Komatsu PC450-8, Operation & Maintenance Manual, Page: 52 / 474

SAFETY MACHINE OPERATION
SAFETY
2-28
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In the operation using the fork or grapple, do not attempt to
pick up an object with their tips.
There is a danger of damage to the machine or personal
injury, as the picked - up object can easily slip off.
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Do not use the impact force of the work equipment for break-
ing work. There is a hazard of damage to the work equip-
ment, or a hazard of serious personal injury being caused by
flying pieces of broken materials, or of the machine tipping
over due to reaction from the impact.
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Generally speaking, the machine is more liable to overturn
when the work equipment is at the side than when it is at the
front or rear.
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When using a breaker or other heavy work equipment, there is a hazard of the machine losing its balance and
tipping over. When operating on flat ground as well as on slopes.
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Do not suddenly lower, swing, or stop the work equipment.
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Do not suddenly extend or retract the boom cylinder. There is a hazard that impact will cause the machine
to tip over.
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Do not pass the bucket over the head of other workers or over the operator's seat of dump trucks or other haul-
ing equipment. The load may spill or the bucket may hit the dump truck and cause serious injury or property
damage.
OPERATIONS ON SNOW
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Snow-covered or frozen surfaces are slippery, so be extremely careful when traveling or operating the machine,
and do not operate the levers suddenly. Even a slight slope may cause the machine to slip, so be particularly
careful when working on slopes.
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With frozen ground surfaces, the ground becomes soft when the temperature rises, and this may cause the
machine to tip over.
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If the machine enters deep snow, there is a hazard that it may tip over or become buried in the snow. Be careful
not to leave the road shoulder or to get trapped in a snow drift.
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When clearing snow, the road shoulder and objects placed beside the road are buried in the snow and cannot
be seen. There is a hazard of the machine tipping over or hitting covered objects, so always carry out opera-
tions carefully.