Vaderstad NZ Aggressive NZA 600 Series, Original Instructions Manual

Page: 30 / 50

Instructions and adjustments
30 11.07.2011
ver. 2
3.11 Crossboard
3.11.1 Adjusting the front Crossboard
Adjust while the harrow is lowered to its work position in the field. Bleed the system prior to ad-
justment. See ”
4.11 Bleeding the hydraulic system for the Crossboard” on page 42 .
Adjust the piston rod ends until the Crossboard is at the same height across the entire harrow work
width.
The Crossboard on the centre section often need to be adjusted 5-10 mm downwards to be sure
that the tractor tracks will be filled with soil.
Screwing out the hydraulic ram raises the Crossboard and vice versa.
Do not screw out the piston rod end more than 20 mm. On the ram on which the depth scale is
mounted, the piston rod should not be screwed out more than 12 mm.
Make a habit of bleeding the hydraulic system each time the cultivator is hitched to the tractor be-
fore you start using it, and also a few times during the day when you are using the cultivator.
Bleeding the system takes only 10-15 seconds.
!
On the NZA 500-600, if the front Crossboard has been fully raised and the harrow is folded up
to the transport position, the tines may collide with the centre section of the harrow. To prevent
this, make sure the Crossboard is not fully raised prior to folding up the implement.
Figure 3.19 Figure 3.20