4
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During the work, the machine must be lowered to the working depth and left with the set
control hydraulics. The horizontal position of the power harrow can be corrected by
means of the upper link.
-
The machine must be lowered slowly in order to avoid damage to the tools and
attachments.
-
The areas to be tilled should be inspected for visible large obstacles before staring so that
they can be removed from the harrow’s range and thus prevent damage to the tines and
drive elements.
-
Now connect the power harrow to the tractor by means of the three-point suspension.
Secure the bolts of the upper and lower links with spring pins. Park the tractor on level
ground and adjust the upper link so that the power harrow is horizontal.
-
Examine tools (tines) and tine carriers for signs of wear and ensure they are secured
correctly.
*
Working with the rotary harrow
*
Attachment to the tractor
-
Check that the support crumbler and three-point frame are correctly secured to the
housing.
-
Before engaging the cardan shaft, carefully clean and grease the p.t.o. shaft of the tractor
and power harrow. Then slide the cardan shaft over the p.t.o. shaft until the locking pin
engages completely. The friction clutch of the cardan shaft must be mounted at the
machine end.
-
The working depth is now adjusted with the aid of the hand spindle in accordance with
ground condition on a firm and level substrate or by lifting the unit completely.
The power harrow with fitted tools and attachments is now ready for use.
-
Now adjust the length of the cardan shaft to match your tractor. For this purpose, hold the
two halves of the cardan shaft side-by-side in the shortest lift-out position and mark it
accordingly. Shorten the inner and outer protective tube by equal amounts. Then shorten
the inner and outer sliding profile by the same amount as the protective tube. Finally round
off the cut edges and carefully remove all chips. Grease the sliding profiles.
-
The tractor p.t.o. shaft must not be switched on until it is certain that the shaft will rotate at
not more than 540 rpm at maximum engine speed.
-
The p.t.o. drive must not be engaged when the tractor drives running at full load.
-
The power harrow may only be started and stopped from the tractor driver’s seat.
-
The power harrow may only be switched on when there is no-one within its range of
operation and hazard area (radius of 10 m from the rotary harrow) due to the risk of
objects, such as stones, being hurled away from the machine. The duly prepared machine
must be lowered to the working position before it is switched on. The power harrow can
then be switched on.
3
The three-point frame is made of tubular structure and bolted onto the housing.
Each tine unit comprises a rotor shaft, two boron steel blade, bearing housing, gear,
bearing and connecting elements. The blades are mounted underneath the rotor shaft
and serve to loosen the soil. They are secured by means of special bushings, washers,
bolts and lock nuts.
The housing accommodates the various components making up the power harrow. The
support crumbler, three-point frame, and tine units are bolted onto the housing.
* Before using the machine for the first time
-
Read through the operating instructions for the power harrow and additional attachments
and ensure that you are fully familiar with the mode of operation of all units.
-
Check that the length of the p.t.o shaft fits your tractor. The p.t.o shaft should include an
appropriate protective mechanism!
3. Start-up and operation of the machine
FIG. 2