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MarkT Exhaust
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Author Topic: Stuck Dowel Pin  (Read 1359 times)
Tarkus
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Posts: 91


New Caney, TX


« on: April 29, 2017, 04:03:44 PM »

Hello all.
I'm in the process of rebuilding the carbs on a 98 standard. I'm using the Red eye kit that includes the nylon replacement dowels...you know the kind that don't stick.  When it came time to remove the original metal dowels, the shorter length dowels proved to be very stubborn.  There's just not enough of it protruding to get good hold of.  So I used the technique of inserting a metal rod through the dowel and using lock pliers to twist them out.  It worked pretty good for all but one.  Repeated attempts on that one have failed.  At this point the end of the dowel pin is too far gone, so I need to find another way. 
 
I know that there are various types of taps and extractor tools available. I figure that may be my next best shot.  But I'm not sure what exactly would be the most effective in this particular case...and I'm a little concerned about making matters even worse.  I guess my last option would be to take it to a professional.  But that would really irk me.  Hope it doesn't come to that.
 
Take a gander at the photos.  I included a normal looking dowel for perspective.  Any helpful guidance is greatly appreciated.  Thanks in advance.



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Conformity is doing what everyone else is doing, regardless of what is right.

Morality is doing what is right regardless of what everyone else is doing.
Avanti
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Posts: 1403


Stoughton, Wisconsin


« Reply #1 on: April 29, 2017, 05:22:42 PM »

File the distorted top off the dowel pin so it is flat but not all the way to the carburetor housing. Measure inside diameter of a good dowel pin. Use the appropriate size bottoming tap and tap threads inside of the dowel pin. Use a bolt with long enough threads and a collar over threads and a nut on top to pull it up through the collar by holding the bolt head while turning the nut. Trying to describe how to make a small puller. A picture would be better I am sure! 
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Tarkus
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Posts: 91


New Caney, TX


« Reply #2 on: April 29, 2017, 07:23:34 PM »

Thanks Avanti. Sounds like this is what you're trying to describe. https://forums.nasioc.com/forums/showpost.php?p=36005093&postcount=2

I'm also wondering if a spiral extractor like this might work:https://mobileimages.lowes.com/product/converted/099198/099198899770.jpg Seems like it should. Any thoughts?
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Conformity is doing what everyone else is doing, regardless of what is right.

Morality is doing what is right regardless of what everyone else is doing.
BudMan
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"Two's in."

Tecumseh OK


« Reply #3 on: April 29, 2017, 08:11:33 PM »

I just had that EXACT problem with one of the dowels on my carbs. I took a piece of drill stem that matched the internal diameter of the dowel and forced it in the exposed end of the dowel. With the drill stem in side the dowel I was able to put enough force on the dowel to turn it and break it free and twist it out of the carb. I also had SeliKrol lubricant as well as Liquid Wrench on it for several hours. The end of my dowel looked about like yours does now. It worked for me!
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Buddy
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Avanti
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Posts: 1403


Stoughton, Wisconsin


« Reply #4 on: April 29, 2017, 08:27:07 PM »

Thanks Avanti. Sounds like this is what you're trying to describe. https://forums.nasioc.com/forums/showpost.php?p=36005093&postcount=2

I'm also wondering if a spiral extractor like this might work:https://mobileimages.lowes.com/product/converted/099198/099198899770.jpg Seems like it should. Any thoughts?


Do Not use a spiral extractor (easy out) they can cause to much external pressure which could brake the carburetor housing!!

Yes, the first method is the proper and safe way.
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gordonv
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VRCC # 31419

Richmond BC


« Reply #5 on: April 29, 2017, 09:51:37 PM »

Its small enough to fit in the freezer, how about that over night, then try to pull again?
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pais
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Posts: 723


One more turn should do it!

Kent, Ohio


« Reply #6 on: April 30, 2017, 06:01:07 AM »

Its small enough to fit in the freezer, how about that over night, then try to pull again?


    cooldude
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Brian
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Posts: 996


Monroe, NC


« Reply #7 on: May 02, 2017, 03:17:42 AM »

Just a thought here, start a thread cutting tap into it making a few threads, leave the tap in place or screw in a bolt, then take an appropriate size rod or drift pin and start knocking it out from the opposite side. You could also try drilling it out by using bits just slightly smaller the outside diameter to make the wall of the dowel thinner in hopes of then being able to collapse it in. And/or an old plumbing trick that I used, that is to cut through the wall with a small 3 corner file the length of the dowel, once through the wall the dowel can be collapsed inward and then pulled out.

Here is a good example that the engineers at mother Honda made a mistake.

No matter what why you try, take your time. Good luck,
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