To give the slots in the segment and the typebars themselves a thorough cleaning, the segment was removed from the machine. There was only so much that could be cleaned when still in the machine, the slots were fairly gummed-up.
Very unlike the tricky carriage assembly, taking out the segment of an Erika M typewriter is surprisingly straightforward. The segment block and also the type-guide are doweled, so they can be taken off and re-mounted without losing their adjustment. After removing the mounting screws the parts can be pried off, taking care with the dowel-pins. At both ends of the segment-block, a screw with a little plate holds the pivot-rod in place.