PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.3 PERSONNEL 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. When assemblying the equipment or cylinder connection pins, use wooden, plastic or in any case not excessive- ly 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 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 some- one, they can cause serious bodily harm. When assemblying or removing any equipment, make sure that the ropes and the lifting hook are in good conditions and proper- ly dimensioned for the load to be lifted. RWA01320 2.8.5 WORKING UNDER THE MACHINE Always lower the work equipment to the ground or in any case to its lowest position before performing service or repairs under the machine. Always lock the machine tracks securely. Do not work under the machine, if this is not sufficiently support- ed. RWA02520 2.8.6 CLEANING THE MACHINE Spilled oil or grease, scattered tools or broken pieces are dan- gerous, because they may cause someone to slip or trip.
Al- ways keep the machine and the work site clean and tidy. To clean the machine, use a pressurized jet of warm water or steam and the appropriate detergents available on the market. Do not use gas oil, oil or solvents, since the former leave an oily coat that favours the sticking of dust, while the latter (even if weak) damage the painted surfaces and therefore facilitate rust- ing. While cleaning the machine, keep the pressurized jet at a mini- mum distance of approx. 60 cm (24 in) in order not to damage the warning plates and the pictograms. If the plates are damaged, request Komatsu or your Komatsu Dealer to send you spare plates and change them.
RWA01330 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. 56