Gaspardo Direttissima 250, Use And Maintenance

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USE AND MAINTENANCE
21
ENGLISH
cod. 19501310
g
3.2.5 ADJUSTING THE SEEDING DEPTH
FOR ELEMENTS WITH CAST IRON WHEELS
To obtain a good level at which sprouts come out, the seed needs
to be placed at the right depth into the seeding bed.
The depth of the seed placement correctly determined when the
ballast on the side of the disck leans on the ground (1 Fig. 12).
Important! Before seeding always make sure that the machine
places the seeds at the desired depth.
There are 2 ways to mache adjustments:
a) By modifying the relative position between colter depositor
and furrow opener disk, acting on the colter fastening screws
(3 Fig. 12) and moving it to the desired height (2 Fig. 12).
IMPORTANT: The inferior hedge of the coulter should never
be adjusted deeper than the internal profile of the toothed
disk (that is: all inner side of the coulter should always lay
against the disk when this is rotating) (Fig. 12). When
tightening the screws, make sure they are tightened evenly
so that the cutting edge of the colter adheres perfectly to the
disk surface without interfering with its rotation.
b) OPTIONAL: By assembling a supplementary ring on the side
ballast, to reduce the depth of the seeding, the ring is to be
fixed to the 4 holes already set on the ballast.
ADJUSTING THE POSITION SPRINGS
1) Each adjustment must be made on the field with an average
load of the machine.
2) With the tractor moving in forward direction, place the
machine in the operating position with the discs sunk into the
ground.
3) Check that the element is in an intermediate stroke position (
Fig. 13).
3.4.2 SEED PRESS WHEEL ADJUSTMENT
The purpose of the press wheel, thanks to its spring load system
is toclose the seeding furrow right after the seed has been placed
this operation may vary according to different tactor such as:
-
type of soil (light, compacted, huthd or dry)
- amount and rind of residues on the ground
- seeding speed, etc.
therefore the down pressure must be registered carefully. The
action of the press wheel may be adjusted as follows (Fig. 14):
A) modifying the tension of the spring (1).
B) modifying the space between the wheel and the seeding
furrow by changing the position of the spacer (2).
WARNING
If necessary, adjust the backlash of the rear seed covering
wheel periodically by carrying out the following operations (Fig.
14):
C) loosen the lock nuts (3);
D) carefully tighten the screws (4) by checking the
backlash of the rear seed covering wheel;
E) tighten the previously loosened lock nuts (3).
fig. 13
=
=
1
2
4
3
fig. 12
3
4
2
fig. 14
1
3
4) If necessary adjust all the position springs by means of the
nut (4 Fig. 14) until you reach the position described at point
(3).
5) Make sure that the machine is operating with a horizontal
frame; only in that position can the machine load be equally
distributed between the two series of seeding elements.
To assure the correct operating position of the machine, check
the arm length of the third point for a carried machine (1, Fig. 15);
Finally, it is recommended to further load the springs of the
elements which operate behind the tractor wheels and to stretch
the chains or the side tie rods of the three point attachment well,
to give stability to the machine.
WHEN AND HOW TO BALLAST THE FRAME
When the ground is very hard and the position springs are very
compressed there is the risk that the total strain of the springs,
raise the frame up to the point that the drilling units arms get to
the inferior end of the run. This situation makes it impossible for
the machine to follow the depression in the ground because the
drilling units no longer have downward amplitude. In this case:
a) reduce the compression of the springs.
b) or ballast the frame with 1 or 2 crop ends square rod to inert
and fix in the frame.