Dredge mechanism ia at transportation position when drill leaves the factory. DREDGES are kept in ROAD position as long as they remain in garage and while going ad returning to the field. On the field, they are set to PLANTING position. Duty of the dredge is to make planted seeds covered by soil. Closer springs should be complete and expansion springs should be functional so that they can make the best of fulfilling this duty. Check the expansion springs and replace the ruptured or loosened spring with the new one.
The pressure that is applied by dredge can be made over the pressure adjustment lever according to the soil structure of the field to be planted