¤ WARNING: For reasons of safety, always follow these safety precautions. 8. PRECAUTIONS FOR MAINTENANCE 1-30 SUPPORT FOR WORK EQUIPMENT When carrying out inspection and maintenance with the work equipment raised, fit stand 2 under the boom to prevent the work equipment from moving down. In addition, set the work equipment control levers to HOLD, then set safety lock lever 1 to the LOCK position. A0055140 PROPER TOO LS Use only tools suited to the task. Using damaged, low quality, faulty, or makeshift tools could cause personal injury. There is danger that pieces from chisels with crushed heads or hammers may get into your eyes and cause blindness.
Tools © See “21.1 INTRODUCTION OF NECESSARY TOOLS”. A0055120 PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS Hoses in the fuel system, hydraulic system, and brake system are important parts for safety, so they must be replaced at periodic intervals. The replacement of such safety critical parts requires skill and experience, so please contact your Komatsu distributor for replacement. ‡ Replace these components periodically with new ones, regardless of whether or not they appear to be defective. These components deteriorate over time, and leakage of oil may cause fire or failure of the work equipment system.
‡ Replace or repair any such components if any defect is found, even though they have not reached the time specified. Replacement of safety critical parts © See “22. PERIODIC REPLACEMENT OF SAFETY CRITI- CAL PARTS”.