Komatsu WB93R-5, Руководство по эксплуатации и техническому обслуживанию

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APPLICATION OF THE OFFSET DEVICE
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6.7 APPLICATION OF THE OFFSET DEVICE
WARNING
q
When it is necessary to move the machine or travel on roads, the offset device must be positioned cen-
trally with respect to the boom axis.
q
To carry out digging operations on vertical walls, the fulcrum pin (1) of the revolving support (2) must be
perfectly vertical; be very careful to the position of this component when digging near walls and posts,
wells and underground lines.
q
When digging near walls, take care not to weaken foundations and cause collapses.
q
When working beyond the outline of the machine, make sure that the ground on which the stabilizers
and wheels rest is solid and the area is sufficiently far from ridges, banks, coasts: remember that in
these conditions the specific pressure on the ground always increases.
Reduce the loads and work at low speed, in order to ensure the stability of the machine.
6.7.1 DESCRIPTION AND CONTROL
The offset device is an integral part of the boom (3) and makes
it possible to carry out digging operations beyond the machine
outline.
If the offset device is in neutral position, the boom can be used
as a standard boom; if it is necessary to dig beyond the ma-
chine outline, the backhoe must be translated and the offset
device must be operated to reproduce the parallelism between
the arm (4) and the axis of the machine.
6.7.1.1 CONTROL (version with mechanically-
controlled backhoe)
The operation of the cylinder (5) that rotates the support (2) to
which the arm (4) is mechanically constrained is obtained by
means of an additional distributor controlled through a pedal
(6) installed on the left side of the backhoe control lever unit.
The movements of the levers described at point "3.3.6.1 pos.
18/19 - BACKHOE CONTROL LEVERS (version with me-
chanical controls)" remain unchanged.
The movements of the arm are as follows:
1 - Swing to the right, obtained by pressing the pedal (6) with
the toe.
2 - Swing to the left, obtained by pressing the pedal (6) with
the heel.
1
4
2 5
3
RWA03750
RKA14510
4
2
5
3
RKA14520
6
RKA15820
4
2 EDGE OF
THE WHEEL
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