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Thread: MB 146 piston service

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    Default MB 146 piston service

    Can someone recommend a good repair person to service or repair my MB 146? The piston is very hard to turn.
    Thanks

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    Default Re: MB 146 piston service

    Quote Originally Posted by RonLyke View Post
    Can someone recommend a good repair person to service or repair my MB 146? The piston is very hard to turn.
    Thanks
    You might find this video to be of interest..........
    https://www.youtube.com/watch?v=vKge7uVqOEo

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    Default Re: MB 146 piston service

    I was very surprised to see a repair person applying all of that silicone grease to the feed and feed channels. I take great care to only grease threads and ensure I get no grease anywhere near the actual route that the ink will take out of the nib.

    I wish he had tried inking up that 149 and writing with it because I'm not sure it would have written very well if at all.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: MB 146 piston service

    Agree! I remember thinking that he used more silicone grease on that one pen than I tend to use in a month!!

    I did think, however, that the video was a good resource for someone who was interested in doing the work themself.
    It really is a very simple, easy process.

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    Default Re: MB 146 piston service

    Good disassembly video, bad silicon grease advice.

    Silicon grease is primarily to keep O-rings from binding, or applications where you need a food-safe lubricant. It's not a sealant.

    The first reason is why it works well in many pen applications. A little on the piston, and a little on the threaded shaft; and it'll be good for decades.

    For the OP - there can be other causes, but lack of lube is the most common. If you're not comfortable taking it apart, it should be a simple fix for any repairman. Montblanc will service the entire pen for a fee.
    "A truth does not mind being questioned. A lie does not like being challenged."

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    Default Re: MB 146 piston service

    A good silicone grease for this is Molykote 111. It's designed for 0-rings, and designed to resist washing it off. It's what I've used for years, and is what I have on the website. As noted, apply to the seal, and keep it on the edge and behind the seal so that it does not transfer to the feed. We very often find it in globs in a pen. Not needed - a little goes a very long way!

    I had a Boheme in the shop a few months back that wouldn't write. Someone had slathered silicone grease in the mechanism and it got into the feed. No wonder it didn't write! Once cleaned well, including the piercing tube and feed, it wrote well.

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    Default Re: MB 146 piston service

    Quote Originally Posted by Ron Z View Post
    A good silicone grease for this is Molykote 111. It's designed for 0-rings, and designed to resist washing it off. It's what I've used for years, and is what I have on the website. As noted, apply to the seal, and keep it on the edge and behind the seal so that it does not transfer to the feed. We very often find it in globs in a pen. Not needed - a little goes a very long way!

    I had a Boheme in the shop a few months back that wouldn't write. Someone had slathered silicone grease in the mechanism and it got into the feed. No wonder it didn't write! Once cleaned well, including the piercing tube and feed, it wrote well.
    Agree 100%+++ The Molykote 111 is by far and away the best silicone grease money can buy.
    Made by Dow Corning, this is the stuff that the US Navy Seals use for their diving equipment.
    A 5.3 oz tube is easily available and very inexpensive. It will last forever! As that old "Brylcreem" jingle used to go....."A Little Dab'll Do Ya!"
    Highly recommended!!

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    Default Re: MB 146 piston service

    It may be easier and less expensive to get in the US than it is to get in the UK.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: MB 146 piston service

    Quote Originally Posted by Chrissy View Post
    It may be easier and less expensive to get in the US than it is to get in the UK.
    £4.59 posted Enough to last longer than me.
    Add Lightness and Simplicate

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    Default Re: MB 146 piston service

    Quote Originally Posted by Ron Z View Post
    A good silicone grease for this is Molykote 111. It's designed for 0-rings, and designed to resist washing it off. It's what I've used for years, and is what I have on the website. As noted, apply to the seal, and keep it on the edge and behind the seal so that it does not transfer to the feed. We very often find it in globs in a pen. Not needed - a little goes a very long way!

    I had a Boheme in the shop a few months back that wouldn't write. Someone had slathered silicone grease in the mechanism and it got into the feed. No wonder it didn't write! Once cleaned well, including the piercing tube and feed, it wrote well.
    Sometimes I feel sorry for the pen, not the nitwit owner.

    We are lucky that there are so many new products out there, when I first needed silicone grease for an eye dropper, last century stuff here, there was nothing else around than from a plumbers merchants, that little 2oz tin lasted a long time but now relegated to its intended function.

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    Default Re: MB 146 piston service

    Quote Originally Posted by karmachanic View Post
    Quote Originally Posted by Chrissy View Post
    It may be easier and less expensive to get in the US than it is to get in the UK.
    £4.59 posted Enough to last longer than me.
    I have been searching ebay and Amazon and saw the listing that you referenced here. However, the title is a bit confusing and the item pictured is not Molykote 111 tube 100grams. It's actually a listing for a different product from Molykote called TP-42 anti seize paste weighing 10g in a small pot, so I didn't think it was exactly the same as Molykote 111. I have now found some that is actually called and pictured as Molykote 111 Silicone Grease.
    Last edited by Chrissy; July 4th, 2023 at 02:20 PM.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: MB 146 piston service

    Thanks to all of you for your comments.

