Vaderstad NZ Aggressive NZA 600 Series, Original Instructions Manual

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Instructions and adjustments
22 11.07.2011
ver. 2
3.2 Verifying the drawbar eye of the implement
Figure 3.2
The implement has a reversible and replaceable drawbar eye. Side A of the drawbar eye is intend-
ed for connecting a hitch hook, while side B is intended for connecting an agricultural drawbar.
Be sure to replace the drawbar eye when excessively worn. The figure shows the minimum rec-
ommended drawbar eye dimensions. Also inspect the bolted joint of the drawbar eye.
NOTE! Incorrect drawbar eye welding may drastically reduce its durability. We always recom-
mend regular replacement of the drawbar eye!
3.3 Switching between transport and work positions
The NZA 500-1000 uses a common hydraulic circuit for wing folding and Crossboard operation.
In the raised position, the circuit controls wing folding, while in the lowered position, the circuit
controls Crossboard operation. A reversing valve ensures that the correct function is active.
The harrow features automatic locking and unlocking of the wings.
3.3.1 Switching to the work position
1 Completely raise the harrow.
2 Make sure the Crossboard is not lifted to the maximum. If it is, there is risk that it will impact
with the centre section of the harrow. Applies to NZA 500-600.
3 Apply hydraulic pressure to the folding ram. The locking device is unlocked automatically and
the wings are folded down.
4 Lower the harrow to the ground.
3.3.2 Switching to the transport position
1 Completely raise the harrow.
2 Apply hydraulic pressure to the folding ram. The wings are then folded up and the locking de-
vice is automatically engaged.
Min. 24 mm
Min. 24 mm
A
B