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.
Do not leave the operator's seat during maintenance.
• 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 regeneration
disable of KDPF according to “HANDLE Komatsu Diesel
Particulate Filter (KDPF) (3-121)”.
• Lower the dump body completely, set dump lever (1) to
“HOLD” position, lock with dump lever lock knob (2) to pre-
vent the dump body from moving.
• Set parking brake switch (3) to “PARKING” position to ap-
ply the parking brake, then put blocks in front of and be-
hind the tires to prevent the machine from moving.
• Do not touch any control levers. If any control lever must
be operated, give a signal to the other workers to warn
them to move to a safe place.
PRECAUTIONS WHEN INSTALLING, REMOVING, OR STORING ATTACHMENTS
• Appoint a leader before starting removal or installation operations for attachments.
SAFETY PRECAUTIONS FOR MAINTENANCE
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