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 TM 10-3930-644-14&P
B. COOLING SYSTEM
TROUBLE
PROBABLE CAUSE
POSSIBLE SOLUTION
Loss of coolant.
Leaks at hose or hose con-
Replace hose.
nections.
Cracked engine block or head.
Replace damaged part.
Defective head gasket.
Replace.
Leaking radiator.
Repair or replace.
Drain cocks loose or open.
Repair.
Leaking water pump.
Repair or replace.
Overheating.
Inoperative Instrument panel
Replace inoperative unit.
gauge or sending unit.
Thermostat does not open.
Replace thermostat.
Loose fan belt.
Adjust or replace belt.
Surface of radiator core clogged.
Clean the core.
Obstruction in cooling system.
Clean out cooling system.
Damaged or worn out water
Repair or replace.
pump.
Leak In cooling system.
Repair.
Rapid wear or
Incorrect adjustment.
Readjust.
breakage of fan
belt.
Incorrect belt.
Replace with correct type.
Fan blades striking belt.
Repair or replace fan.
Excessive alternator drag.
Check alternator bearings.
Broken or rough pulleys.
Replace pulleys.
Fan or water
Worn or damaged bearing or
Replace worn or damaged parts.
pump noisy.
seal.
Loose fan blades.
Repair or replace fan.
Broken pump impeller.
Repair.
Excessive pump shaft end play.
Repair.
Loose fan hub.
Tighten.
2-107
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