Need help fixing Sheaffer Tip-Dip Touchdown

[Aaron S]

Hello,

  I inherited this pen from my grandpa and would love to use it but the touchdown filling feature seems to not work. I'm sure that the o-ring or ink sack is deteriorated, but the plastic piece that holds the nib and connects the sack is stuck threaded into the body and will not loosen. Just wondering if anyone has tips or tricks to loosen it. Any help appreciated!!

Edited December 30, 2020 by Aaron S

[terim]

If you are referring to the section -- that's the part that holds the nib and feed -- it is force-fit into the barrel.  It is not threaded, so no point in trying to unscrew it.

 

You'd apply a small amount of dry heat and then wiggle-wiggle-wiggle the section out very gently, just a fraction of a side to side movement at a time until you feel it start to give. Too much pressure from side to side will crack the barrel threads, so you need to be patient.