Komatsu — Komatsu PC450LC-6 Hydraulic Excavator Operation & Maintenance Manual (EN)

30. EXTENDING MACHINE SERVICE LIFE 30.6 CRUSHER & SMASHER MAIN FIELDS OF APPLICATION ° Demolition ° Road repair work This is the optimum attachment for demolition of steel frame reinforced structures, and for crushing of concrete blocks and rock, etc. The unique blade shape provides heavy crushing power. MISTAKEN METHODS OF USE To ensure that the machine has a long life, and to ensure that operations are carried out in safety, do not operate the machine in any of the following ways. Do not operate the cylinder to the end of its stroke. Always leave approx. 5 cm (2 in) to spare.

Operations using cutting tip on one side only Impact operation with no load Twisting operations at end of cylinder stroke Sudden gripping and breaking operations PC450-ENG 5-26