PRECAUTIONS FOR MAINTENANCE SAFETY WORK UNDER THE MACHINE q If it is necessary to go under the work equipment or the machine to carry out service and maintenance, support the work equipment and machine securely with blocks and stands strong enough to support the weight of the work equipment and machine. q It is extremely dangerous to work under the machine if the track shoes are lifted off the ground and the machine is supported only with the work equipment. If any of the con- trol levers is touched by accident, or there is damage occurring to the hydraulic piping, the work equipment or the machine will suddenly drop. This is extremely dangerous.
Never work under the work equipment or the machine. NOISE If the noise from the machine is too loud, it may cause temporary or permanent hearing problems. When carrying out maintenance of the engine and you are exposed to noise for long periods of time, wear ear covers or ear plugs while working. PRECAUTIONS WHEN USING HAMMER When using a hammer, pins may fly out or metal particles may be scattered. This may lead to serious injury. Always do as follows. q If hard metal parts such as pins, bucket teeth, cutting edges, or bearings are hit with a hammer, there is a hazard that pieces might be scattered and cause injury. Always wear safety goggles and gloves.
q When hitting pins or bucket teeth, there is a hazard that broken pieces might be sent flying and injure people in the surrounding area. Always check that there is no one in the surrounding area. q There is a hazard that the pin hit with strong force may fly out and injure people in the surrounding area. REPAIR WELDING Welding operations must always be carried out by a qualified welder and in a place equipped with proper equip- ment. There is a hazard of gas, fire, or electrocution when carrying out welding, so never allow any unqualified personnel to carry out welding.
REMOVING BATTERY TERMINAL When repairing the electrical system or when carrying out electrical welding, remove the negative (-) terminal of the battery to prevent the flow of current. 2-30