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8.3
MACHINE ADJUSTMENT
8.3.1
ADJUSTMENT OF THE HARROW DISKS' WORKING DEPTH
The working depth of the harrow disks may be adjusted using the tractor's three point hitch
or the mechanical or hydraulic shaft adjustment mechanism.
In case of the mechanical adjustment the depth is adjusted by changing the length of the
turnbuckles.
In case of hydraulic depth control the adjustments are made using the hydraulic control
levers inside the tractor's cabin by changing the number of pressure plates of the actuators placed on
the piston rod (fig. 5 -
item A
).
8.3.2
WORKING DEPTH AND TINE ANGLE ADJUSTMENT
The adjustment of the tine working depth is performed using pins placed in appropriate
openings in the plough frog secured with a cotter pin (fig 5. -
item B
).
The angle may be adjusted using the lower scraper attachment pins (fig. 5 -
item C
).
Fig. 5.
Machine operation adjustment.
WARNING - Remember to always check the positioning of unused pressure plates of the
hydraulic actuator to avoid damaging the hydraulic adjustment system.
8.4
OPERATION OF THE MACHINE
Before commencing fieldwork using the machine it is required to:
•
remove the warning markings,
•
disconnect the coupling rod 1 (fig. 1), then unfold the machine to its working position,
•
lower the tractor's lift and set it to floating mode, set the machines working depth,
•
lift the undercarriage to the maximum so that the wheels are lifted off the ground.
If during operation the machine becomes clogged with vegetation remains it must be cleared
by raising the machine for a moment using the tractor's hydraulic system.
Hydraulic adjustment
Mechanical adjustment