myopic
New Questions.......
Posts: 12
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Post by myopic on May 28, 2014 19:46:19 GMT
Tried to remove my shock last night to change bushings. Bottom one linking to the linkage came out no problem, but the top one... The male bolt came out fine, but the female bolt will not come out of the shock or the frame. Its turns, but is very stiff. I think it has stuck to the aluminium top hats that sit inside the shock mount bushings as these are turning with the bolt. These are holding it in place and I cannot remove the bolt or the shock. I have tried driving it out by tapping with an appropriately sized socket, no good. Also tried screwing the male bolt back in and tapping this, this also failed. I tapped as hard as I dared without risking damaging the bolts or shock mounts on the frame. Anyone got any ideas about how to get this out? And to prevent recurrence? The obvious solution is to grease it, but that will just attract grit
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Post by Andrew on May 28, 2014 20:05:48 GMT
Dead blow hammer and the good old yeti guide pin tool.
Never fails.
Experienced this before.
The outside of the pin should be lightly greased when being assembled, to stop the metals reacting and causing what you have. Just a light coating is enough.
Hope that helps!
Andrew
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myopic
New Questions.......
Posts: 12
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Post by myopic on May 28, 2014 20:54:35 GMT
Great thanks Andrew! How hard can you whack it?
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Post by Andrew on May 28, 2014 21:40:21 GMT
I've hit them quite hard before.
You should be careful on damaging the frame the opposite side you are hitting though. Try to support it, ie. lie it down with a lump of wood near to the bolt head. Cover the wood with something to stop it marking the frame though!
Try putting some oil inside, anything will help!
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Post by climberdave on May 29, 2014 15:53:10 GMT
The Yeti guide pin tool is worth the money! It makes removing and reassembling the suspension linkage on the bike soooo much easier (especially where the shock, rear triangle and dog bone converge).
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Post by rocketmagnet on May 29, 2014 22:11:34 GMT
Yeah I can recommend the guide tool also.
I'd use some penetrating oil or WD40 and let it soak then repeat for a few hours then if you've got the patience let it soak overnight.
A good technique once its spinning a bit more freely is to inset the hex key, spin it while trying to pull out the hex key and apply a bit of up/down force for a bit of friction to prevent the key just coming out... if its rotating it should spin out slowly with this method.
This always works for me but I do have the tool and use it normally... The spin and slight pull works on frame bolts on my 66 every time
just take patience.
A DANGEROUS RISKY METHOD is to use a long bolt the same as the male - screw it in and give it a LIGHT tap to get it started then spin/pull it out assisted with vey light taps on the male bolt.
Note your putting pressure on the threads of the female bolt doing this hence it's a risky thing to do.
Be very surprised if spin/pulling with oil soaks doesn't work but I'd invest in the tool it's cheap and is more useful as it helps
line stuff up putting the shock back on.
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Post by climberdave on Jun 3, 2014 16:38:08 GMT
I actually use the pin to remove the bolts too. The top of the pin is smaller and fits nicely inside the female portion of the bolt (the rest of the pin is the same diameter as the outside of the bolt so not to mess up the threads). Just insert the guide pin and gently tap the bolt out with dead blow or rubber hammer. When the bolt is out the pin is in and the bike doesn't fall apart (unless you need to remove more than one bolt at a time). Anyway, the tool really helps.
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myopic
New Questions.......
Posts: 12
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Post by myopic on Jul 23, 2014 17:58:19 GMT
Well it took a while to get round to it, but it's done now! Thanks for the tips, guys  Got a new problem now - but I'll start another thread for that |
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