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3.14 ROW MARKER
3.14.1 ROW MARKER FOR A RIGID FRAME
The row marker is a machine that traces a reference line parallel
to the tracks of the tractor on the ground. When the tractor finishes
a row and makes a U-turn, the front wheel will align one of the
front wheels with this reference line (Fig. 38). Each time it passes,
the seeder will mark a reference line on the side opposite to the
previous passage. Row-marker arm inversion is activated by the
tractor's hydraulic distributor control. When the system is not in
use, protect the quick coupling with its cap.
When travelling by road, turn the row-marker discs inwards
towards the machine (Fig. 39).
ROW MARKER DISC ADJUSTMENT
Attach the disc holding sleeve (1, Fig. 40) onto the two arms of
the row marker, without over-tightening the nuts, insert the disc
and secure it in place by means of the snap pin. Using the table
2 shown, read the distance (L, Fig. 38) at which the disc is to
draw the reference line. Regulate the disc at the correct distance,
tilt it slightly and firmly tighten the nuts (Fig. 40).
For distances not covered by the table, use the following rule:
L= D (N +1) - C
L= the distance between the outermost unit and the row marker.
D= the distance between the rows.
N= the number of units operating.
C= the tractor's front wheelbase.
Example: D = 45 cm; N = 7 units; C = 150 cm
L = 45 (7 + 1) - 150 = 105 cm
For normal soils the correct working position of the disc is that shown
in Fig. 41 ref. A; for strong soils turn it over as shown in ref. B Fig. 41.
The row marker disk may be equipped with a depth limiter (C,
Fig. 41), which is particularly useful for light soils, reducing the
risk of damage to the row marker itself.
cod. G19502113
WARNING
2
2
USE AND MAINTENANCE
fig. 38
fig. 39
Table 3
fig. 40
Avanzamento
Advancement
Avancement
fig. 41
g
C
D
L
D
D
1
nr 17
A
B
ENGLISH
D
C
61
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