Komatsu PC400LC-5 Operation & Maintenance Manual page 147

17. GUIDES TO MAINTENANCE
Warning tag:
Attach the warning tag to the starting switch or other appropriate control lever to avoid someone who
is not aware of the circumstances from starting the engine.
Obey precautions:
During the operation, always obey the precautions on the safety label attached to the machine.
Welding instructions:
l Turn off the engine starting switch.
l
Do not apply more than 200 V continuously.
l Connect grounding the cable within 1 m from the area to be welded.
l Avoid seals or bearings from being between the area to be welded and the position of grounding
point.
l Do not use the area around the work equipment pins or the hydraulic cylinders as the 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.
Precautions when washing machine:
l
Never spray steam or water directly on the connectors and mechatronics parts.
l Do not allow water to get on the monitors and controllers inside the operator's cab.
l Never spray steam or water directly at the radiator or oil cooler portions.
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