3 OPERATION
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
90
Pub. No. 291Y1-40720 Revision: 5
Engine Exterior - Check
1 Check combustible materials near
the engine or battery.
ï‚®If combustible materials or dust are found
near the engine or battery, remove them.
2 Check the engine and battery for
contamination.
ï‚®If dirty, clean them.
3 Check a leak of fuel, engine oil, or
coolant from any part of the engine.
• If a leak is found, contact your MHIET
dealer "
CONTACT LIST" (→ Page
10) to arrange the repair.
4 Check the alternator belt
tension. "
Belt - Check" (→ Page 126)
5 Check bolts and nuts for looseness
from the outside.
6 Check the battery and cable
terminals and connections for
corrosion or looseness.
• If an abnormality is found, consult
your MHIET dealer "
CONTACT LIST"
(→ Page 10).
7 Check the following open/close
conditions.
• Fuel feed valve: open
• Coolant drain cock (plug): closed
• Engine oil drain valve: closed
Make sure that any accumulation of
flammables, fuel leaks, engine oil
leaks, moisture, etc. are not found
around the hot parts of the engine
(exhaust manifold) and the battery.
* It may cause a fire.
Make sure that a coolant leak from
any part of the engine is not found.
* Coolant may flow out.
Make sure that the open/close
conditions of the valves, plugs and
cocks on each line are normal.
* Otherwise, the engine may seize.
Make sure that the open/close
condition of the coolant drain cock on
the water pump is normal.
* Otherwise, insufficient cooling will occur, which
may cause serious damage to the devices.
Make sure that the engine oil leak
from any part of the engine is not
found.
* If engine oil gets in your eyes, it may cause pain
and lead to sight loss at the worst.
Before starting the engine, check the
battery and cable terminals for
corrosion. In addition, check the
connections for looseness.
* Defective contact or short circuit may cause
damage to the devices.
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