PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.3 PERSONNEL q Only authorized and duly trained personnel can service and repair the machine; additional precautions must be taken when grinding, welding and using a sledge hammer or heavy hammers. q When assemblying the equipment or cylinder connection pins, use wooden, plastic or in any case not excessi- vely hard tools to check the centering of the holes. Do not use your fingers, since you run the risk of cutting them. 2.8.4 EQUIPMENT q The normal or special equipment that must be installed on the machine or that have been removed must be stored in safe places, preventing them from falling down.
If they fall on someone, they can cause serious bodily harm. q When assemblying or removing any equipment, make sure that the cables and the lifting hook are in good conditions and properly dimensioned for the load to be lifted. RWA01320 2.8.5 WORKING UNDER THE MACHINE q Always lower the work equipment to the ground or in any ca- se to its lowest position before performing service or repairs under the machine. q Always lock the machine wheels securely. q Do not work under the machine, if this is not sufficiently sup- ported. RWA02520 2.8.6 KEEPING THE MACHINE CLEAN q Spilled oil or grease, scattered tools or broken pieces are dangerous, because they may cause someone to slip or trip.
Always keep the machine and the work site clean and tidy. q To clean the machine, use a pressurized jet of warm water or steam and the appropriate detergents available on the market. Do not use diesel oil, oil or solvents, since the for- mer leave an oily coat that favours the sticking of dust, while the latter (even if weak) damage the painted surfaces and therefore facilitate rusting. RWA01330 q While cleaning the machine, keep the pressurized jet at a minimum distance of approximately 60 cm, in order to avoid damaging the warning plates and the pictograms. If one or more plates should be damaged, request for spare ones to Komatsu or to your Komatsu Dealer and provide for replacing them.
q Water into the electrical system provokes the oxidation of the contacts and may hinder the start of the machine or even make it start suddenly and abruptly. For this reason, never use water or steam jets to clean sensors, connectors or the inside of the operator's cab. 44