GUARDS
• Guards are installed in the area of the engine to protect personnel from moving parts. These guards should
only be removed by Komatsu service engineer unless specific instructions are given in this manual.
END OF SERVICE LIFE
• For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor.
STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE
If you are caught or pinched between the work equipment during operation, or exposed to high-temperature or
high-pressure liquids, it is dangerous and may cause serious personal injury or death. Always observe the fol-
lowing.
• Lower the work equipment completely to the ground and
stop the engine before performing any inspection and
maintenance.
• Turn the starting switch to ON position, set work equip-
ment lock lever (1) to FREE position (F), operate the work
equipment control lever to RAISE and LOWER position a
few times repeatedly to release the remaining pressure in
the hydraulic circuit, then set work equipment lock lever (1)
and parking brake lever (2) to LOCK position (L).
• Check that the battery relay is off and main power is not
conducted. (After turning the starting switch to OFF posi-
tion, wait for approximately 1 minute and press the horn
switch. If the horn does not sound, power is not conduct-
ed.)
• Block the tracks from movement.
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING
To prevent accident, do not perform maintenance with the engine running. When it is necessary to perform the
maintenance with the engine running, always observe the following.
• One worker must always sit in the operator's seat and be ready to stop the engine at any time. All workers
must maintain contact with the other workers.
SAFETY PRECAUTIONS FOR MAINTENANCE
2-29
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