Komatsu — 2.4 Precautions for maintenance

Safety 2.4 Precautions for maintenance Working under the raised boom Danger of injury! The raised boom may suddenly fall! For safety reasons, a raised boom must be secured against dropping before you pass or stand under it. z The boom must be secured against moving if any work is to be carried out under it when it is in a raised position. For this purpose you should use a supporting prop (1) which is to be positioned below the boom. 1 z Park the machine on level, solid ground. z Apply the parking brake. z Place wheel chocks in front of the wheels to prevent the machine from inadvertently rolling away. z Lift the arm far enough to allow the supporting prop to be placed beneath the boom.

GK032080 2 z Switch off the engine. Free z With the engine switched off, lower the boom slowly until it rests on the supporting prop. z Set the control lever to "NEUTRAL" and secure it with the safety lever (2) (locked). Lock GK032035 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 fol- lows. z 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.

z When hitting pins or bucket teeth, there is a hazard that bro- ken pieces might be sent flying and injure people in the sur- rounding area. Always check that there is no one in the surrounding area. GK032081 z There is a hazard that the pin hit with strong force may fly out and injure people in the surrounding area. WA150-5H – VEAM934100 2-33 WARNING WARNING