yukosteel Posted June 21, 2021 Share #1 Posted June 21, 2021 Advertisement (gone after registration) Article on partial disassembly of Leica Summilux-M 50mm f/1.4 ASPH. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! 11 2 Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/322018-partial-disassembly-leica-summilux-m-50mm-f14-asph/?do=findComment&comment=4223701'>More sharing options...
Advertisement Posted June 21, 2021 Posted June 21, 2021 Hi yukosteel, Take a look here Partial disassembly - Leica Summilux-M 50mm f/1.4 ASPH.. I'm sure you'll find what you were looking for!
jaeger Posted June 21, 2021 Share #2 Posted June 21, 2021 Well done! I wish you have the black chrome version to disassemble too. Quote Link to post Share on other sites More sharing options...
yukosteel Posted June 21, 2021 Author Share #3 Posted June 21, 2021 With black chrome version it should be even easier process. Looks like first step there is to unscrew three flat thread bolts on aperture ring, remove it, and then either releasing aperture controlling ring if it's separate, or unscrewing few bolts on focusing ring and elevating it. 1 Quote Link to post Share on other sites More sharing options...
FrozenInTime Posted June 21, 2021 Share #4 Posted June 21, 2021 Such a short length of helicoid for a lot of mass in the optical cell forward of it ; may explain why so many of us have had problems with focusing slop and FLE stiction. 1 Quote Link to post Share on other sites More sharing options...
labyrinth Posted June 21, 2021 Share #5 Posted June 21, 2021 More pictures here link below. You can also find disassembly pictures of FLE and AA and Noctilux. It helped me a lot when I did CLA of my leica lenses. Summilux-M 50mm F1.4 ASPH 2 1 Quote Link to post Share on other sites More sharing options...
yukosteel Posted June 21, 2021 Author Share #6 Posted June 21, 2021 8 hours ago, labyrinth said: More pictures here link below. You can also find disassembly pictures of FLE and AA and Noctilux. It helped me a lot when I did CLA of my leica lenses. Summilux-M 50mm F1.4 ASPH Oh wow! Thank you very much for sharing this resource! Brilliant work done there, and it's extremely useful indeed. That will greatly help me to move forward with further disassembly steps. Quote Link to post Share on other sites More sharing options...
Gobert Posted June 22, 2021 Share #7 Posted June 22, 2021 Advertisement (gone after registration) You have guts. Quite impressive operation. Quote Link to post Share on other sites More sharing options...
labyrinth Posted June 23, 2021 Share #8 Posted June 23, 2021 On 6/22/2021 at 4:33 AM, yukosteel said: Oh wow! Thank you very much for sharing this resource! Brilliant work done there, and it's extremely useful indeed. That will greatly help me to move forward with further disassembly steps. Here is my FLE before I gave it a new grease Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! 4 Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/322018-partial-disassembly-leica-summilux-m-50mm-f14-asph/?do=findComment&comment=4224815'>More sharing options...
yukosteel Posted June 24, 2021 Author Share #9 Posted June 24, 2021 On 6/23/2021 at 1:06 AM, labyrinth said: Here is my FLE before I gave it a new grease Very cool! Great job done with disassembly and grease removal. And beautiful components there, thanks for sharing detialed pictures. May I ask which grease are you using? I see there are different fine and larger threads there, so probably different viscosity grease is required there. Quote Link to post Share on other sites More sharing options...
Adam Bonn Posted June 24, 2021 Share #10 Posted June 24, 2021 On 6/21/2021 at 9:43 AM, labyrinth said: More pictures here link below. You can also find disassembly pictures of FLE and AA and Noctilux. It helped me a lot when I did CLA of my leica lenses. Summilux-M 50mm F1.4 ASPH The part with the optical alignment is very intriguing, I wish I could understand it (even with google translate) Quote Link to post Share on other sites More sharing options...
Danner Posted June 24, 2021 Share #11 Posted June 24, 2021 Wow!!! I am far too great a coward to attempt that. Quote Link to post Share on other sites More sharing options...
labyrinth Posted June 24, 2021 Share #12 Posted June 24, 2021 (edited) 4 hours ago, yukosteel said: May I ask which grease are you using? I see there are different fine and larger threads there, so probably different viscosity grease is required there. I mainly use "MicroLubrol Helimax-XP" which is fully synthetic base lithium and PTFE. For the fine thread helicoid you only need a tiny amount. It is stiff a little but butter smooth I like it and it is safe, very important. I have tried different other brands including famous Japanese grease but those use silicone oil as a base component which is hard to remove and tend to migrate, the oil will separate and spread all over. Silicon oil is also bad for plastics so stay away from it. I wanted to try this grease as they say is a good choise, but due to my location could not obtain one. This is how Japanese grease looks under the flange: Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! And here is my pre-FLE shiny and clean. Single coarse-threaded helicoid. Easy one: Edited June 24, 2021 by labyrinth 4 1 Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! And here is my pre-FLE shiny and clean. Single coarse-threaded helicoid. Easy one: ' data-webShareUrl='https://www.l-camera-forum.com/topic/322018-partial-disassembly-leica-summilux-m-50mm-f14-asph/?do=findComment&comment=4225792'>More sharing options...
