Disassembly of the worm: rotate the handle as soon as the 6yl oil press machine stops and pull out the screw from the chamber, remove nuts and adjusting bolt. Insert a 16mm diameter bar into lock nut and turn it: clockwise. (important note: left hand screw). After taking off lock nut, each part of pressing screw can be removed. However, holes in the screw might be blocked by fine slag particles, which retard the disassembly. Tapping or heating pressing screw might help disassembling.
Assembly of the worm: put small end of its shaft up wards, mount the first screw and then the second sequence, tighten then by the lock nut to avoid particles in. On both ends of adjusting bolt, which is easily swung on the shaft by adjusting nut, two bearing 8309 are mounted. Be careful to make big hole sides of these two bearings touch adjusting bolts double ends. Finally, whole pressing screw will be tightened by two M42 x 2 nuts, but certainly, gaps of two bearings need to be carefully set. In fact, if hands can swing adjusting.