Gaspardo SP DORADA, Use And Maintenance

Page: 50 / 154

USE AND MAINTENANCE
50
ENGLISH
cod. 19501381
-
3.14 ROW MARKER
The row marker is a device which tracers reference line on the
ground parallel to the direction of the tractor. When the tractor will
have finished its run and inverted its course, it will proceed with
one of the front wheels on the reference line (Fig. 30). At each
new passing the seeder will trace a reference line on the opposite
side of the previous one. Row marker arm inversion is activated
by the tractor’shydraulic distributor control. If requested it’s
possible to convert the row marker from hydraulic to mechanical.
3.14.1 HYDRAULIC ROW MARKER
The planting unit has a hydraulic row marker control device. The
plungers should be connected by their hydraulic pipes to the
ancillary hydraulic distributors of the tractor. Inside the hydraulic
cylinder boss there is a calibrated grub screw that could be
clogged by impurities in the oil. If there is malfunctioning, remove
the nipple and clean the hole of the calibrated grub screw, and
then put everything back paying attention to the direction of insertion
of the grub screw in the boss. On request, the hydraulic row
marker device can be fitted with a valve that alternately operates
the two arms.
In this case just one hydraulic tractor distributor is sufficient. When
the system is not in use, protect the quick coupling with its cap.
(Fig. 31).
Safety measures concerning the hydraulics:
1) When the hydraulic pipes are connected to the hydraulic
system of the tractor, make sure that the hydraulic systems
of the operating machine and the tractor are not under
pressure.
2) For hydraulic-type functional connections between the
tractor and operating machine, sockets and plugs must be
marked with colours, in order to prevent errors. It could be
dangerous if they were accidently confused.
3) The hydraulic system is under high pressure; due to the
risk of accident suitable auxiliary instruments should be
used when investigating possible leakage points.
System regulation:
The hydraulic systems provided come equipped with one-way
flow regulators (Fig. 32) which allow for the regulation of the
quantity of oil during opening or closing, depending on how the
regulators have been installed:
Flow from A to B, free;
Flow from B to A, choked (regulated).
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
.
fig. 31
fig. 30
fig. 32
L
D
C
D D D
(B)
1
2
(A)