1 SAFETY
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
46
Pub. No. 291Y1-40720 Revision: 5
■ Inspection and Maintenance -
Prepare
<Inspection and Maintenance - Prepare (with
Engine Switched OFF)>
■ Engine Body - Check
<Belt -Check>
Make sure that dripped oil, parts,
tools, or other things are not left on
the floor around the engine. Always
maintain cleanliness and tidiness.
* Otherwise, a tumbling accident may occur.
* Wear proper protective gears for the work.
Watch your step during inspection
and maintenance work.
* Otherwise, a tumbling accident or a falling
accident may occur while working on the floor
panel or other high positions.
* The floor is extremely slippery due to spilt oil.
Thoroughly wipe off oil on the floor and the sole
of your shoes.
* Install a stable scaffold as required.
Cover the disconnected pipes or
joints and their openings properly so
that dusts or other foreign objects will
not enter into them.
* Otherwise, the devices may be damaged.
The engine must be inspected and
maintained only by qualified persons
who have received a required training
or on-site instructions, or done so
under the mentorship of a person who
have completed our training course.
* Otherwise, serious personal injury or damage to
the devices may occur.
When working on the upper part of the
engine and other hard-to-reach
places, use a stable work platform.
* Do not stand on an old stool or parts box.
Otherwise, it could result in injuries. In addition,
do not put any unnecessary objects on a work
platform.
While inspecting and maintaining, do
not put your hand in a gap between
the connecting rod, crankshaft,
timing gear or others and the
crankcase.
* Otherwise, you may get stuck and injured.
While operating the engine, stay away
from the moving parts.
* Otherwise, you may cut your hand by the
rotating parts, or be caught in them and injured.
Make sure that the tools to be used
are not damaged.
* Using a damaged tool or a wrong-size tool may
cause personal injury or damage to the devices.
Check and calibrate measurement
equipment periodically.
* Using uncalibrated measurement equipment
may cause damage to the devices or
performance degradation of them.
Be sure to lockout/tagout before
starting inspection and maintenance
work.
* Unexpected startup of the engine may cause
serious personal injury or damage to the
devices.
Be sure to establish zero energy state
before starting inspection and
maintenance work.
* Unexpected activation of the devices may result
in serious injury or damage to the devices.
Stay away from rotating parts during
operation.
* Otherwise you may get caught in the rotating
parts and seriously injured.
Keep the belt for the crankshaft
pulley or alternator free from oil and
grease.
* Otherwise, a slip may occur, which shortens the
service life of the belt.
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