yukosteel Posted June 26, 2021 Author Share #13 Posted June 26, 2021 On 6/24/2021 at 3:30 PM, labyrinth said: I mainly use "MicroLubrol Helimax-XP" which is fully synthetic base lithium and PTFE. For the fine thread helicoid you only need a tiny amount. It is stiff a little but butter smooth I like it and it is safe, very important. I have tried different other brands including famous Japanese grease but those use silicone oil as a base component which is hard to remove and tend to migrate, the oil will separate and spread all over. Silicon oil is also bad for plastics so stay away from it. I wanted to try this grease as they say is a good choise, but due to my location could not obtain one. Thank you for details! I'm also using Helimax-XP for wider threads, and also not very impressed by common Japanese grease #40 and #30 - tried it in Voigtlander lens and it is separating over time. I've recently discovered Polar Bear Camera grease made in UK, and they have ASTM 470 and ASTM 420 grade that are softer than Helimax-XP. Tried it once for a fine thread of Zeiss 35/2 Biogon T, and it leads to much more effortless rotation. It's also fully synthetic PTFE. Quote Link to post Share on other sites More sharing options...
labyrinth Posted June 26, 2021 Share #14 Posted June 26, 2021 1 hour ago, yukosteel said: I've recently discovered Polar Bear Camera grease made in UK I'll check this out. Thanks Quote Link to post Share on other sites More sharing options...
labyrinth Posted June 27, 2021 Share #15 Posted June 27, 2021 On 6/21/2021 at 6:06 PM, FrozenInTime said: Such a short length of helicoid for a lot of mass in the optical cell forward of it ; may explain why so many of us have had problems with focusing slop and FLE stiction. Exactly. I just measured hood assembly from the brass version (65gr). You can imagine the forces aluminum helicoid sustain when a front group moves. Definitely the design flaw Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/322018-partial-disassembly-leica-summilux-m-50mm-f14-asph/?do=findComment&comment=4227551'>More sharing options...
Infantasy Posted September 20, 2021 Share #16 Posted September 20, 2021 On 6/25/2021 at 6:30 AM, labyrinth said: I mainly use "MicroLubrol Helimax-XP" which is fully synthetic base lithium and PTFE. For the fine thread helicoid you only need a tiny amount. It is stiff a little but butter smooth I like it and it is safe, very important. I have tried different other brands including famous Japanese grease but those use silicone oil as a base component which is hard to remove and tend to migrate, the oil will separate and spread all over. Silicon oil is also bad for plastics so stay away from it. I wanted to try this grease as they say is a good choise, but due to my location could not obtain one. This is how Japanese grease looks under the flange: Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! And here is my pre-FLE shiny and clean. Single coarse-threaded helicoid. Easy one: labyrinth, I am preparing to dissemble my 35 pre-FLE. Would you please share some photos or procedures on how to open the lenses and gease the aperture ring. Thanks Quote Link to post Share on other sites More sharing options...
MrFriendly Posted September 20, 2021 Share #17 Posted September 20, 2021 @yukosteel how do you align the lens elements? Quote Link to post Share on other sites More sharing options...
Infantasy Posted September 22, 2021 Share #18 Posted September 22, 2021 On 6/26/2021 at 1:07 PM, yukosteel said: Thank you for details! I'm also using Helimax-XP for wider threads, and also not very impressed by common Japanese grease #40 and #30 - tried it in Voigtlander lens and it is separating over time. I've recently discovered Polar Bear Camera grease made in UK, and they have ASTM 470 and ASTM 420 grade that are softer than Helimax-XP. Tried it once for a fine thread of Zeiss 35/2 Biogon T, and it leads to much more effortless rotation. It's also fully synthetic PTFE. which grease do you prefer, ASTM 470 or ASTM 420, for fine thread. They ultra soft and extra soft respectively and hard to decide which one suitable for my Leica 35 Summilux. Thanks. Quote Link to post Share on other sites More sharing options...
labyrinth Posted September 30, 2021 Share #19 Posted September 30, 2021 On 9/21/2021 at 1:55 AM, Infantasy said: labyrinth, I am preparing to dissemble my 35 pre-FLE. Would you please share some photos or procedures on how to open the lenses and gease the aperture ring. Thanks Hi there, When I open up my precious lenses I usually do not mess with the optics so there is not much left to play around when you disassemble mechanics, particularly for non-FLE version all you do is remove the flange rotate the focus ring until it's off then loosen the ring with a spanner or calipers whatever you have at your disposal and remove that aluminum heli part then take the brass lock ling off and you are there. Refer to this disassembly pics of this technician. There is not much to grease when speaking about aperture ring just a small trace for the metal ball to slide around. I think not worth the effort. regards Quote Link to post Share on other sites More sharing options...
Infantasy Posted September 30, 2021 Share #20 Posted September 30, 2021 2 hours ago, labyrinth said: Hi there, When I open up my precious lenses I usually do not mess with the optics so there is not much left to play around when you disassemble mechanics, particularly for non-FLE version all you do is remove the flange rotate the focus ring until it's off then loosen the ring with a spanner or calipers whatever you have at your disposal and remove that aluminum heli part then take the brass lock ling off and you are there. Refer to this disassembly pics of this technician. There is not much to grease when speaking about aperture ring just a small trace for the metal ball to slide around. I think not worth the effort. regards labyrinth, I was able to dissemble the pre-FLE except the retaining ring for the circled parts. I had used calipers to open but unsuccessful. It was very tight or may be at the wrong side. Would you please advise it should be turned clockwise or anti-clockwise? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/322018-partial-disassembly-leica-summilux-m-50mm-f14-asph/?do=findComment&comment=4284114'>More sharing options...
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