Conduct Cooling Operation Before Stopping The Engine; Protection Of The Engine Against Water Entry; Conduct Proper Maintenance Of Air Cleaner; Use Of Tools Optimum For Each Work - Mitsubishi Heavy Industries L-Series Operation & Maintenance Manual

Chapter 1 BASIC SAFETY PRECAUTIONS
Conduct cooling operation
before stopping the engine
Before stopping the engine, let it idle in low gear for 5
to 6 minutes to cool down.
Stopping the engine immediately after high-load oper-
ation will cause engine parts to heat up and shorten
the service life of the engine.
During cooling operation, check the engine for abnor-
malities.
Protection of the engine against
water entry
Do not allow rainwater, etc. to enter the engine
through the air inlet or exhaust openings.
Do not wash the engine while it is operating. Cleaning
fluid (water) can be sucked into the engine.
Starting the engine with water inside the combustion
chambers can cause the water hammer action which
may result in internal engine damage and serious
accidents.
Conduct proper maintenance of
air cleaner
The major cause of abnormal wear on engine parts is
dust from intake air. Worn parts produce many prob-
lems such as an increase of oil consumption,
decrease of output, and starting difficulties. For effec-
tive removal of dust from intake air, maintain the
engine with air cleaner according to the following
instructions.
Never service the air cleaner while the engine is run-
ning. Operating the engine without the air cleaner can
suck particles of foreign matter into the engine and
could result in serious accidents.
Remove theair cleaner slowly to prevent dust accu-
mulated on the element from falling off. After remov-
ing the air cleaner, immediately cover the air inlet with
plastic sheet or similar means to prevent dust from en-
tering the engine.
1-8
Use of tools optimum for each
work
Always keep in mind to select most appropriate tools
for the work to be performed and use them correctly. If
tools are damaged, replace them with new tools.
Avoidance of prolonged time of
starter operation
Do not use the starter for more than 10 seconds at a
time. If the engine does not start, wait for at least 1
minute before cranking again.
Continuous operation of the starter will drain the bat-
tery power and cause the starter to seize.
Do not turn off the battery
switch during operation

Do not turn off the battery switch during operation.

If the battery switch is turned OFF when the engine is
running, not only various meters will stop working but
also the alternator may have its diode and transistor
deteriorated.
Cautionary instructions for
transporting the engine
When transporting the engine on a truck, consider the
engine weight, width and height to ensure safety.
Abide by road traffic law, road vehicles act, vehicle
restriction ordinance and other pertinent laws.