12. OPERATION 12.10 PROHIBITIONS FOR OPERATION Prohibited operations using swing force Do not use the swing force to compact soil or break earth mounds or walls. When swinging, do not dig the bucket teeth into the soil. These op- erations will damage the work equipment. Prohibited operations using travel force Do not leave the bucket dug into the ground and use the travel force to excavate. This will bring excessive force to bear on the rear of the machine.
Precautions when operating hydraulic cylinders to end of stroke If the cylinder is operated to the end of its stroke during operations, force will be brought to bear on the stopper inside the cylinder, and this will reduce the life of the machine. To prevent this, always leave a small safety margin when operating the cylinders. Prohibited operations using dropping force of bucket Do not use the dropping force of the bucket as a pickaxe, breaker, or pile driver. This will bring excessive force to bear on the rear of the ma- chine, and will not only damage the machine, but is also dangerous.
PC450-ENG 2-67 WARNING • If it is necessary to operate the work equipment control lever when the machine is travelling, stop the machine before oper- ating the work equipment control lever. • If the lever is moved inside the deceleration range, engine speed will suddenly rise. Operate the levers carefully. • Never operate the machine on a rock bed (hard or soft rock). WARNING Vorwärts Vorwärts