Detroit Diesel Series 60 Operator's Manual page 130

BASIC TROUBLESHOOTING
Abnormal Coolant Temperature Symptoms and Probable Causes
Probable Causes
Restricted cooling system passages
Restricted radiator core passages
Slipping fan drive belts
Faulty temperature-controlled fan
Obstruction in front of radiator or intercooler
Low coolant level
Damaged hoses
Faulty thermostats
Faulty water pump
Faulty radiator pressure cap
Air in coolant
Thermostats not fully closed
Leakage around thermostat seals
Faulty temperature-controlled fan
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6SE484 0401 Copyright © 2004 DETROIT DIESEL CORPORATION
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