Komatsu WA500-6H, Operation & Maintenance Manual, Page: 59 / 412

Safety 2.4 Precautions for maintenance
WA500-6H – VEAM430100
2-33
z Lock the front and rear frames with safety bar (4).
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 run-
ning, carry out the operation with at least two workers and do as
follows.
z
One worker must always sit in the operator’s seat and be
ready to stop the engine at any time. All workers must main-
tain contact with the other workers.
z
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.
z
Never drop or insert tools or other objects into the fan or fan
belt. Parts may break or be sent flying.
z
Set work equipment lock lever (1) to the LOCK position to
prevent the work equipment from moving. Then set parking
brake switch (2) to the ON position to prevent the machine
from moving.
z
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.
GK050019
Lock
Free
4
GK032076
GK050006
1
Free
Lock
GK050015
2