Komatsu D31EX-21, Operation & Maintenance Manual, Page: 47 / 256

SAFETY
PRECAUTIONS FOR MAINTENANCE
2-29
q
Set safety lock lever (1) and parking lever (2) to the LOCK
position.
q
Put blocks under the track to prevent the machine from
moving.
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING
To prevent 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
Set safety lock lever (1) and parking lever (2) to the LOCK
position.
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
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.
q
Never drop or insert tools or other objects into the fan or
fan belt. Parts may break or be sent flying.
Free
Lock
Free
Lock
Block
Free
Lock
Free
Lock