GASPARDO NINA Empleo Y Mantenimiento página 40

ENGLISH
3.5 ROW MARKER DISK ADJUSTMENT
The row marker is a machine that traces a reference line parallel
to the tracks of the tractor on the ground.
Once the tractor has completed its run and it has turned around,
follow the reference row with one of the front wheels (Fig. 23) or
with the centre of the tractor (Fig. 24) according to the row marker
employed.
The row marker arms reverse themselves independently and this
reversal is actuate by the comand of the oildynamic distributors
of the tractor.
The inversion of the row-marker arms is moved by means of a
control on the seeder.
For a correct working, every fl exible connecting pipe, from the row
marker equipment to the tractor, must be engaged to a simple effect
oildynamic distributor. When the system is not in use, protect the
quick coupling with its cap.
On request can be furnished a valve for the automatic reversal of
the arms by a single oildynamic distributor of the tractor. The valve
plant is integrated with unidirectional fl ow regulators (Fig. 23), which
allow to adjust the oil quantity in opening or closure, in accordance
with the direction of their assemblage.
Flow from A to B, free (Fig. 25);
Flow from B to A, choked (regulated) (Fig. 25).
o regulate, loosen the lock nut (1) and turn the knob (2). Once this
adjustment has been made, re-tighten the lock nut.
WARNING: Make sure that the result of this adjustment does
not cause the rising or descent speed to damage the structure
itself. Never exceed the maximum admissible pressure for the
hydraulic system.
Safety measures concerning the hydraulics
1) At the moment of connecting the hydraulic tubes to the
hydraulic system of the tractor, make sure that the hydrau-
lic systems of the operating machine and the tractor are
not under pressure.
2) For the operative hydraulic connections between tractor
and operating machine, the sockets and plugs should be
marked with colours to distinguish them, to avoid them
being used wrongly. There would be a danger of accident
if the connections were to be swapped round.
3) The hydraulic system is under high pressure; because
of the accident risk, when searching for leakage points
special auxiliary instruments should be used.
4) Not to never carry out the search losses with the fi ngers
or the hands. The liquids that exit from the holes can be
nearly not visible.
5) During transport by road the hydraulic connections betwe-
en tractor and operating machine should be disconnected
and secured to the support provided.
6) Do not use vegetable oils under any circumstance. These
could cause a risk of damage to the cylinder gaskets.
7) The operating pressures of the hydraulic system should
be between 100 bars and 180 bars.
8) Never exceed the indicated hydraulic system pressure
levels.
9) Check that the quick hook-ups are coupled correctly; parts
of the system could get damaged if they are not.
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USE AND MAINTENANCE
fi g. 23
fi g. 24
B
1
fi g. 25
10) Oil escaping at high pressure can cause skin injury with
the risk of serious wounds and infection. Call a doctor
immediately if such an incident occurs. If the oil with sur-
gical means is not removed quickly, can take place serious
allergies and/or infections. Therefore, the installation of
hydraulic components in the tractor driver's cab is strictly
forbidden. All the components of the system should be
positioned carefully to avoid parts being damage during
use of the equipment.
11) In case of participation on the hydraulic system, to un-
load the hydraulic pressure carrying all the hydraulic
commandos in all the positions some times after to have
extinguished the motor.

C
L
D
L
D
B
2
cod. G19502553