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Sheaffer Pfm Leak Through Snorkel Tube

Jonis

By Jonis
in Repair Q&A

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Jonis Dipped Only

Jonis

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I have a Sheaffer PFM which was resacced and fitted with new seals a year ago and has been in use for some time without any issues. It has recently developed a leak whereby ink appears to come out of the snorkel tube in big blobs, a variable period after the pen has been filled.

Does anyone have an idea of the cause and how it can be remedied?

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Ron Z Museum Piece

Ron Z

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I agree. If the pen has been behaving for quite some time and now leaks, air is getting in through a failing sac. Time to have it replaced.

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Jonis Dipped Only

Jonis

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Thank you very much for your responses. The pen also seems to be taking in less ink. Perhaps this is consistent with a puncture in the sac? I have ordered a new sac and will try this out in a month or so when the parts arrive. Thanks again!

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Ron Z Museum Piece

Ron Z

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Thank you very much for your responses. The pen also seems to be taking in less ink. Perhaps this is consistent with a puncture in the sac? I have ordered a new sac and will try this out in a month or so when the parts arrive. Thanks again!

 

That's another symptom.

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  • 4 months later...
Jonis Dipped Only

Jonis

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Thanks all for the advice. Finally got round to repair and it was a melted sac.

Regards

Jon

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ralfstc Vintage

ralfstc

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Oooh, I had a melted sac in a regular snorkel not long ago and it drove me up the wall! I couldn't work out what was going on (I'd just replaced the sac) and I stripped and rebuilt the front of the poor thing about 2,738 times trying to figure out why it wouldn't fill and write, including replacing the snorkel tube and the plastic inserty thing twice. When I replaced the sac it instantly became a BEAUTIFUL writer. I still have no idea why the sac melted, but it looked quite literally like it had been under the grill.

 

Take care,

 

Ralf

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Ron Z Museum Piece

Ron Z

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Now you know why I have been installing only PVC sacs, and only PVC sacs in Snorkels since 2012, and will continue to do as long as I have them available. I bought every #14 I could get my hands on after Martin Smith passed away 2 years ago.

 

I have seen some of the boutique inks, and red inks in particular, kill a sac in a month. Make sure that you have a good coat of talc on the sac before you put it in the sac guard.

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