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10 unigreen
4.4 TRACTOR COUPLING
= The tractor must be equipped with a 1”3/8 ASAE DIN 9611/A at 550 rpm
power-takeoff capable of supplying the power necessary for operating the
machine.
= It must have a towing hitch (towed mistblowers with a towing eye or fork
drawbar) and a three-point elevator (for mounted machines and a steering
drawbar for towed machines) suitable for safely bearing the weight of the
mistblower.
= It must be able to tow the maximum overall mass of the machine.
All of the characteristics required are indicated in the fittings tables 14b-15b-
16b on pages 37-38-39 (the total mass is also indicated on the CE plate on the
machine).
WARNING: make sure there are no persons or things near the mistblower
before starting the machine and while you are using it.
4.4.1 DRAWBAR WITH TOWING EYE OR FORK
= Check that the weight on the hook can be supported by the tractor (the
maximum weights on the drawbar are indicated in the fittings tables 14b-15b-
16b on page 37-38-39)
= Hook the drawbar to the towing hitch adjusting the height of the same hook
so the tank of the sprayer is horizontal. You can also rotate the drawbar as
shown (FIG. 5).
= Retract the parking drawbar wheel (or foot) so it doesn’t get damaged
during work.
= Position the pressure regulator in a place where it is easy to reach from the
driver’s seat. Don’t carry liquids under pressure inside the cabin; use the
relevant electrical or cable controls for these tractors.
= Check that the pipes of the pressure regulator (or the electrical cables on a
pushbutton control panel) don’t get in the way and are positioned at a safe
distance from the cardan shaft and the wheels of the tractor.
= You must purchase the brake kit if the towed mistblower will be used on
hillsides.
4.4.2 STEERING DRAWBAR (COUPLED TO ELEVATOR)
= Check that the diameter of the elevator coupling pins coincide with the
tractor (adapter bushes are available on request).
= Check that the weight on the elevator can be supported by the tractor (the
maximum weights on the drawbar are indicated in the fittings tables 14b-15b-
16b on page 37-38-39)
= Check that the steering joint is lubricated with grease.
= Connect the drawbar to the elevator using the elevator control to keep the
tank of the sprayer horizontal.
= When you have connected the drawbar proceed as for the towing eye
drawbar.
4.4.3 STEERING DRAWBAR (TOWING EYE)
Special steering drawbars with a towing eye, homologated for road traffic, are
available on request and another manual is supplied with the instructions on
using this.
4.4.4 ADJUSTABLE HUBS
If the mistblower has adjustable hubs you can adjust the height of the machine;
to do this, lift the machine as explained in point 4.3, loosen the 8 axel fixing
screws, pull off the hub and position it in the desired position.
4.4.5 HYDRAULIC CONNECTION TO THE DISTRIBUTORS
Machines that need a hydraulic connection to drive the movements of the
cannon are equipped with 1/2", “Push-Pull”, quick-fit male couplings. You can
connect the pipes by simply pushing them in, making sure you:
- do so only with the engine turned off;
- lower any tools connected to the elevator of the tractor;
- carefully clean the two parts that will be coupled
Warning: the hydraulic cylinders used are the “Double Effect” type.
Consult the use and maintenance manual of the tractor.
FIG. 5
The parking wheel in the mistblower’s
work position.