17. GUIDES TO MAINTENANCE Welding instructions: Turn off the engine starting switch. Do not apply more than 200 V continuously. Connect grounding the cable within 1 m from the area to be welded. Avoid seals or bearings from being between the area to be welded and the position of grounding point. Fire prevention: Use nonflammable cleaner or light oil for cleaning parts. Keep flame or cigarette light away from light oil. Clamp faces: When O-rings or gaskets are removed, clean the clamp faces and replace the O-rings and gaskets with new ones. Be sure to fit O-rings and gaskets when assembling. Objects in your pockets:
Keep your pockets free of loose objects which can fall out and drop into the machinery; especially when you work on the machinery while bending over it. Checking undercarriage: When working in rocky areas, check for damage to the undercarriage and for looseness, flaws, wear and damage in bolts and nuts. Loosen the track tension a little when working in such areas. Cleaning machine: Do not direct a high-pressure jet directly at the radiator. Do not splash water over the electrical equipment. Never spray steam or water directly at the radiator or oil cooler portions. Controller:
The machine monitor controller may malfunction if affected by electrical interference from an outside source, so when installing any radio system to the machine, please contact your Komatsu distributor for advice. Checking lubricating oil level: The lubricating oil level should be neither too high nor too low. When checking and adding oil, check that the oil at the proper level. Pre- and post-work checks: Before starting work in mud, rain, snow or at seashore, check plugs and valves for tightness. Wash the machine immediately after the work to protect components from rusting. Lubricate components more frequently than usual.
Be sure to lubricate work equipment pins daily if they are submerged in water. Dusty worksites: When working at dusty worksites, do as follows: Check the air cleaner for clogging more frequently. Clean the air cleaner at shorter intervals than specified. Clean the radiator core frequently to avoid clogging. Clean and replace the fuel filter frequently. Clean electrical components, especially the starting motor and alternator, to avoid accumulation of dust. 3-3