Komatsu WB93R-5, Operation & Maintenance Manual

Page: 102 / 284

INSTRUMENTS AND CONTROLS
100
8 - BACKHOE BOOM LOCKING BUTTON
WARNING
q
Always engage the boom safety lock when the backhoe
is not going to be used and when travelling on roads.
This switch automatically returns to position OFF and is used
to couple the boom to the safety lock (A).
When it is in rest position (LED off), the backhoe is free and
can move without any interference with the lock.
The button is in this position even when the boom is connect-
ed to the safety lock.
To engage the safety lock, proceed as follows:
Fold the arm and the bucket. Press the button (8) (LED on) to
raise the safety lock and keep it pressed. Lift the boom com-
pletely and release the button (LED off) to engage the safety
lock to the boom.
Before moving the machine, make sure that the lock is proper-
ly positioned in its seat.
IMPORTANT
q
The button (8) loses its specific function when the safe-
ty button (B) is in locking position.
For further details, see "3.3.2 pos. 12 - SERVO CON-
TROL LOCKING BUTTON".
RKAB4460
B
8
RKAB3210
A
RKAB3220
A
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