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Advice Request: Pel M101N Threaded Filler

Russ

By Russ
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Russ

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I used a dry ink and, while threading the piston down during flushout, the threaded filler knob unit backed out of the barrel. :( I taught myself how to reassemble, but I would appreciate advice on how to keep the filler knob unit from backing out again.

 

I fashioned a wrench which mates to the flats on the filler body, snugging up the filler knob unit. The unit stays threaded in place while the piston moves downward. Yet when the knob and filler again back out when I attempt to retract the piston (since the filler unit has left-hand threads).

 

I am considering using just a drop of shellac on the filler unit threads as I reassemble, letting it sit overnight to dry. My fear is that, if this adhesive does not hold, it will have to (1) attempt removal of the filler unit, (2) remove shellac from very, very fine threads, and (3) find more effective adhesive.

 

It's always better to ask before making a mistake. That's why I'm asking. ;)

 

Thank you so much for helping. This is a great pen and I don't want to make a mistake.

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hari317

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Use section sealant. Not shellac. HTH

 

Eta. Do lube the piston seal. If the piston movement is smooth, the filler cannot back out once it has been snugged into the barrel. It only backs out when the stiction is high enough.

Edited by hari317

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Tweel

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I had the same problem with the same version of the M101N. As Hari said, I lubricated the piston, and used a single small droplet of Ron Zorn's section sealant, and it hasn't come out again.

fpn_1375035941__postcard_swap.png * * * "Don't neglect to write me several times from different places when you may."
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Russ

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Thanks, Tweel! The added feedback is very helpful! I love that pen, and I was quite surprised when the backout occurred. I'm glad to know a simple fix is easily achieved! This is one pen I don't want to see compromised. Thank you!

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siamackz

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Use section sealant. Not shellac. HTH

 

Eta. Do lube the piston seal. If the piston movement is smooth, the filler cannot back out once it has been snugged into the barrel. It only backs out when the stiction is high enough.

by section sealant are you referring to what is used for MB 146/9? Like a beeswax + liquid paraffin mix?

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Tweel

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Thanks, Tweel! The added feedback is very helpful! I love that pen, and I was quite surprised when the backout occurred. I'm glad to know a simple fix is easily achieved! This is one pen I don't want to see compromised. Thank you!

 

You're very welcome! I was happy when the problem with my pen proved to be cured.

 

by section sealant are you referring to what is used for MB 146/9? Like a beeswax + liquid paraffin mix?

 

No, it's a very thick fluid, rosin-based sealant (I think actually rosin and castor oil) that holds and seals things, but easily melts and releases when you need to take something apart again. Sheaffer, Parker and one or two other companies used this type of sealant. Here's Ron Zorn's:

 

http://www.mainstreetpens.com/stuff.htm

fpn_1375035941__postcard_swap.png * * * "Don't neglect to write me several times from different places when you may."
-- John Purdue (1863)

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