Boom Tilt Correction

The boom suspension system is self-correcting. The boom tilt correction will therefore not be needed often on flat fields.

However, some degree of boom tilt correction is always necessary when closing boom sections. This may also be the case if the spray boom needs to be set at an angle (e.g. when working on slopes).

The tilt position of the spray boom can be changed because there is a second articulation point in the pendulum system (A). The boom tilt correction is always carried out with a hydraulic cylinder (B).

The boom tilt correction is done by operating the appropriate double-acting selective control valve of the tractor for sprayers with hydraulic operation (with or without hydraulic selector).

A-Articulation point for boom tilt correction
B-Hydraulic boom tilt cylinder
C-Guiding system for boom tilt correction

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For sprayers with electro-hydraulic control (EHB-1) or (EHB-2), the boom tilt is operated with rotary switch 6 on the EL-4 sprayer control box (and not with switch 15 of the EHB-2 control box). Using this boom tilt correction with pre-set position, the position of the spray boom can be very accurately adjusted to the conditions.

When button (A) is in position 0, the boom is in the neutral position. On flat ground and with all sections open, the spray boom must hang parallel to the ground with the button in this position (if potentiometers are properly adjusted). The spray boom can be corrected by turning the knob to the left or right. Oversteering or prolonged post-correction is avoided because you know exactly how far the cylinder will travel. Also see "Control Box" in the section "Operation of the Machine".

A-Boom tilt correction rotary switch

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