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  1. #1
    Dex
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    Stuck/froze thru-pin on a frame shock

    I'm trying to remove this Fox Frame Shock to rebuild it.
    I was able to hammer out the larger thru-pint.

    But the smaller thru-pin will not loosen up.



    I've got it saturated with a very light oil.
    I've tried hammering it out with a threaded bolt partially screwed in on one end with the other end suspended by wood blocks.
    I then tried pulling the pin by using a threaded bolt through a socket.
    I even put needle nose vise grips on the reducers and tried to spin the pin using a threaded bolt that fit inside the mounting holes and seated on top of the pin only thing that did was make a mess out of the reducers.

    Could try this technique.
    Removing rear shock from my frame - it's stuck!

    If I could atleast cut off one side of the pin I could get the shock off and try to hammer the rest of the pin out on a vise.

    Anyone have any better suggestions?
    Last edited by Dex; 02-08-2013 at 03:24 PM.
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  2. #2
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    Mouse Milk, Liquid Wrench, pretty much any good penetrating oil and some time..
    the info on that link looks like the right path and makes a good argument towards keeping anti-sieze fresh on them pivots
    I wouldn't cut anything unless I had to.

  3. #3
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    Do you have enough room to get a small ratchet clamp around it? You can place a large socket on one side, a smaller one on the other; then use the clamp to push the pin out into the larger socket.

    Edit: You can also screw a bolt into the threaded end to push against, as opposed to the small socket I suggested above.
    Last edited by splatworldwide; 02-08-2013 at 02:06 PM.
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  4. #4
    The Bubble Wrap Hysteria
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    It appears to be galvanic corrosion which DW40 and other types of lubricants is rendered useless. You will have to use a mechanical method to remove that fastener and pin. How often did you remove that hardware for inspection?

  5. #5
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    Pressing frozen pins is the way to go. Hammering just puts stress on the fasteners and all associated parts. If you do a search someone just had the same issue. Sometimes it is a good idea to concede and let a machine shop or LBS w/ experience handle these extractions.

  6. #6
    Dex
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    1st off, I would like to thank everybody for their suggestions.

    This evening I saturated the pin with Dupont Penetrating oil and used a C-clamp with a bolt partially screwed in one end of the pin and with a socket on the other end of the pin .
    Nothing!

    Quote Originally Posted by mtnbiker4life View Post
    It appears to be galvanic corrosion which DW40 and other types of lubricants is rendered useless. You will have to use a mechanical method to remove that fastener and pin. How often did you remove that hardware for inspection?
    This is a used Iron Horse frame that I bought a few weeks ago.

    I bought it and an 06 S-Works Stumpjumper after the frame to my Haro V4 cracked.

    Luckily I was able to build up the S-works with all the components from my Haro.


    So, I'm intending to build this IH frame up as an extra bike and I figured this would be a good time to learn how to rebuild a Fox Shock.

    No major loss if I destroy the frame, but that is not my intentions.

    I'll definitely inspect and lubricate the pins on the S-Works.
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  7. #7
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    Keep soaking it with p-oil. Don't rush it. And keep monkeys away from it.
    Keen is right about pressing it instead of hammering.
    It might take weeks for the p-oil to penetrate.
    If there is any movement at any of the parts. Take advantage of it.
    I used to work in a museum taking apart stuff that had sat for decades.
    Sometimes underwater.
    It was much more fun putting them back together.

  8. #8
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    Use CRC Freeze off. Im a professional mechanic (cars, not bikes.. but still) and have used a lot of stuff, but nothing seems to work nearly as well as freeze off.

    A c clamp and socket should generate enough force to break that bolt in half.. id keep trying with that, it'll work.

  9. #9
    Dex
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    Still trying, but no luck!


    Even putting a hacksaw to the reducers (tophats) hasn't helped


    I'm just making a freaking mess of things.
    Last edited by Dex; 02-12-2013 at 03:53 PM.
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  10. #10
    Dex
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    I took the frame and shock by 2 bike stores and neither store was able to remove it.

    So I found a machine shop.
    The guy there had to cut off one end of the thru-pin to remove the shock from the frame and then with great force using a mechanical press he was able force the pin out.


    I was able to remove the reducers with a pair of vise grips.


    The bushing inside the shock only needed a little cleaning.
    So I'm not removing/replacing it nor the larger reducers.
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  11. #11
    Dex
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    update

    Well the back ordered reducers / top hats finally arrived.
    So I was able to finally get the shock back onto the frame.


    I used a 8mm x 30mm bolt and a lock nut for the thru pin.
    The threaded part of the bolt that will be running though the reducers could cause wear inside the reducer, but it will be OK for now
    Last edited by Dex; 03-08-2013 at 04:55 AM.
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  12. #12
    Dex
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    Here is the 07 IH Azure rebuilt and ready to hit the trails



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