1 SAFETY
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
37
Pub. No. 291Y1-40720 Revision: 5
<Coolant Level - Check>
<Battery - Check>
<Pre-cleaner - Check for Clogging>
<Air Cleaner - Check for Clogging>
<Damper Temperature - Check>
<Manual Turning Gear - Check>
Use the genuine LLC specified in this
Operation & Maintenance Manual.
* Otherwise, the devices may be damaged.
Keep LLC to be the specified
concentration.
* If LLC concentration is low, it may cause
corrosion of the radiator or heat exchanger.
* If LLC concentration is high, it may cause
damage to the devices or overheat due to the
seized engine parts.
Do not open the radiator cap or
coolant tank cap while the engine is
hot.
* Otherwise, you may get burns by steam or
water splashing out.
Tighten the drain cock on the water
pump properly.
* Insufficient tightening may cause a coolant leak.
When handling coolant (LLC), always
wear suitable protective gears such
as rubber gloves and protective
eyeglasses.
* If LLC comes into contact with your eyes, it may
result in sight loss at the worst.
* If LLC comes into contact with your skin while
the engine is hot, you may get burned by heat.
Maintain the coolant level properly.
* If the coolant level is low, overheat or cavitation
in the engine may occur.
Do not short the battery terminals.
* Otherwise, sparks will occur, which may cause
a fire or an explosion.
Do not touch battery terminals with
wet hands.
* You may get an electric shock.
When checking and servicing the
battery, wear proper protective gears
such as protective eyeglasses, rubber
gloves, working clothes with long
sleeves and long trousers.
* If battery fluid comes into contact with your eyes
or skin, it may result in sight loss or burns.
Make sure that the pre-cleaner is free
from clogging.
* Insufficient intake air may result in loss of
power, incomplete combustion, exhaust gas
temperature rise, and overspeed of the
turbocharger.
Make sure that the air cleaner is free
from clogging.
* Insufficient intake air may result in loss of
power, incomplete combustion, exhaust gas
temperature rise, and overspeed of the
turbocharger.
Make sure that the damper
temperature is within the permissible
range (for continuous use: 90°C
[194°F] or less; for emergency use:
100°C [212°F] or less).
* Degradation of silicone oil may result in a loss
of damping and breakage of the crankshaft.
Before starting the engine, pull out
the manual turning gear shaft.
* Starting the engine while the turning gear is
engaged with the ring gear may result in serious
injury or destruction of the engine.
Make sure that the plate of the
manual turning gear is securely
engaged in the shaft groove.
* Otherwise, the devices may be damaged.
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