Vaderstad Rapid RDA 400S Original Instructions Manual page 37

3.13.2 System Disc
Figure 3.31
The System Disc pre-implement has normally been reset at the factory.
Similar to the lifting system, the pre-implement is connected to a master and slave system. Prior
to adjusting the pre-implement, bleed and reset its hydraulic system in the same was as the lifting
system. See "3.10 Hydraulic adjustment of sowing depth (option 15582-)" on page 31. Bleeding
the system should be done with the drill in the work position and the System Discs completely
raised to enable the hydraulic rams to extend fully to the outermost positions.
Then verify the basic adjustment of the pre-implement while hitched to the tractor and the drill
folded out, resting on the seed boxes on level ground. If necessary, adjust the piston rods (A) to
achieve the same height setting of all discs. Loosen the counter-nut (B) while turning the piston
rod and the hydraulic ram in place. The piston rods can be adjusted to a maximum extension of
the thread (C) to 20 mm.
Fine adjustment is then performed in the field by adjusting the piston rods (A) until all sections
work at the same depth.
Adjust the angle of the front disc row in relation to that of the rear row using the hole series in the
parallel iron bar (D).
frame once adjustment is completed.
27.06.2011
ver.2
D
Always make sure that the parallel iron bars do not interfere with the
NOTE!
RDA 400S
37