¤ WARNING: Failure to follow these safety precautions may lead to a serious accident. 8. PRECAUTIONS FOR MAINTENANCE 1-35 WELDING REPAIRS When carrying out welding repairs, carry out the welding in a properly equipped place. The welding should be performed by a qualified worker. During welding operations, there is the danger of generation of gas, fire, or electric shock, so never let an unqualified worker do welding. The qualified welder must do as follows. ‡ To prevent explosion of the battery, remove the battery terminals. ‡ To prevent generation of gas, remove the paint from the location of the weld.
‡ If hydraulic equipment or piping or places close to them are heated, a flammable gas or mist will be generated and there is danger of it catching fire. To avoid this, never subject these places to heat. ‡ If heat is applied directly to rubber hoses or piping under pressure, they may suddenly break, so cover them with a fireproof covering. ‡ Wear protective clothing. ‡ Make sure there is good ventilation. ‡ Remove all flammable objects and provide a fire extinguisher. REMOVE BATTERY TERMINALS When repairing the electrical system or when carrying out electric welding, remove the negative - terminal of the battery to stop the flow of electricity.
Handling battery © See “16.5 IF BATTERY IS DISCHARGED”. A0055170 ACTION WHEN ABNORMALITY IS FOUND DURING INSPECTION ‡ If any abnormality is found during inspection, always carry out repairs. In particular, if the machine is used when there are still problems with the brake or work equipment systems, it may lead to serious injury. ‡ If necessary depending on the type of failure, please contact your Komatsu distributor for repairs. RULES TO FOLLOW WHEN ADDING FUEL OR OIL If flame is brought close to fuel or oil, there is danger that it will catch fire. Always do as follows. ‡ Stop the engine when adding fuel or oil. ‡ Do not smoke. ‡ Wipe up spilled fuel and oil immediately.
‡ Always tighten the caps of the fuel and oil fillers securely. ‡ Always add fuel and oil in a well-ventilated place. Do not leave the work place when adding fuel or oil. A0055020 A0055040