LTM Jupiter-8 attacked by fungus

[tho60]

Hello!

I have bought an LTM Jupiter-8. Behind the front element I can see some fungus. Kim Coxon describes how could I disassembly the mechanical block, but how to take apart the optical block in order to get rid the fungus? 🙁

 

[Sonnar Brian]

Unscrew the optics module as Kim describes. At that point, take off the ring holding the aperture ring in place. It is held in by a set screw. Be sure to scribe the position. Then take out the guide screw that links the aperture ring to the underlying mechanism. Unscrew the aperture ring as one unit, leave the chrome trim ring in place. You will see two hidden set screws that hold the front filter ring in position. Take out the two screws, unscrew the front ring, the glass will come out.

 

[tho60]

Unscrew the optics module as Kim describes. At that point, take off the ring holding the aperture ring in place. It is held in by a set screw. Be sure to scribe the position. Then take out the guide screw that links the aperture ring to the underlying mechanism. Unscrew the aperture ring as one unit, leave the chrome trim ring in place. You will see two hidden set screws that hold the front filter ring in position. Take out the two screws, unscrew the front ring, the glass will come out.

Thank you very much. Following your guide, I managed to remove the fungus with vinegar- alcohol was inefficient.