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Boom Wings Forward
The boom wings are adjusted from factory to tip a little forward in the
driving direction, when the boom is completely unfolded.
This will help the boom wings stay in front of, or aligned with, the boom
centre during spraying, as the boom will move a little back and forth
when driving in the field (yaw movements).
Uneven terrain or varying driving speed will magnify the boom
movements.
If the boom falls behind the boom centre, the center of gravity will also
shift the wrong way, which can result in inaccurate spraying.
The position of the boom tips should be checked occasionally to see, if
they are pointing forward relative to the boom centre. After many hours
of spraying in the field, the boom will tend to position itself further and
further backwards when unfolded due to wear.
Adjustment
One boom wing at a time is adjusted.
1. Park the tractor and sprayer. Activate the handbrake.
2. Unfold the spray completely and turn off the tractor engine.
3. Stand near the boom centre.
Look across to the opposite boom tip (A) while aligning the sides
(facing towards the main tank) of the two vertical boom structures
(B) and (C).
The boom tip should be just visible, if correctly adjusted.
4. If you do not see the boom tip, or you see the most of the boom
wing, go to step 5 for adjustment.
5. The black disc (D) is positioned to impact the boom structure and
stop the boom movement, when the boom wing moves
backwards. On the opposite side of the boom structure, an
identical disc stops the forward movement.
Adjust the threaded pin in or out by turning the nut (E) and
counternut to bring the boom wing to the correct position.
Adjust the other disc equally the opposite way.
Tighten the nuts after adjustment.
6. Repeat step 3.
6 - Maintenance
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