Jump to content
Classifieds is broken, please do not submit any new ads ×

Stuck Piston Knob On My Mb 146..


desperatemb
 Share

Recommended Posts

Hey guys,

I'm close to killing myself due to my piston knob being stuck. I wanted to refill my Meisterstück 146 fountain pen today and instead of activating the drawing mechanism by turning the knob, I removed the piston completely and thereby found out that the drawing mechanism is somehow stuck. Any ideas?

Thanks in advance. My life is in your hands.

suicidal mb-user from Germany

post-140528-0-07281500-1513677103_thumb.jpeg

Link to comment
Share on other sites

  • Replies 7
  • Created
  • Last Reply

Top Posters In This Topic

  • hari317

    1

  • Beechwood

    1

  • ReadyFireAim

    1

  • desperatemb

    1

Top Posters In This Topic

Posted Images

Use two rubber sheets for grip. With one hand grip the brass part, with the other hand, grip the conical knob and give a sharp twist counterclockwise.

In case you wish to write to me, pls use ONLY email by clicking here. I do not check PMs. Thank you.

Link to comment
Share on other sites

The most sensible option is to use the excellent MB service program, perfect results for not a lot of money and if they break it then its their problem.

 

If you want to do it yourself then I would suggest a warm pen bath for an hour or so, dry it off throughly and then follow Hari;s advice and use something grippy, some people use washing up gloves or a bicycle inner tube, or even ask someone to hold the pen whilst you grip and turn. I never use pliers.

 

If that doesnt work then look at something like a penetrating lubricating spray, Lidl sell something suitable or WD 40.

 

Personally, I would go the MB service route, especially as you are in Germany.

Link to comment
Share on other sites

I answered your question on the other forum so I'm not going to repeat myself here. On the other forum I didn't know you were in Germany.

 

Send it to Montblanc for a level one service is the best advice now. :)

Link to comment
Share on other sites

Drop it in a cup of hot water. [drinkable hot coffee temperature] for an hour.

 

Really? Black, or with cream and sugar?

 

Sorry, I couldn't resist. I wouldn't do that. But I would suggest that the grip knobs need to be tightened just to where it stops, not tight.

 

What I would assume has happened is that it was tightened too tight after being filled and the grip knob is stuck on the brass thread bushing, so the bushing unscrewed as the knob was turned back. Warming gently over a hair dryer (warming, not heating) and then gripping the brass and the knob with a grippy pad and turning CCW should loosen it. The challenge though will be inserting the piston mechanism into the barrel and getting it snug again without damaging it if you don't have a spanner to fit in the notches. The piston seal should be lubricated again before you put it back in the pen.

 

If you aren't mechanically inclined, MB service, or a good pen mechanic would be a wise choice. This resin can be brittle, and can not be solvent welded.

spacer.png
Visit Main Street Pens
A full service pen shop providing professional, thoughtful vintage pen repair...

Please use email, not a PM for repair and pen purchase inquiries.

Link to comment
Share on other sites

I agree with other comments I have had exactly the same problem with a 146

It should undo easily using a bit of rubber

It then needs a bit of a service ie. cleaning threads under knob and a little silicone grease on piston

you then need a special tool to tighten the brass piston housing back in place.

Shame you are not in UK, I would have gladly fixed and serviced piston for you

Mike

Link to comment
Share on other sites

If you have a piston removal tool, you may be able to use it upside-down (ie. from underneath) to hold the brass section, while turning the knob with a rubber grip?

I, also would avoid the use of pliers. Hopefully, this is an easy fix.

 

Once it's free, you could work the knob back and forth, to make sure the threads are good - I'd agree with Ron Z's assumption:

 

 

 

What I would assume has happened is that it was tightened too tight after being filled and the grip knob is stuck on the brass thread bushing,

 

Good luck.

Edited by CS388
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share



  • Most Contributions

    1. amberleadavis
      amberleadavis
      37808
    2. PAKMAN
      PAKMAN
      30917
    3. Ghost Plane
      Ghost Plane
      28220
    4. jar
      jar
      26101
    5. wimg
      wimg
      25595
  • Upcoming Events

  • Blog Comments

    • Matthew TWP
      @Ruaidhri This was an absolutely wonderful bit of writing, and I hope that you're able to maintain the style once all of the medications are out of your system.  Take care and recover quickly!
    • Dr.X
      Very punny daniel
    • danielfalgerho
      These comments make me sad as I sympathise with Ruaidhri, having great difficulties in being taken seriously. Or being taken at all (no off-colors jokes, please!) In spite of overwhelming odds,  Ruaidhri -now I know how to spell it- made a courageous decision and stuck to it. I was diagnosed with a similar growth in a place I will not reveal. Oh, well, if you insist it was Mount Sinai Hospital. But I firmly intend to walk in Ruaidhri's footsteps, if he will let me, on my next visit to Dublin.
    • ParramattaPaul
      Reminds me of the day my associates and I developed a cure for all mankind's ills and mistakenly wrote it down with invisible ink.
    • AnneD
      Was that the end of the Laboratory? Somehow the exactitude created a fully destructive device, as always!
  • Chatbox

    You don't have permission to chat.
    Load More
  • Expiring Soon

    • By benbot517
      51 years and 11 months
    • By benbot517
      51 years and 11 months
    • By benbot517
      51 years and 11 months
    • By Okami
      51 years and 11 months
    • By Okami
      51 years and 11 months
  • Random Adverts

  • Files

  • Today's Birthdays

    1. alborticus
      alborticus
      (40 years old)
    2. ardvarticus
      ardvarticus
      (28 years old)
    3. BB Crafts
      BB Crafts
    4. bbqncigars
      bbqncigars
      (82 years old)
    5. Caneta
      Caneta
      (55 years old)





×
×
  • Create New...