Komatsu PC22MR-3 Operation & Maintenance Manual page 67

Hydraulic excavator
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SAFETY
q Do not carry out demolition work under the machine.
There is a hazard that the machine may become unstable
and tip over.
q When working on or from the top of buildings or other
structures, check the strength and the structure before
starting operations. There is a hazard of the building
collapsing and causing serious injury or damage.
q When carrying out demolition work, do not carry out
demolition above your head. There is a hazard of broken
parts falling or of the building collapsing and causing
serious injury or property damage.
q Do not use the impact force of the work equipment for
breaking work. There is a hazard of damage to the work
equipment, 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.
q 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.
q 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.
q Do not suddenly lower, swing, or stop the work equipment.
q Do not suddenly extend or retract the boom cylinder. There is a hazard that impact will cause the machine
to tip over.
q Do not pass the bucket over the head of other workers or over the operator's seat of dump trucks or other
hauling equipment.
The load may spill or the bucket may hit the dump truck and cause serious personal injury or death.
WEAM014500
SAFETY MACHINE OPERATION
2-39

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