Assembly and function
56
Citan BAG0014.4 09.14
5.15
Exact harrow
The exact harrow (Fig. 32/1) covers the seed in
the seed furrows evenly with loose soil levels the
soil.
Adjustable functions
•
the exact harrow position for matching the
pre-set seed placement depth.
•
the exact harrow pressure. The exact har-
row pressure determines the working inten-
sity in relation to the soil conditions.
Set the exact harrow so that after seed coverage
no ridge of soil will remain in the field.
Fig. 32
The tensioning springs which provide the exact
harrow pressure are pre-tensioned with the aid of
a lever (Fig. 33/1).
The lever (Fig. 33/1) rests on a pin (Fig. 33/2) in
the setting segment.
The higher the pin is inserted in the hole group,
the higher the harrow pressure will be.
At the hydraulic exact harrow adjustment the
second pin (Fig. 33/3) is inserted as a stop
above the lever (Fig. 33/1) in the setting seg-
ment.
When – in heavy soil – the hydraulic ram is pres-
surised, the lever rests on the upper pin and
increases the harrow pressure.
When installed in the correct position, the exact
harrow is pinned to the holder tube in the middle
hole (Fig. 32/2).
Fig. 33
