Komatsu — 8.1 BEFORE CARRYING OUT MAINTENANCE

8. PRECAUTIONS FOR MAINTENANCE WARNING: Failure to follow these safety precautions may lead to a serious accident. 1-21 KEEP WORK PLACE CLEAN AND TIDY Do not leave hammers or other tools lying around in the work place. Wipe up all grease, oil, or other substances that will cause you to slip. Always keep the work place clean the tidy to enable you to carry out operations safely. If the work place is not kept clean and tidy, there is danger that you will trip, slip, or fall over and injure yourself. APPOINT LEADER WHEN WORKING WITH OTHERS When repairing the machine or when removing and installing the work equipment, appoint a leader and follow his instructions during the operation.

When working with others, misunderstandings between workers can lead to serious accidents. RADIATOR WATER LEVEL ‡ When inspecting the radiator water level, stop the engine, and wait for the engine and radiator to cool down. Check the water level in the sub-tank. Under normal conditions, do not open the radiator cap. ‡ If there is no sub-tank, or the radiator cap must be removed, always do as follows. ‡ Wait for the radiator water temperature to go down before checking the water level. (When checking if the water temperature has gone down, put your hand near the engine or radiator and check the air temperature.

Be careful not to touch the radiator or engine.) ‡ Release the internal pressure before removing the radiator cap, and remove the radiator cap slowly. A0055050 A0067380 STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE ‡ When carrying out inspection and maintenance, park the machine on level ground where there is no danger of falling rocks or land slides, or of flooding if the land is low, then lower the work equipment and stop the engine. ‡ Put blocks under the tires to prevent the machine from moving.

‡ If it is necessary to start the engine, such as when flushing the inside of the radiator, place gear shift lever 1 at the neutral position, set parking brake lever 2 to the PARKING position, and always carry out the operation with two workers. ‡ One worker should sit in the operator’s seat to make sure that the engine can be stopped at any moment. Be careful not to touch any lever unless it is necessary to operate it. ‡ When carrying out maintenance with the body raised, always set the dump lever to the HOLD and lock it in position, then insert the safety pin securely.