I've got also what I think is a doric pen, but the slider clip is different, no 'hole' and it says eversharp W.
It was forgotten years ago, and its kind of an heirloom, that I just got.
So, the ink has dried out and I think either needs just silicon gel/grease or it needs new rubber parts (hope not), and I'm trying to clean it.
I'm from Portugal, there's no repair shop here so, although I'm really bad at it, I need to do it myself.
Can you please send me that manual? Although different, I think its a doric and it would help a lot!
I have the factory repair manual pages for this repair (dis-assembly and reassembly) if you need it. But the things you will need are:
Tiny needle-nose pliers or tweezers to remove the spring that controls the movement of the shut-off mechanism
Father Terry's 2 tined screwdriver tool to unscrew the gasket retainer
Replacement gasket for the the plunger-rod
New packing felt and rubber washers if the packing unit at the end of the barrel needs to be replaced
Small flat smooth parallel jaw pliers to grip the blind cap retaining nut
Packing felt and rubber washer
A lot of patience and some decent fine motor skills
From memory, here is the procedure:
1) remove the section (it unscrews on vacuum models - counter-clockwise
2) remove the blind barrel cap (hold the retaining nut still with the pliers, and unscrew the blind cap with your other hand)
3) remove the blind barrel cap retaining nut from the plunger shaft end
4) push the shaft into the barrel from the blind cap end and out of the mouth of the barrel
5) use the 2 tined screwdriver tool to remove the gasket retaining cap
6) remove the old gasket if still there.
7) replace the gasket with a new one
8) replace the retaining screw with the 2 tined screwdriver tool
9) insert the shaft back into the mouth of the barel and sending the threaded end of the shaft up and through the packing unit then replace the retaining nut and the blind cap.
10) For the amateur: if the packing unit is not tight enough around the plunger shaft to make a good air-tight seal you will need to replace the felt inside the packing unit. getting the old packing unit out is a bear and many folks opt for either a rubber gasket/washer placed inside the barrel against the bottom of the packing unit, or tiny "o" ring placed on top of the packing unit. Problem with the latter is that the "o" ring takes up too much lock down thread space on the blind cap and sometimes the blind cap stands proud of its normal seated position. But it is a cheap and easy fix. The other option is to remove the innards of the packing unit and replace it with o-ring held in place by a nylon spacer but that is really a professional's area of expertise.
11) Remove the personal point assembly from the section (unscrew it)
12) Remove the spring from the shut-off mechanism (careful!! the spring is tiny and if it shoots loose from the tweezers, it may be almost impossible to find.) The spring is accessible through the window in the collar of the personal point assembly. Now you can knock out the nib and feed and the shut off by using a knock out rod with a concave end so as to not damage the shut off cone in the knock out process.
13) Look inside and see if the shut-off gasket is still there and remove the old gasket and replace with a new one. (the failure of this gasket is the reason why the shut-off mechanism failed over time. It needs to be replaced every four or five years.
14) Now the nib, feed and shut-off are free for cleaning
15)Re-assemble the nib, feed and shut-off device back into the personal point collar, replace the shut off spring.
16) Look at the thread area of the section. There should be a hard rubber cross-bar for the plunger rod end to strike and be forced off-center to break the fill vacuum.
17) if it is missing or broken (usually the case on older unrestored pens), replace it.
18) reverse the procedure to reassemble.
It will take a pro about 30 minutes to do all this if the packing unit is not removed. If this sounds like a bit too much, send it to a pro. Ahem.
Edited by ribeirse, 18 April 2017 - 11:44.