Komatsu WA480-8 Operation & Maintenance Manual page 59

SAFETY
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 to the ground and stop the en-
gine before performing any inspection and maintenance.
• After stopping the engine (work equipment is lowered to
the ground), turn the starting switch to ON position. Press
work equipment lock switch (2) to release the work equip-
ment lock, then operate work equipment control lever (1)
to RAISE and LOWER position fully 2 to 3 times to release
the remaining pressure in the hydraulic circuit. Then lock
the work equipment (pilot lamp lights up) by pressing work
equipment lock switch (2).
After releasing the remaining pressure in the hydraulic cir-
cuit, turn the starting switch to OFF position.
• Set parking brake switch (3) to ON (operation) position (A)
to apply the parking brake, then put blocks in front of and
behind the tires to prevent the machine from moving.
PRECAUTIONS FOR MAINTENANCE
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