ate as soon as the obstruction has been passed, without external
intervention. Any clutch servicing operations must be carried out
in the workshop in compliance with the driveline manufacturer's
instructions.
Do not allow the machine to operate unless it digs into the
soil. When working, do not drive around bends with the ma-
chine in the soil. Do not work in reverse. Always raise the
implement before you change direction or reverse.
During transport or whenever the machine must be lifted,
remember to adjust the power lift of the tractor so that the
machine hoe is not raised more than about 16" in. from the
ground.
Do not drive on the public roads with the machine caked with
soil, grass or other materials that could dirty the road sur-
face or hamper the traffic in any way.
Do not allow the machine to drop violently on to the ground.
Lower it slowly to allow the tines to gradually penetrate into
the soil otherwise all the machine components would be sub-
jected to stress that could lead to breakages.
4.4 COMBI MACHINE WITH SEED DRILL
(Fig. 8-9)
Be very careful when coupling the machine with a seeder and in
the case of rear installation of hydraulic or mechanical seeder
couplings.
Each hydraulic seed drill coupling supplied with the machine or at
a later date on the Customer's request, has a serial number and
instruction manual where all the specifications for assembly and
use are given.
In the event however of the seeder coupling being fitted by the
end user, remember to:
- Once the frame has been mounted on the machine, in order to
raise the seed drill with the seeds, the overall weight of the
combination must not exceed the value given in the operation
and maintenance manual.
- 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 inter-
fere 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 SEEDER COUPLING HYDRAULIC
SYSTEM (FIG. 13-14)
Said system relates to hydraulic seeder coupling (if fitted to the
machine)
After correctly fitting the coupling on the machine, to check cor-
CAUTION
CAUTION
mekfarmer 100v
rect lifting operation, connect the coupling hydraulic pipe to the
tractor pickup and pressurise so as to permit operation of the struc-
ture above the machine.
Perform this operation empty, twice or three times, making sure
everything is working properly and that there are no mechanical
or hydraulic impediments. Before performing these operations,
make sure no one is standing near the machine.
Seeder coupling drop is spontaneous if there is no pressure in the
system because the cylinder is single acting.
It features a stop valve in the event of sudden breakage of the
pipe.
KEY Fig. 13 (Hydraulic diagram for coupling the seeder to an
hydraulic cylinder);
1 - Seeder coupling control cylinder.
2 - Stop valve.
3 - 3/8" gas hydraulic pipe
4 - Protection sheath.
4.6 WORK DEPTH ADJUSTMENT
Harrow work depth adjustment can be made in various ways:
1) By means of side pins (standard - Fig. 12).
This solution not only permits depth adjustment, but also hav-
ing a floating rear roller (ideal when there are stones).
2) With screw jacks (Fig. 13).
This solution requires two screw jacks at the ends of the ma-
chine and adjustable by means of a graduated rod. When the
roller is raised, working depth increases. When the roller is
lowered, working depth decreases.
4.7 IN WORK
Begin work with the PTO at full rate. Gradually dig the implement
into the ground. Do not depress the accelerator pedal too much
with the PTO engaged.
To break up the soil to the required degree, you must consider
several factors, i.e.:
- the nature of the soil (medium consistency, sandy, clayey, etc.)
- the work depth
- the ground speed of the tractor
- optimum machine adjustment.
Soil crumbling is obtained at a low tractor ground speed, with the
rear bar lowered and the blades spinning at 300 rpm. Besides
holding back the clods already broken up by the blades, the rear
bar also obtains a well levelled and uniform surface after the soil
has been worked.
4.7.1 HOW TO WORK
Adjust the roller (8 Fig. 1) to suit the degree to which the soil must
be crumbled, engage the PTO and begin to move forward with
the tractor, progressively lowering the implement.
Cover a short distance, then check to make sure that the work
depth, soil crumbling and ground levelling operations have been
carried out in the required way.
The speed of the tractor when the machine is operation must
not exceed 3-4 mph or components could be broken or dam-
aged.
The blades may throw up stones or other sharp objects as
they spin.
Constantly check to make sure that there are no bystanders,
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CAUTION
DANGER