Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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PRECAUTIONS FOR MAINTENANCE
SAFETY
2-36
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING
To prevent personal injury, do not carry out maintenance with the engine running. If maintenance must be carried
out with the engine running, carry out the operation with at least two workers and do as follows.
q
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.
q
When carrying out operations near the fan, fan belt, or
other rotating parts, there is a hazard of being caught in the
parts, so be careful not to come close.
q
Never drop or insert tools or other objects into the fan, fan
belt, or other rotating parts. There is danger that they may
contact the rotating parts and break or be sent flying.
q
Release the residual pressure from the hydraulic system,
and place Lock lever (1) to its LOCK position. For releasing
of the residual oil pressure, see the METHOD FOR
RELEASING INTERNAL PRESSURE IN HYDRAULIC
CIRCUIT (4-60)“.
q
Do not touch the control levers or pedals. If it is necessary
to operate the control levers or pedals, always give a signal
to your fellow workers and have them move to a safe
place.
INSTALLING, REMOVING, OR STORING ATTACHMENTS
q
Appoint a leader before starting removal or installation
operations for attachments.
q
Place attachments that have been removed from the
machine in a stable condition so that they do not fall. And
take steps to prevent unauthorized persons from entering
the storage area.
PRECAUTIONS WHEN WORKING AT HIGH PLACES
When working at high places, use a step ladder or other stand to ensure that the work can be carried out safely.