Komatsu WA20-2, Operation & Maintenance Manual

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17. GUIDES TO MAINTENANCE 17. GUIDES TO MAINTENANCE
Checking foreign materials in drained oil and on filters:
After oil is changed or filters are replaced, check the oil and filters for metallic particles and foreign
materials. If large quantities of metallic particles or foreign materials are found, consult your Komatsu
distributor.
Fuel strainer:
If your machine is equipped with a fuel strainer, do not remove it while fueling.
Oil change:
Check or change oils in the places where dust is scarce to keep foreign materials away from oils.
Warning tag:
Attach the warning tag to the starting switch or other appropriate control lever to prevent anyone from
starting the engine during maintenance.
Obey precautions:
During the operation, always obey the precautions on the safety label attached to the machine.
Welding instructions:
‡ Turn off the engine starting switch.
‡ Do not apply more than 200 V continuously.
‡ Connect grounding the cable within 1 m (3.28 ft) from the area to be welded.
‡ Avoid seals or bearings from being between the area to be welded and the position of the grounding
point.
‡ Never weld any pipe or tube containing fuel or oil.
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.