TM 55-2815-574-24
0015
ABOVE NORMAL READING ON ENGINE COOLANT TEMPERATURE GAUGE - Continued
MALFUNCTION
Faulty thermostat.
CORRECTIVE ACTION
Replace thermostat (WP 0139).
MALFUNCTION
Fuel-air mixture too lean.
CORRECTIVE ACTION
Perform engine tune-up. Contact Maintenance Supervisor.
MALFUNCTION
Exhaust plenum fan not operating.
CORRECTIVE ACTION
Replace exhaust plenum fan (TM 55-1925-205-23).
MALFUNCTION
Poor circulation.
CORRECTIVE ACTION
1.
Check coolant level in fresh water cooling system and fill to correct level if coolant level is low.
2.
Perform operational check of diesel engine (TM 55-1925-205-10).
3.
Inspect cooling system for collapsed or disintegrated hoses. Replace defective hoses
4.
Perform operational check of diesel engine (TM 55-1925-205-10).
5.
Inspect raw water strainer basket for debris. Clean or replace as needed (TM 55-1925-205-23).
6.
Perform operational check of diesel engine (TM 55-1925-205-10).
7.
Check flow of coolant through the heat exchanger. A clogged heat exchanger will cause an
inadequate supply of coolant on the suction side of the pump. Clean heat exchanger core
8.
Perform operational check of diesel engine (TM 55-1925-205-10).
0015-2