Komatsu PC22MR-3, Operation & Maintenance Manual

Page: 109 / 312

FUNCTIONING
INSTRUMENTS AND CONTROLS
3-21
(7) Boom swing control pedal locking device
WARNING
Always shift the safety lever to position (L) when the boom
swing is not required, during travel and when parking the
machine. If the control pedal is inadvertently pressed, this
may cause serious accidents.
This device is used to lock the movements of the boom swing
control pedal and has two positions.
(F): free
(L): locked
(8) Boom swing control pedal
This pedal controls the boom swing to the right and to the left,
according to the movements indicated below.
(a): swing to the right
(b): swing to the left
N (Neutral): The boom stays in stop position.
NOTICE
q
When the safety lever is in the “locked” position, all
the movements are inhibited (see "Control locking
safety lever (3-17)").
q
The boom swing is useful to displace the digging line
beyond the track outline; do not use this function
during the work cycle.
a
b
N
WEAM014500