Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual, Page: 333 / 504

MAINTENANCE
SAFETY CRITICAL PARTS
4-15
SAFETY CRITICAL PARTS 4
For using the machine safely for an extended period of time, you must periodically replace the safety critical and
fire prevention-related parts listed in the table of important parts.
Material quality of these parts can change as time passes and they are likely to wear out or deteriorate. However,
it is difficult to determine the extent of wear or deterioration at the time of periodic maintenance. Hence, it is
required to replace them with new ones regardless of their condition after a certain period of usage. This is impor-
tant to ensure that these parts maintain their full performance at all times.
Furthermore, should anything abnormal be found on any of these parts, replace it with a new one even if the peri-
odic replacement time for the part has not yet arrived.
If any of the hose clamps show deterioration like deformation or cracking, replace the clamps at the same time as
the hoses.
Also perform the following checks with hydraulic hoses which need to be replaced periodically. Tighten all loose
clamps and replace defective hoses, as required.
When replacing hoses, always replace O-rings, gaskets, and other such parts at the same time.
Have your Komatsu distributor replace the critical parts.