Hydraulic folding bout markers
The hydraulic marker changeover lifts the bout markers of all AD-P into the vertical position and then lowers them again. In this way sowing is possible even on the headland and obstacles can be negotiated. In order to transfer the weight of the bout markers and thus the centre of gravity of the sowing combination nearer towards the tractor, the bout markers are fitted directly on the rotary cultivator or the rotary harrow. This design also results in another big advantage that the bout markers can also be used during solo operation of the soil tillage implement, for instance, when pre-working or when in conjunction with a precision air seeder. Thanks to the cranked arms the bout is perfectly marked even when working in coarse, very cloddy conditions. In addition, the arms, with their integrated sprung action reduce the strain during peak forces.