Onoto Repair Problems - Please Help

[hendihorn]

Hi I am trying to restore a onoto the pen with model number 5601, I have established that the problem with the pen is the cork at the end of the pen are rotted, and therefore don't have a good seal, however to replace the cork you need to remove the rod, which to do so you need to remove the end cap on the end, I do not know how to remove the rod from the end cap, please help, Thanks

[praxim]

If you look closely at the cap near its top end, you will see a circle marking the edge of a pin through the cap and rod to the point on the opposite side. This pin is a a little over 1 mm in diameter and will be made of hard rubber, most likely. One or both ends may be camouflaged by the "5601" and other markings on the end of the pen so a magnifier is helpful for finding it.

 

You may want to remove the rod entirely to remove and replace the cork. That will involve removing the section. Given the cork is decrepit, are you confident the internal plunger washer is in good shape? That is a sound reason for removing the other end as well.

 

There are repair links about the net.

[praxim]

Incidentally, from the picture you show, did this pen come from nigglypigpens or are you just using one of his pictures? He does not usually sell unrestored pens sfaik. If it came from niggly, are you sure the cork is rotting, or is the fit just a little loose and leaking ink? A dab of silicone grease would fix that without any disassembly.

[hendihorn]

Thanks,

The image I used wasn't my own pen, just a picture of the same model of my pen, thanks for the advice I have found the circle on the cap, it was next the the '5601' marking as you said, however I don't know how to get it out, please help... again!

 

I think that the internal washer is fine as it still seems rubbery and springy, however, if i remove the rod I may replace it anyway, as it isn't much more for those parts, and it is probably going to fail at some point anyway.

 

Thanks for all the help

[praxim]

Google "onoto repair richard binder". The top hit or thereabouts will be richardspens.com with probably a direct link to his page on repairing a plunge filler. That will give you a section diagram on the pen plus advice on tools and technique. The Pen Repair book book by Marshall and Oldfield (an English publication) also covers it.

 

Richard uses a rubber O-ring in place of the cork. In Britain, you should be able to get the proper cork seals and other parts readily. I am on a mobile gizmo at the moment so some web links are not handy for me.

[PaulS]

the Onoto Repair book appears to be available still, in the U.K. from www.onoto.com - price is sterling £10 plus £1.50 postage. A small cost for the wealth of information, and more than useful if you're intending to take these things apart.

[soapytwist]

This thread should help:

 

https://www.fountainpennetwork.com/forum/topic/98610-onoto-plunger-filler-repair-restoration-help-needed/

 

The pin that holds the rod to the plunger knob can normally be pushed out with the end of a paper clip.