Komatsu WB93R-5, Operation & Maintenance Manual

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USING THE MACHINE AS AN EXCAVATOR
149
3.13 USING THE MACHINE AS AN EXCAVATOR
WARNING
q
The machine can be used as an excavator only after rotating the seat by 180° with respect to the correct
driving position; for the specific procedure, see "3.13.2 POSITIONING THE MACHINE FOR DIGGING OP-
ERATIONS". The machine is equipped with an acoustic alarm that is activated if the operator, with the
engine running, shifts the reversing gear lever from the neutral position with the seat rotated and not in
the correct driving position.
This is a danger signal, since it is absolutely forbidden to move the machine while working with the
backhoe equipment or in any case with the seat rotated by 180° with respect to the regular driving posi-
tion.
Remember that the operator is allowed to move the machine only while seated in the correct driving po-
sition, with locked seat and fastened safety belt.
q
Always fasten the safety belt before starting any manoeuvre.
q
Always lower the stabilizers before starting any digging operation.
q
Before starting work, alert the persons in the vicinity by means of the horn integrated in the side dash-
board or in the left backhoe control lever, if the machine is equipped with backhoe servo controls.
3.13.1 POSITIONING THE BUCKET
ACCORDING TO THE WORK THAT
MUST BE CARRIED OUT
WARNING
q
When introducing the bucket connection pins in the
couplings of the arm and of the thrusting arm, be careful
to the metal chips that may come off and cause serious
injury.
q
Always wear safety goggles, thick gloves and helmet.
q
Avoid using your fingers to align the holes, since they
may be cut off in case of sudden or uncontrolled move-
ments.
BUCKET POSITIONS
Two position options are available for the bucket:
Pos. 1: suitable for normal digging operations, ensures more
power to the bucketnna.
Pos. 2: suitable for operations on vertical walls, ensures the
maximum swing and the maximum digging height on
walls. In this position the tearing force is reduced.
RWA00950
POS.
1
POS.
2
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