Important; Hydraulic System; Harrow Opening/Closing - breviglieri teknofold 450 Manuel D'utilisation Et D'entretien

teknofold 450
▪
Make sure that the seed drill is correctly mounted, that it
lifts in the right way and that nothing interferes with the
hydraulic pipes.
▪
Make sure that the mechanical parts of the seed drill do
not interfere with the roller of the machine or with the
machine itself.
▪
Make sure that when you drive along the public roads,
there are no sharp parts that project from the sides of the
machine.
▪
Make sure that the relative signs are clearly visible behind
the combi machine. If this is not the case, proceed as
required by the Highway Code regulations in force in the
country where the machine is used.

IMPORTANT

When transporting on public highways, the seeder hopper
must always be completely empty.

4.5 HYDRAULIC SYSTEM

CAUTION
After having carried out the preliminary operations in the
correct way, i.e. hitched to the three points of the tractor and
engaged the driveline, the pipes of the hydraulic circuit must
be connected to the relative hydraulic taps on the tractor in
order to allow the various components of the implement to
operate.
KEY Fig. 6 (Roller hydraulic system closing and opening
MAXIMUM PRESSURE 2600 psi
A. Control cylinders opening/closing harrow
B. Hydraulic closing and opening system
C. Sequence valve
D. Locking valve
E. Speed control
F. Fast Clutch
Fig. 6
harrow)
KEY Fig. 7 (Roller hydraulic system closing and opening har-
row , rollers hydraulic adjustment)
MAXIMUM PRESSURE 2600 psi
A. Control cylinders opening/closing harrow
B. Hydraulic closing and opening system
C. Sequence valve
D. Locking valve
E. Speed control
F. Fast Clutch
G. Cylinder roller adjustment
H. Flow separetor
KEY Fig. 8 (Roller hydraulic system closing and opening
harrow , rollers hydraulic adjustment and hydraulic system
MAXIMUM PRESSURE 2600 psi
A. Control cylinders opening/closing harrow
B. Hydraulic closing and opening system
C. Sequence valve
D. Locking valve
E. Speed control
F. Fast Clutch
G. Cylinder roller adjustment
H. Flow separetor
I. Cylinder floating

4.6 HARROW OPENING/CLOSING

The opening and closing movements of the two harrow units, i.e.
opening during the work phase and closing when the machine is
transported on the road, are hydraulically controlled by means
of two cylinders (8 Fig. 1).
Both hydraulic cylinders are equipped with a block valve which
instantly shuts off the oil flow and, consequently, the machine in
the position it has reached, if one of the hydraulic pipes bursts.
The cylinders also have a flow valve which regulates the speed
- 28 -
1 1
Fig. 7
2 2 1 1
Fig. 8
floating)