8. PRECAUTIONS FOR MAINTENANCE ¤ WARNING: For reasons of safety, always follow these safety precautions. 1-26 REPAIR WELDING Welding operations must always be carried out by a qualified welder and in a place equipped with a proper equipment. Gas is generated, and there is danger of fire or electrocution when carrying out welding, so never allow any unqualified personnel to carry out welding. The qualified welder must follow the precautions given below. ‡ Disconnect the battery terminals to prevent explosion of the battery. ‡ Remove the paint from the place being welded to prevent gas from being generated.
‡ If hydraulic equipment or piping, or places close to these are heated, flammable vapor or spray will be generated, and there is danger of this catching fire, so avoid applying heat to such places. ‡ If heat is applied directly to rubber hoses or piping under pressure, they may suddenly burst, so cover them with fireproof sheeting. ‡ Always wear protective clothing. ‡ Ensure that there is good ventilation. ‡ Clear up any flammable materials, and make sure that there is a fire extinguisher at the workplace. PRECAUTIONS WITH BATTERY When repairing the electrical system or when carrying out electrical welding, remove the negative - terminal of the battery to stop the flow of current.
Handling battery © See “16.3 IF BATTERY IS DISCHARGED”. WHEN ABNORMALITY IS LOCATED ‡ If any abnormality is found during inspection, always carry out repairs. In particular, if the machine is used when there is any abnormality in the brakes or work equipment systems, it may lead to serious accident. ‡ Depending on the type of failure, please contact your Komatsu distributor for repairs. RULES TO FOLLOW WHEN ADDING FUEL OR OIL If any flame is brought close to fuel or oil, there is danger that it will catch fire, so always follow the precautions below. ‡ Stop the engine when adding fuel or oil. ‡ Do not smoke. ‡ Spilled fuel and oil may cause you to slip, so always wipe it up immediately.
‡ Always tighten the cap of the fuel and oil fillers securely. ‡ Always add fuel and oil in a well-ventilated place. A0055020 A0055030 A0055040