Precautions When Working Under Machine Or Work Equipment; Proper Tools - Komatsu PC220LC -8 Operation & Maintenance Manual

PRECAUTIONS FOR MAINTENANCE

PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT

Make sure the hoists or jacks you use are in good repair and
strong enough to handle the weight of the component. Never
use jacks at places where the machine is damaged, bent, or
twisted. Never use frayed, twisted or pinched wire rope. Never
use bent or distorted hooks.
It is extremely dangerous to work under the machine if the track
shoes are lifted off the ground and the machine is supported
only with the work equipment. If any of the control levers is
touched by accident, or there is damage occurring to the
hydraulic piping, the work equipment or the machine will
suddenly drop. This is extremely dangerous. Never work under
the work equipment or the machine.
If it is necessary to raise the work equipment or the machine and then go under it to carry out inspection or
maintenance, support the work equipment and machine securely with blocks and stands strong enough to
support the weight of the work equipment and machine.
If the work equipment and machine are not supported, there is a hazard that they may come down and that this
may lead to serious personal injury or death.
Never use concrete blocks for supports. They can collapse under even light loads.

PROPER TOOLS

Use only tools suited to the task and be sure to use the tools
correctly. Using damaged, deformed, or low quality tools, or
making improper use of the tools may cause serious personal
injury.
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SAFETY