6 - Maintenance
179
Adjustment of Boom Lock
Description of Boom Lock Mechanism
To prevent accidental folding of the spray boom while spraying, the
boom joints interlock automatically when fully unfolded. The conical
bolt (A) will guide the boom sections into the interlocking position.
A specially designed steel plate (B) will be lifted up, as the conical bolt
(A) passes through the plate. The plate (B) will fall down behind the bolt
head, thus securing the unfolded position.
When folding, a hydraulic cylinder (C) will temporarily pull up the steel
plate (B) to allow the boom sections to separate.
÷
NOTE! On the picture, the cylinder (C) is detached from the steel
plate (B). It must be attached during operation of the boom.
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ATTENTION! The following boom alignment is only carried out, if
changing the positions of the rubber pads on the boom is
insufficient to steer the boom sections into the folded transport
position. When folding the boom, the upper edges of the boom
sections should align to allow the hydraulic boom locks to
engage.
Horizontal Alignment of the Boom
The bolt (A) can be adjusted sideways as needed.
1. Loosen the lock nut (D). Wrench = 41 mm.
2. Turn lock bolt (A), until the boom sections align. Wrench = 46 mm.
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ATTENTION! The lock bolt is eccentric. Always turn it 1 full round at a time; this will move the lock bolt 3 mm back or
forth. Ensure that the lock bolt aligns with the centre of the hole in the lock mechanism, when the adjustment is
completed.
3. Re-tighten the lock nut (D). Torque = 250 Nm.
Adjustment completed.
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