Komatsu WA500-6H, Operation & Maintenance Manual, Page: 257 / 412

4.1 Guides to maintenance
Maintenance
WA500-6H – VEAM430100
4-3
z Do not use the area around the work equipment pins or the
hydraulic cylinders as the grounding point.
z Remove the negative (-) terminal of the battery to stop the
flow of electric current.
Do not drop things inside machine:
z When opening inspection windows or the oil filler port of the
tank to carry out inspection, be careful not to drop nuts,
bolts, or tools inside the machine.
If such things are dropped inside the machine, it will cause
damage and malfunction of the machine, and will lead to fail-
ure. If you drop anything inside the machine, always remove
it immediately.
z
Do not put unnecessary things in your pockets. Carry only
things which are necessary for inspection.
Dusty worksites:
When working at dusty worksites, do as follows:
z Check the air cleaner clogging caution lamp more frequently
to check the degree of clogging of the air cleaner.
Clean the air cleaner element more frequently.
z Clean the radiator core frequently to avoid clogging.
z Clean and replace the fuel filter frequently.
z Clean electrical components, especially the starting motor
and alternator, to avoid accumulation of dust.
z When inspecting or changing the oil, move the machine to a
place that is free of dust to prevent dirt from getting into the
oil.
Avoid mixing oil:
If a different brand or grade of oil has to be added, drain the old
oil and replace all the oil with the new brand or grade of oil.
Never mix different brands or grades of oil.
Locking inspection covers:
Lock inspection cover in position securely with the lock bar. If
inspection or maintenance is carried out with the inspection
cover not locked in position, there is a hazard that it may be sud-
denly blown shut by the wind and cause injury to the worker.