    Ron

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    Default Re: MB 146 piston service

    The pen will be sent out today to a repairman we all know.

    I don't understand why this happened. I haven't used any weird ink. I know there's a well known brand that has been controversial, but it's still selling in large numbers. Sometimes people say that only pen manufacturer's ink should be used, but that seems a bit harsh. I wonder if I didn't clean thoroughly before changing inks. Could two inks react in a way that would freeze up a piston?
    Just rambling out of frustration.

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    Default Re: MB 146 piston service

    Quote Originally Posted by RonLyke View Post
    The pen will be sent out today to a repairman we all know.

    I don't understand why this happened. I haven't used any weird ink. I know there's a well known brand that has been controversial, but it's still selling in large numbers. Sometimes people say that only pen manufacturer's ink should be used, but that seems a bit harsh. I wonder if I didn't clean thoroughly before changing inks. Could two inks react in a way that would freeze up a piston?
    Just rambling out of frustration.
    I had a 146, in 2012 I had a similar problem with the piston, the feed was also blocked and the ink window was also stained. I worked quite near to an MB boutique and took it in for repair. The first question I was asked was have I only been using MB ink, I hadn't but kept quiet. I had been using a dark purple from Diamine.

    The manager looked at the pen and said he would send it off for a service, MB sorted it all out including a new barrel.

    I haven't used my MBs for a while but will keep to MB inks, I have a new bottle of Blue Hour that will be a good match.

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    Default Re: MB 146 piston service

    The piston seals do dry out and stick after a while. Pelikans are easy to lubricate on occasion because the nib units unscrew. But you have to open up the back end and remove the mechanism on a Montblanc, which is perhaps better because you apply the silicone grease to the seal and not the barrel wall. I also see seals that are scored and worn after years of use, allowing the ink to get in around and behind the seal.

    THE manufacturer's ink shouldn't be necessary, but I do recommend use ink made by a pen manufacturer. I use Pelikan, part because it's good ink, part because I like the color. Diamine is one of the safer non-manufacturer made inks. Note that pen flushes can also wash away some of the lubricant. Flushing with water is all that's needed unless the pen is clogged/has dried ink in it, or you are putting the pen away for a while. But if just refilling the pen with the same ink, cycling the piston a couple of times is I think the only "flushing" that is needed.

    Visit Main Street Pens
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    Please contact us by email, and not PM for repair inquiries.

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    Default Re: MB 146 piston service

    Quote Originally Posted by RonLyke View Post
    The pen will be sent out today to a repairman we all know.
    Good luck with that........
    Do let us know the outcome.

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    Default Re: MB 146 piston service

    I’m told it will probably take at least 12 weeks. Not to worry—I have other pens.

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    Default Re: MB 146 piston service

    Quote Originally Posted by Ron Z View Post
    The piston seals do dry out and stick after a while. Pelikans are easy to lubricate on occasion because the nib units unscrew. But you have to open up the back end and remove the mechanism on a Montblanc, which is perhaps better because you apply the silicone grease to the seal and not the barrel wall. I also see seals that are scored and worn after years of use, allowing the ink to get in around and behind the seal.

    THE manufacturer's ink shouldn't be necessary, but I do recommend use ink made by a pen manufacturer. I use Pelikan, part because it's good ink, part because I like the color. Diamine is one of the safer non-manufacturer made inks. Note that pen flushes can also wash away some of the lubricant. Flushing with water is all that's needed unless the pen is clogged/has dried ink in it, or you are putting the pen away for a while. But if just refilling the pen with the same ink, cycling the piston a couple of times is I think the only "flushing" that is needed.
    I learned that, much to my displeasure. Luckily it was just a TWSBI Eco.
    My other pen is a Montblanc.

    And my other blog is a tumblr!


    And my latest ebook, for spooky wintery reading:

    https://www.amazon.com/gp/product/B0CM2NGSSD

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    Default Re: MB 146 piston service

    Quote Originally Posted by RonLyke View Post
    I’m told it will probably take at least 12 weeks. Not to worry—I have other pens.
    Ouch!
    Well, I admire your attitude & approach. I'll bet some of those other pens have been longing for your attention!!

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    Default Re: MB 146 piston service

    Quote Originally Posted by 724Seney View Post
    Quote Originally Posted by RonLyke View Post
    I’m told it will probably take at least 12 weeks. Not to worry—I have other pens.
    Ouch!
    Well, I admire your attitude & approach. I'll bet some of those other pens have been longing for your attention!!
    They have indeed. Maybe someday I'll learn to fill only part way so I can use more pens.

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