Pelikan M205 - ink residue behind piston

[sjones581]

Thanks katherine, I had lots of condensation behind my blue M205's piston that needed to be removed and tried the "Kate Method". It worked as described!

 

Lesson learned: do not get demonstrator if you are anal retentive.

[sjones581]

After taking apart my Pelikan I have become that much more appreciative of my TWSBI Diamond 530!

[sera0516]

I don't have this pen, but I have other pens with screw-in nib/feed units and here is how I unscrew them when they are too tight and I fear cracking them:  I gently unscrew them in the presence of very warm air.  I have the pen in both hands in front of an electric space heater.  Too hot for my hands and I know it's too hot for the pen.  This technique unfailingly, in my experience, has quickly loosened the moving part, in about a minute.  If this did not work, I certainly would not use any more heat.  Possibly warm water would work also, but I prefer warm air.  My last sugestion, which I have never tried, would be to attempt to lubricate the threads before giving a final turn.  Problem is, you can't use any normal lubricant, as far as I know, because there is not only a risk of damage, but you don't want gunk where ink is later going to be.  So---I would "lubricate" with lubricated ink.  Probably dip the nib into the lubricated ink (like Noodler's Eel), turn the pen upside down (nib pointing upward) and let some ink slide into the threads.  Then try to turn, perhaps again in the presence of warm air.  I'd use a Waterman ink if I didn't have Eel.  Just my 2 cents.  YMMV.

[patrickfp]

I know this is an old thread, but I have one question before attempting to do the same. Do I just keep turning in the same direction as if I am filling the pen? I noticed a bit of water behind the piston in my M205 blue demonstrator.

[NicolausPiscator]

Hello Kate,

 

Thank you first of all for your detailed and helpful description!

 

I have a similar problem with my Pelikan M150 but I can't get the grey section with the threads off. I have tried your method but it doesn't work. As far as I can tell and as far as I have tried.

 

Does anyone has a clue how to proceed?

 

Here is a picture of the state of demontage:

 

Edited September 7, 2017 by NicolausPiscator

[NicolausPiscator]

So, here we are, everything managed and pen is clean.

 

For the one who is in a similar situation I would suggest two videos:

 

Disassembling:

Assembling:

[AceNinja]

Hi, first of all, sorry for asking question on this old thread, but it contains very useful information for any M200/M205 (and even M400/M405) owners, and I got 1 question I wanted to ask.
Also FYI, I've searched and read enough information online to know that M200's piston assembly is press fitted into then barrel and is not really intended to be removeable.  But I still would like to learn all the info because who knows, might be useful someday.
 

On 12/16/2008 at 7:47 AM, katherine said:

The piston will come out the back if I'm rough with it. That's because the two little rings (see the disassembly) got smoothed flat a little from being extracted so brutally. I've not taken it apart since. If I had've have this post to follow, then I would've been able to see how those are structured, so I would've been able to avoid doing that - I hope that helps somebody in the same situation!

 

Kate

 

So, just to confirm, the parts that is most likely to get damaged from the process, is the 2 little rings on the piston assembly correct?  Ie the pen barrel is going to survive; the piston assembly (black plastic) is going to damage first, at the 2 little rings which the purpose is to seat in 2 little groove on the pen barrel.  Using one of Kate's earlier photo to point to the 2 little rings on the piston assembly.

 

 

[Phonz]

Thank you Kate and NicolausPiscator, that was an excellent contribution! 
oh yes and AceNinja for clarification! Yes! 🙌