GASPARDO M Empleo Y Mantenimiento página 38

ENGLISH
fig. 30
3.10.3 ROW MARKER ARM ADJUSTMENT
Row marker with trace on the tractor wheel
See Fig. 30 and observe the following rules for correct row market
arm adjustment:
L = D (N +1) - C
where:
L= the distance between the outermost element and the row
marker;
D= the distance between the rows;
N= the number of elements working;
C= the tractor's front track width
Example:
D= 13 cm (inch. 5); N= 23 elements; C= 150 cm (inch.59);
L = 13 (23 + 1)-150 = 81 cm
Row marker with trace in the centre of the tractor
See Fig. 31 and observe the following rules for correct row market
arm adjustment:
L = D (N +1)
where:
L= the distance between the outermost element and the row
marker;
D= the distance between the rows;
N= the number of elements working;
Example:
D= 13 cm (inch. 5); N= 23 elements.
L = 13 (23 + 1) = 156 cm
Proceed as follows for adjustment:
- Loosen the bolt (Fig. 32 C, D).
- Lengthen or shorten the stroke of the disk arm until the desired
length is reached.
- Tighten the bolt (Fig. 32 C, D).
Remember that for very low L values (distance between the
external-most piece and the row marker) the arm may be
inverted from position (1) to position (2) as shown in Figure 33.
For normal soils the correct working position of the disc is that
shown in Fig. 34 ref. A; for strong soils turn it over as shown in
ref. B Fig. 34.
38
USE AND MAINTENANCE
C
L
D
2
2
2
2
fig. 31
fig. 32
(2)
fig. 33
Avanzamento
Advancement
Avancement
fig. 34
g
L
D
C
D
(1)
A
B
cod. 19501113