Overheating - Mitsubishi Heavy Industries L2 Service Manual

TROUBLESHOOTING
Is engine operating condition too heavy?
(Check for overload continuous running.)
Yes
Is cooling system in good order?
(Check cylinder head gasket for leaking, water pump, water hose and radiator
fins for clogging and thermostat for malfunctioning.)
Yes
34 / 155
Is injection timing correct?
6.4

Overheating

6.4.1 Matters to be checked before
diagnosis
1. Lack of coolant and leakage
2. Loosening of fan belt
3. Clogging of radiator fins
4. Wrong concentration of antifreeze solution
5. Clogging of muffler
6. Lack of engine oil and deterioration
7. Lack of cooling air
8. Defective thermostat
6.4.2 Diagnosis
CAUTION
Overheating is mostly caused by mis-matching load
to the engine. If overheating arises only when the
engine drives a load, measure the ambient
temperature and coolant temperature under the
working load condition (with full open thermostat) to
see if the rise of the temperature is 60°C or lower
than ambient temperature. If it exceeds, it is
recommended to check other factors than engine
main parts.
ENGLISH
No Find the cause over overload.
No Repair cooling system.
No Adjust injection timing.
Service Manual Mitsubishi L-Series diesel engines
GENERAL
Version 08/2004