Mitsubishi L Series Service Manual page 13

problems such as an increase of oil consumption, de-
crease of output, and starting difficulties. For effective
removal of dust from intake air, conduct maintenance
of the air cleaner according to the following instruc-
tions.
• Do not conduct maintenance of the air cleaner/pre-
cleaner while the engine is operating. Engine opera-
tion without the air cleaner/precleaner in place allows
foreign matters to enter the turbocharger, causing it
to damage seriously.
• Remove the air cleaner/pre-cleaner slowly to prevent
dust accumulated on the element from falling off.
After removing the air cleaner or pre-cleaner, imme-
diately cover the opening (inlet port in case of air
cleaner; port in body in case of pre-cleaner) with
plastic sheet or similar means to prevent dust from
entering the engine.
• Air cleaners equipped with a dust indicator will issue
an alarm if the element gets clogged. Service the
cleaner as soon as possible if an alarm is issued.
Observe safety rules at work site
Observe the safety rules established at your workplace
when operating and maintaining the engine.
Do not operate the engine if you are feeling ill.
Operation of the engine with reduced awareness may
cause improper operation that could result in accidents.
In such a case, inform your supervisor of your condi-
tion.
When working in a team of two or more people, use
specified hand signals to communicate among work-
ers.
Work clothing and protective gear
Wear a hardhat, face shield, safety shoes, dust mask,
gloves and other protective gear as needed.
When handling compressed air, wear safety goggles,
hardhat, gloves and other necessary protective gear.
Works without wearing proper protective gear could re-
sult in serious injuries.
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 with new tools.
Avoidance of prolonged time of starter oper-
ation
Do not operate the starter for more than 10 seconds at
a time even if the engine does not start. Wait for at least
30 seconds before next engine cranking.
Continuous operation of the starter will drain the battery
power and cause the starter to seize.
Do not turn off battery switch during opera-
tion
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 en-
gine
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.
Avoid continuous engine operation in a low
load condition
Do not operate the engine continuously for more than
10 minutes at a load of less than 30%. Engine opera-
tion in a low load condition increases the emission of
unburned fuel. Therefore, a prolonged time of engine
operation in a low load condition increases the quantity
of unburned fuel adhering to engine parts, provoking
the possibility of engine malfunctioning and shortening
the service life of the engine.
Ventilation of engine room
Always keep the engine room well ventilated. Insuffi-
cient amount of intake air causes the operating temper-
ature to rise, resulting in poor output and lowered
performance.
It is highly recommended to calculate the required
amount of air supply to the engine and install an ade-
quate ventilation system before installing the engine.
Avoid contact with high-pressured fuel
Should fuel leak from a fuel injection pipe, do not touch
the spouting fuel directly.
Fuel in the fuel injection pipes is under high pressure. If
high-pressured fuel contacts you skin, it penetrates
through the skin and may result in gangrene.
INTRODUCTION
IX