How To Dismantle A 204 Desk Pen

[chunya]

Hi,

 

I've just picked up this 204 pen and stand (1950s - 60s?) which I would really love to get working and use. The main problem is that although the piston moves up and down it doesn't draw up at all. I assume that the nib section unscrews, but haven't yet tried it, but how is the piston accessed?

 

I've never had one of these before so know little about them, what might be the problem?

 

I love the nib and and it will make a great daily user for me.

 

It looks like the end section has suffered over the years with being dipped in ink, but for the time being I can live with the corroded ring and discoloured section.

 

Any help would be gratefully accepted. Thanks

 

 

[niksch]

The MB204 is generally equivalent to the MB254 with the exception of the taper. The nib assembly on the 204 is removed just like the 254, which will then allow the section piece and the gold ring to be removed.

 

I've never removed the piston mechanism on a 204 or 25x model of pen. It appears a tool resembling a Parker Vacumatic wrench is required. I need to research this further.

[CS388]

If you can get enough purchase on the knurled ring at the end of the barrel, the piston mechanism can often come out without much struggle (25x series - never done a desk pen) - a bit of heat always helps.

 

It's been a while since I've dismantled one, but I'm not sure if I've ever had the section piece and clutch ring off? (Memory failure) Is it a screw-in arrangement?

 

Thanks.

[niksch]

If you can get enough purchase on the knurled ring at the end of the barrel, the piston mechanism can often come out without much struggle (25x series - never done a desk pen) - a bit of heat always helps.

 

It's been a while since I've dismantled one, but I'm not sure if I've ever had the section piece and clutch ring off? (Memory failure) Is it a screw-in arrangement?

 

Thanks.

 

Yes, its a threaded arrangement.