(para 4-63).
TM 5-3895-369-14
ENGINE OPERATING TEMPERATURE TOO HIGH (CONT.).
KNOWN INFO
Coolantlevel-OK.
Radiator-OK.
POSSIBLE PROBLEMS
Faulty drive belt.
Faulty fan hub or blades.
Faulty thermostat
Faulty water pump.
Faulty temperature gauge.
Faulty temperature sensor.
KNOWN INFO
Coolant level-OK.
Radiator-OK
Drive belt-OK.
POSSIBLE PROBLEMS
Faulty thermostat.
Faulty water pump.
Faulty temperature gauge.
Faulty temperature sensor.
TEST OPTIONS
Drive belt inspection.
REASON FOR QUESTION
A loose or worn drive belt will
cause water pump impeller to
rotate at a slower speed
reducing coolant flow.
TEST OPTIONS
Thermostat test.
REASON FOR QUESTION
An incorrect or malfunctioning
thermostat can cause engine to
run too hot.
4-68
