Komatsu H75051, Operation & Maintenance Manual

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• Set frame lock bar (4) to LOCK position (L) to lock the front
and rear frame.
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.
• Rotating parts such as the fan, fan belt are dangerous that
they may easily catch a body part or an object someone
wears. Be careful not to come close to the rotating part.
• Never drop or insert tools or other objects into the fan, fan
belt, or other rotating parts. They may contact the rotating
parts and break, and be scattered. It is dangerous.
• If the automatic active regeneration of KDPF starts during
maintenance work, surroundings of KDPF become high
temperature.
When performing maintenance work, perform the after-
treatment devices regeneration disable according to “HAN-
DLE Komatsu Diesel Particulate Filter (KDPF) (3-124)”.
• Lower the work equipment to the ground and press work
equipment lock switch (1) to lock the work equipment (pilot
lamp lights up) and prevent it from moving.
• Set parking brake switch (2) 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.
• Do not touch the control levers or steering system. If it is
necessary to operate the control lever or steering system,
always give a signal to your fellow workers and have them
take refuge to a safe place.
,&
SAFETY PRECAUTIONS FOR MAINTENANCE
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