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Parker 51 Vac, Ink On The Section


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#1 Parkette

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Posted 06 March 2018 - 17:37

Not a 51 expert so hoping that someone can help.

 

My 51 Vac has just been brought into use after not being used for many many years, it fills and writes ok but if the pen is left on my desk, capped and laid down,  there is ink around the section and in the cap when the cap is removed.

 

Could you suggest what may be going wrong please?

 

Thank you

 

Pkte


Edited by Parkette, 06 March 2018 - 17:57.

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#2 hari317

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Posted 06 March 2018 - 18:14

Clean the cap well. Clean the section and then store the pen nib up. See what happens.
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#3 Parkette

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Posted 06 March 2018 - 18:35

Clean the cap well. Clean the section and then store the pen nib up. See what happens.

 

 

Thanks Hari.

 

I have just put two 51 Vacs to the test. Both caps are dry as a bone, laid down though. I will store the suspect 51 as you suggest, wait until I have had some tea and then test again.


Edited by Parkette, 06 March 2018 - 18:48.

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#4 Flounder

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Posted 06 March 2018 - 19:35

I imagine the old diaphragm is no longer ink tight. Air getting in the back of the pen will mean ink coming out the front.


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#5 Parkette

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Posted 06 March 2018 - 21:05

Thank you both for your advice. an old and faulty diaphragm had occurred to me. The pen fills and expels 8-10 drops which IGriz used to say was about right. I have tried to blow down the filler and that didnt work.

 

Will give the pen 24 hours having given the cap a very good clean, if there is any more ink to be seen then the diaphragm must be the culprit.


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#6 Ron Z

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Posted 06 March 2018 - 21:30

Thank you both for your advice. an old and faulty diaphragm had occurred to me. The pen fills and expels 8-10 drops which IGriz used to say was about right. I have tried to blow down the filler and that didnt work.

 

Will give the pen 24 hours having given the cap a very good clean, if there is any more ink to be seen then the diaphragm must be the culprit.

 

Tom may have so opined, but he was wrong.  You can not effectively measure the amount of ink taken into the pen by how much you get out of the pen.  Take a look at this article  that I wrote several years ago, and you'll see what I mean. 

 

The cause of the problem could be a bad diaphragm, it could be that the feed is not set properly against the nib, it could be that ink is getting pulled out of the pen because the vent system in the cap is clogged, or it could be that you haven't filled the pen properly i.e. the last pump down, you hold it down and then pull the pen out of the ink, then release the pump.  This clears the excess ink out of the breather tube and collector.  If you don't do this, the pen may have a tendency to flood. 

 

If blowing down the filler had worked, I would have been concerned.  Between the pump rod and the inside of the pen is the diaphragm, which is water and air tight.  Parker made a tool to test a diaphragm, which was a piece that fit into a bulb, and screwed onto the threads of the blind cap nipple.  You screwed the tool onto the pen, immersed the pen in water and squeezed the bulb.  If bubbles came out the tip of the pen, you had a bad diaphragm.  If nothing came out, the diaphragm was likely OK.


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#7 Parkette

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Posted 07 March 2018 - 05:38

Thanks Ron, a very comprehensive reply.

 

The pen is going to a professional to be sorted out, I really appreciate your helpfulness.


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