Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

Page: 59 / 504

SAFETY
PRECAUTIONS FOR MAINTENANCE
2-37
PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT
q
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.
q
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 con-
trol 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.
q
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.
q
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.