M800 M1000 Piston Filler Unit: Under The Hood.

[hari317]

Hi Hari!

 

Thanks for the tutorial, if I may add though. I noticed that there's a piece of brass still showing through. M800s are my main collection and I've double-checked all of them to see that the grip is flushed on the body.. I've attached some photos to show I mean.

 

My suggestion is:

1) Unscrew the piston fully

2) Insert the wrench

3) Try to close the piston until you hit the wrench

4) Tighten the wrench/piston assembly further

5) Remove the wrench and see if everything's perfect now

 

I use TWSBI wrenches which is fairly thin so I usually don't encounter any problems with step (3)..

 

This usually happens when the piston is over-extended that you can't properly screw the whole assembly to the body. Though the first part of your tutorial is great and I've learned something new with it

 

Hi Duran, Good observation. The barrel I have shown for example in this thread has a damaged binde. Heat shrunk and split. The binde has shrunk a little which is why you see the gap in the second pic you attached. There is a machined step inside the filler end of the barrel so that you can easily tighten the filler "finger tight". Take care not to over torque it or you will end up with a split barrel.

 

One good test to see if the installation is OK, is to hold the end against a strong light, no sliver of light should be seen.

 

HTH

 

Hari

Edited April 12, 2013 by hari317

[dduran]

Oh I have to agree, finger tight should be enough. The assembly might be metal but its easy to destroy the barrel threads. Wouldn't recommend dissassembly unless absolutely needed (or you haven't done it at least once, hehehe) because these aren't really designed to be opened frequently. Actually I saw an old video of how M800s are made and they put a weak bonding agent in the piston threads (me thinks)

[georges zaslavsky]

thanks for the heads up

[setriode]

Hari,

 

Bless you. I have just completed my m800 service and lubrication using this set of instructions.

 

After noticing that my piston was not as smooth as it should be, I used accessories that came with a TWSBI; all to fabulous effect. Re-assembly became a problem until I found this thread.

 

I have had the pen for many years and it has been a while since the last manufacturer's service which nowadays costs a sum of money which allows one to buy another Pelikan, say, a 200 which I did yesterday.

[proton007]

Thanks Hari!

Very clear and informative pictures.

[mirosc]

I just discovered this thread now.

Great! Really well done with superb pictures.

 

Thank you very much!

[michelim]

Great topic! Thanks for sharing!

[fredfelcher]

Thank you for the excellent photos and write-up Hari. This gave the confidence to strip down my M805 and lube the piston, without fear of the unknown! Slightly nervous and cautious but a good result, so thanks again.

[mAsTeRmInD-L]

That's really helpful! I may change the turning knob soon. This post is just what I need!

 

- L

[JordanLH]

Thanks for the super-informative post!

[PatientType]

Also applauding....

Very informative.

[Morbus Curiositas]

Wow Hari you are a Fountain Pen magician... Pelikan could not make a better repair manual I believe....

 

But er I leave my M800 in one piece when it works fine.... there are people who like taking fountain pens apart for the joy of it....

 

 

May be a moderator could pin this topic... This way it can be foud easily when needed

 

Thanks Hari

[esojay]

Hari,

My Pelikan M1005 filler unit started misbehaving a couple weeks ago, and I needed to know how to fix it. Thanks to your posting, I was able to do the work myself. Thank you so much!! Your photos were invaluable and very helpful, as were the step-by-step instructions.

[hari317]

Thank you all for your kind comments. I am glad that many are finding the writeup useful.

 

Regards

Hari

[pensacolablackjazmyn]

Excellent job describing

and great pictures of the FP learned a ot.

Thanks

Nirmal Singh, MD

pensacola, FL

[PatientType]

One after thought particularly to those reading this thread that may be newer Pelikan users. If you have a sticky ink plunger, lubricating the Pelikan piston can be done far more easily than disassembling the plunger assembly. Just removing the nib and applying a (very) tiny dab of silicon to the edges of the ink piston seal using a toothpick. Then just open and close the piston a few times with no ink and the piston will move much smoother.

[hari317]

One after thought particularly to those reading this thread that may be newer Pelikan users. If you have a sticky ink plunger, lubricating the Pelikan piston can be done far more easily than disassembling the plunger assembly. Just removing the nib and applying a (very) tiny dab of silicon to the edges of the ink piston seal using a toothpick. Then just open and close the piston a few times with no ink and the piston will move much smoother.

True. No need to take apart your pen if you just have to free a sticky piston. In fact, for the average user, they never should need to take apart any pen.

Edited March 29, 2015 by hari317

[sargetalon]

True. No need to take apart your pen if you just have to free a sticky piston. In fact, for the average user, they never should need to take apart any pen.

 

 

+1. This seems to have come up a lot lately in various places and I feel strongly about this. Just because something can be taken apart does not mean that it should be.

 

But this is a great thread hari317 and worth bookmarking. Thanks for originally sharing.

Edited March 30, 2015 by sargetalon

[caoquocdat]

l lost anti rotation bush, how i can fix it, i cant send it to pelikan service, please help me!

[hari317]

The pdf version of the original post alongwith the missing pictures is now available for download at the following link.

 

https://ia601509.us.archive.org/21/items/M800M1000PistonFillerUnitUnderTheHood/M800%20M1000%20Piston%20Filler%20Unit-Under%20The%20Hood.pdf

 

HTH

Hari