Mitsubishi L2E Service Manual

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Service Manual Mitsubishi L-Series diesel engines
Version 08/2004
ENGLISH
TROUBLESHOOTING GENERAL
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
Is engine operating condition too heavy?
(Check for overload continuous running.)
No Z Find the cause over overload.
V 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.)
No Z Repair cooling system.
V Yes
Is injection timing correct? No Z Adjust injection timing.
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.

Mitsubishi L2E Specifications

General

Engine Model	L2E
Number of Cylinders	2
Starting System	Electric starter
Lubrication System	Forced lubrication by trochoid pump
Cooling System	Water-cooled