Gaspardo ELEFANTE, Use And Maintenance

Page: 66 / 148

USE AND MAINTENANCE
66
ENGLISH

cod. G19502800
+
_
A
B
A
C
fi g. 49
fi g. 50
1
2
4
3
3
fi g. 47
fi g. 48
4.8.2 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. 47):
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. 48):
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).
4.9 SEED COVERING HARROW
The working pressure of the spring teeth of the seed-covering
harrow may be varied by rotating the spring on the upper parallel
arm (A, Fig. 49).
When the arm pins (B) on the
fi ve holes are shifted, the clearance
angle of the spring teeth varies (Fig. 49).
If necessary, it is possible to exclude the seed-covering harrow by
following these simple instructions.
Having fully released the compression springs on the upper arms
(A, Fig. 50), raise the seed-covering harrow sections and lock into
position using the pins (C, Fig. 50). Block the pins with the safety
nuts.