fig. 31a
c XI
USE OF IMPLEMENTS
F 240
28
Winch
(fig. 31)
The winch is made of a drum (pos.
1
) that can rotate by means of a hydraulic
engine (pos.
2
), on a structure (pos.
3
) fixed on the crane (i.e. under the outer
boom). The rotation of the drum on which the cable winds is achieved by a
hydraulic motor (pos.
2
) connected to the circuit by means of hoses; in case
of fittings or hoses brake the stop of the rotation is guaranteed by a safety
check valve (pos.
4
). A parking brake integrated to the
motoreducer group prevents the rotation on the drum
(held of the winch load in position), when the control func-
tion is not activated (distributor lever in neutral position).
The winch is identified by a plate (fig. 31a) indicating the
essential data and fixed by the manufacturer:
Manufacturer mark ...
Winch type ...
Serial number ...
Maximum line in N at the 4th layer...
Maximum speed in m/min ...
(!)
See operator winch manual supplied by the winches’
manufacturer.
The winch has a maximum capacity, indicated by a plate,
not related to the crane capacities which can also be lower.
Consequently avoid to lift, with the winch, heavier loads than those allowed by
the crane capacity plate.
Do not rotate the crane before the load is lifted, rotate slowly and with care the
suspended load checking the stability of the vehicle.
(!) WARNING (!)
On winches not equipped with pressafune, check the rewinding of the cable
on winch drum proceeds regularly and without overlapping: it is suggested not
to rewind the cable if it is not sufficiently taut.
(!) ATTENTION (!)
It is necessary to avoid, otherwise the cable could be damaged, that:
—
in the lifting with the winch or in the booms extension rams exit (crane
or hydraulic extension) the cable hook (or the block) takes contact with
the pulley structure;
—
in the unwinding the cable is completely wound from the winch drum
(three turns must be wound at least), causing the controls quiescing.
Hydraulic connections between implements and hoses fitted on
extension booms section.
(Fig. 32)
(!)
In case of hoses connection to implements through
coupling unions it is necessary to verify that there is
no trace of soil, curt etc. on the unions and inside
the seats so as to avoid the oil contamination and
consequently wear the tightening surface of unions.
(!) WARNING (!)
To ensure that the control corresponds to the imple-
ment movement, hydraulic connections are symmetri-
cally fitted with coupling unions. Never invert such
positions: movements inversion as well as operating difficulties could occur.
fig. 31
1
2
4
3
fig. 32
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