Help With Disassembly of PB-Mount Prakticar 50mm f/1.8 Lens

[nimoythecat]

I have a "Version 1" sample of the Prakticar 50mm f/1.8 lens in PB mount (the one that focuses to 0.33m). It is in dire need of relubrication, but it is not clear to me how to disassemble it to get to the helicoids. Does is unscrew from the front? Or the back? Someone on another thread years ago had mentioned that it was "easy" to service this lens, but it is not apparent to me. Here is the lens for reference. Thank you in advance for any help you could provide!

[Zamo]

I believe you have to unscrew the name plate in the front (use a rubber plug from the sink or something like that to get friction). Then you will be able to unscrew again the conical piece using the two little slots you can see in your picture, and then proceed after that.

[cesare]

Good morning try these links:
www.suaudeau.eu/memo/rep/Prakticar_50_1,8.html
https://pakira3.sakura.ne.jp/wp/?p=90827
https://pakira3.sakura.ne.jp/wp/?p=90967
saluti
cesare

[nimoythecat]

Thank you! Those links are great for this.