Keeping The Machine Clean; Use Of The Engine During Maintenance; Periodical Change Of The Safety Related Parts - Komatsu WB93S-5 F50003 Operation & Maintenance Manual

PRECAUTIONS TO BE TAKEN DURING MAINTENANCE

2.8.6 KEEPING THE MACHINE CLEAN

Spilled oil or grease, scattered tools or broken pieces are
q
dangerous, because they may cause someone to slip or trip.
Always keep the machine and the worksite clean and tidy.
To clean the machine, use a pressurized jet of warm water or
q
steam and the specific detergents available on the market. Do
not use diesel 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
rusting.
While cleaning the machine, keep the pressurized jet at a
q
minimum distance of approx. 60 cm, in order to avoid damaging
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.
Water into the electric system provokes the oxidation of the
q
contacts and may hinder the start of the machine or even make
it start suddenly and abruptly. For this reason, avoid using water
or steam jets to clean sensors, connectors or the inside of the
operator's cab.

2.8.7 USE OF THE ENGINE DURING MAINTENANCE

During maintenance operations, run the engine only when indispensable. If the engine must be running (for
q
example, when checking the functionality of the alternator), it is advisable that someone remains seated in the
driving position, so that the engine can be stopped whenever necessary.
During maintenance operations with running engine, neither move the control locking devices from the "lock"
q
position, nor change the position of the gearshift lever.
Service personnel must not move any control lever.
When carrying out maintenance operations, do not touch the moving parts of the machine and avoid wearing
q
large and loose clothes.

2.8.8 PERIODICAL CHANGE OF THE SAFETY RELATED PARTS

Periodically change the following components, which are important for safety and fire prevention:
q
Fuel system: fuel delivery and return pipes.
Hydraulic system: main delivery pipes of the hydraulic pump.
Hydraulic system: work circuit pipes from the distributor to the hydraulic cylinders.
Safety belt.
Even if they seem to be in good conditions, these components must be periodically changed with new ones.
q
In fact, these components tend to deteriorate over time.
If one of these parts is defective, change or repair it even if the prescribed change interval has not elapsed yet.
q
(See "4.6 PERIODICAL CHANGE OF THE SAFETY RELATED COMPONENTS").
54
RWA01330