Komatsu WA20-2, Operation & Maintenance Manual

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22. PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
To ensure safety at all times when operating or driving the machine, the user of the machine must
always carry out periodic maintenance. In addition, to further improve safety, the user should also carry
out periodic replacement of the parts given in the table. These parts are particularly closely connected
to safety and fire prevention.
With these parts, the material changes as time passed, or they easily wear or deteriorate. However,
it is difficult to judge the condition of the parts simply by periodic maintenance, so they should always
be replaced after a fixed time has passed, regardless of their condition. This is necessary to ensure that
they always maintain their function completely.
However, if these parts show any abnormality before the replacement interval has passed, they
should be repaired or replaced immediately.
If the hose clamps show any deterioration, such as deformation or cracking, replace the clamps at
the same as the hoses.
When replacing the hoses, always replace the O-rings, gaskets, and other such parts at the same
time.
Ask your Komatsu distributor to replace the safety critical parts.