Montblanc 84

[chunya]

Hi All,

 

I originally posted this in the Repairs Forum, but think I would have had more luck here, so apologies for the duplicate post.

 

I picked up an 84 a few weeks back and the piston was stuck solid. I soaked it, stripped it and it works beautifully now, the only problem is that there is now a small gap between the barrel and turning knob. I've taken it apart, tried everything I can think of, I've even gently pushed the piston as far up the barrel that it'll go, reinserted the threaded whotsit into the piston end, close it (drawing the piston back up) but the gap is still there ... what am I doing wrong?

 

 

 

 

[hari317]

The 84 has a press fit filler? how did you get it out?

 

once you have the filler out of the barrel, assemble the piston mechanism outside the pen and retract the piston fully (which means drw the piston up fully) with this you can check that the knob does close fully when the piston is fully retracted,. if not then readjust the piston stroke. Once this is satisfactory, with the piston fully retracted and piston seal greased, push the assembly back into the barrel, fully.

[chunya]

Hello hari317,

 

Work has kept me busy and I've just returned to this project. I didn't actually remove the piston section, just the helix attached to the turning knob. The photo shows all that was disassembled. I'm not quite sure how to remove the piston mechanism from this model .... 146s and 149s very simple, but this has me scratching my head, And again, no matter what I do I still end up with that gap in picture 2.

 

Any advice will be more than gratefully accepted.

 

 

[canibanoglu]

You can heat the body of the pen for about 3 minutes and then push it out from the inside. At least that's what I did for my 12, 14 and 22. I just used a hairdryer to get the job done. Just make sure to keep turning the body of the pen so the heat is applied evenly.

[slippery when wet]

Hi Chunya, just a word of warning, be careful in the manner you push the inner sleeve out. From memory the only way to push the sleeve out is by applying pressure upon the end of the piston. You can easily damage the piston seal and the hollow piston rod. Make sure what ever you use to knock out the inner sleeve is the exact size of the barrel opening, otherwise you will end up splitting the seal and the piston rod. Some inner sleeves push out quite easily and some are a very tight fit.

Good luck

[chunya]

Thanks both .... I'll give it a go this weekend.

[Inked_Fingers]

@chunya where you able to advance in this? I have exactly the same situation with a Montblanc 84 and can't find lots of information about it.