Pilot Murex Disassembly

[RayCornett]

Pilot Murex - I had done some minor repair on this pen for the original owner but have since then acquired it for my own collection.
For the repair I did , a full disassembly was not necessary. I pulled the cap off yesterday and the section came loose with it. This is what I saw. Is this normally adhered to the inside of the section like an inner cap in a pen cap? I don't seem to be finding pictures of such a part over the feed as of yet.

I also need to disassemble the feed and section which I assume will take heat. The notches on the black section piece and the notches(tabs?) on the metal aren't matching. I am thinking perhaps the section was torqued at some point in the past.

EDIT - After using some common sense I have the feed and all separated. I'll get the sleeve back into the section and go from there. BUT, what is the partial ring piece technically called? It was on the feed end of the threaded "coupler" the feed was screwed onto. It doesn't seem like part of the ring is missing so I am guessing this is the full piece.

I am amazed it didn't come off and disappear into the pen part triangle. The Saint of tiny pen parts must be on my side today.

Edited February 24, 2020 by RayCornett

[CS388]

The Pilot MYU701 has a similar piece. In that particular pen, it's a three-pronged clip, not a full circle (it looks almost triangular, when out of the pen, but takes the circular shape of the section, once inserted).

Its function is to snap the cap into place (when capped).

 

I've had it out a few times over the years, it is held in place by its own spring tension.

And, of course, the connector which screws in above it, to join the barrel and section.

I realise that it's a different pen, but the part may have a similar function?

 

Phone snap of the part in situ on the 701 (at the top of the section):

 

 

 

 

Good luck

[RayCornett]

I got it

[RayCornett]

Now I am just trying to figure which sealant they may have used to secure the sleeve inside the section.