at low speed.
Fan operates at high speed.
Thermostat(s) faulty.
Water temperature gage faulty.
Cooling assembly faulty.
Water temperature switch faulty.
Water temperature sensor
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Fan operation/temp test.
If temperature does not lower
with fan at high speed, cooling
system is faulty.
YES
NO
Go to Step 10 of this
Fault.
5.
Does engine temperature
rise over 230F (110C) with
harness connector MC59
disconnected and fan
operating at high speed?
Go to Step 6 of this
Fault.
4.
Fault not corrected.
Notify DS
Maintenance.
YES
NO
Coolant hoses and clamps OK.
Radiator cooling fins OK.
Fan operates at low speed.
Fan does not operate at high
speed.
Thermostat(s) faulty.
Water temperature gage faulty.
Cooling assembly faulty.
Water temperature switch faulty.
Water temperature sensor
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Fan test.
If fan does not operate at high
speed with connector MC59
disconnected, hydraulic
components are faulty.
Does fan operate at high
speed with harness connector
MC59 removed from EPAC?
WARNING
Read WARNING
on Page 2-1077
WARNING
Read WARNING
on Page 2-1077
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