This turned out to be easy…

1. Unscrew the ring where the lensname is printed. That’s just a ring screwed down in the filterthreads. Take a round object with smaller diameter then the 49mm filterthreads, cover it with a rubberglove or something that’s soft but has friction. Press down and unscrew the name-ring.
2. The front hull of the lens is atteched with three small screws. Tighten the small screws you see down between the hull and the lenses glass.
3. Reattach the name-ring. Done!

Here some pictures I took while doing this:

• Miracles from the fleemarket – Pentacon tulip
• Roses after repair of Helios 44-3
• Review of Asahi Auto Takumar 85mm/1.8
• Review of Pentacon Electric 135mm f2.8 M42
• Review of Asahi S-M-C Takumar 55mm/1.8