Komatsu PC80MR-5E0, Руководство по эксплуатации и техническому обслуживанию

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PROHIBITION OF OPERATIONS USING HYDRAULIC CYLINDERS TO STROKE
END
If the work equipment is used with the cylinder rod operated to
its stroke end (fully extended or fully retracted), and given im-
pact by some external force, the hydraulic cylinders may be
damaged, causing personal injury.
Do not perform operations with the hydraulic cylinder at stroke
end.
PROHIBITION OF OPERATIONS USING BUCKET DROPPING FORCE
Do not use the dropping force of the machine for digging, nor
use the dropping force of the bucket as a mattock, breaker, or
pile driver.
This will drastically reduce the life of the machine.
PROHIBITION OF OPERATIONS USING BUCKET AS LEVER
Do not put the bucket back to a rock and use it as a lever to
dig.
This can apply an excessive force to the chassis and work
equipment, and the machine may break.
As shown in the figure, dig by using only the force of the arm or
bucket.
If an excessive force is applied, the safety valve of the hydraul-
ic system controls it into a proper range to prevent breakage of
the machine.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-143
WENAM00241