Komatsu Utility Avance WB91R-2, Operation & Maintenance Manual

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268
ARRANGEMENT FOR THE INSTALLATION OF THE CLAMSHELL BUCKET
6.9.2 INSTALLING THE CLAMSHELL
BUCKET
DANGER
•
The machine must be parked on flat ground, with the front
equipment resting on the ground.
•
When the coupling pins are removed or installed, chips
may come off; always wear gloves, safety goggles and
helmet.
•
The change of the equipment must be carried out by two
operators, who must decide together the words and sig-
nals to be used during operations.
•
Do not use your fingers to center the holes, since they
may be injured or even cut.
•
Release the residual pressure that may be present in the
pipes completely.
To install the revolving clamshell bucket, proceed as follows:
1 - Remove the standard bucket from the backhoe (See “3.13.5
CHANGING THE BACKHOE BUCKET”).
2 - Retract the bucket control piston completely.
3 - Connect the clamshell bucket to the arm.
4 - Stop the machine and move the controls in all directions to
release the residual pressures.
IMPORTANT
☞
•
If the machine is equipped with backhoe servo controls,
to release the residual pressure from the machine circuits
it is necessary to supply power to the electric circuit, by
turning the ignition key to position «I».
Release the backhoe control locking device, see “3.3.6.2
MACHINE CONTROLS (Version with servo controls)” pos.
27 and operate the controls.
After releasing the residual pressure from the circuits
completely, turn the ignition key to position «O».
5 - Mechanically lock the standard bucket thrust lever, in such a
way as to lock the piston at the end of its stroke.
RWA38120
RWA38130
RWA01960
RWA02000