87
English
• The holder of the belt pulley is equipped with an adjuster to adjust the belt tension.
• To do this, loosen the fixing nut M8 one turn (turn counter-clockwise) (socket wrench 13 mm)
• Then manually press the belt pulley as much as possible against
the belt and tighten the fixing nut firmly again. (Turn clockwise
with a 13 mm socket wrench).
• Next, test the belt tension again and adjust as needed.
• After performing this maintenance, the belt protection cap can
be remounted.
IV. 4
th
belt drive (seed distributor)
Although there is a belt here, it does not act as a drive belt but
as a decoupling belt.
The pulley on the axle of the seed distribution mechanism
consists of two halves: one half is driven by a chain and is the
floating half, the other half is fixed to the auger shaft and is the
driven half.
By tightening this belt, they connect the floating and driven
half, which causes the seed transport augers to start rotating.
If the tension on the belt is insufficient due to stretching, slip
will occur during this transfer and the seed augers will rotate irregularly, resulting in a dis-
rupted seed pattern. This belt tension can be adjusted as follows:
• Remove the large protective cover (read § 15.1; page 99)
• At the end of the cable guide there is an adjuster.
• Loosen the counter nut on the underside of the support. Turn the nut 5 turns clockwise more
towards the end of the adjuster sleeve. Use a size 10 open end wrench.
• Then also turn the nut on the top of the support in a clockwise direction so that the adjuster
sleeve moves upwards in relation to the support.
• Check the tension by pressing the yellow lever on the handlebar.
• Repeat the above until you notice that sufficient tension can be applied to the belt again.
• Then tighten the nut on the underside of the support (turn counter-clockwise) to secure the
setting. If the adjuster sleeve turns when tightened, it can be held in place with an open-end
wrench 9.
• After performing this maintenance, replace the belt protective cover as it was originally fit-
ted.
Tip: This coupling function of this belt can also be disturbed by contamination with lubricant
from other drives nearby. Therefore, clean the belt and the treads of the pulley halves with a
degreasing spray, and wipe them clean.
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