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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  help removing seized bolts
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Author Topic: help removing seized bolts  (Read 725 times)

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losidan

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help removing seized bolts
« on: March 27, 2008, 06:57 PM »
Hi,

one of the bolts into the bb axle on my cranks is seized in...I cant get the begger out and I was wondering what methods anyone else uses to get a seized bolt out?

any help much appreciated

Offline meticulous

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Re: help removing seized bolts
« Reply #1 on: March 27, 2008, 07:26 PM »
you can try the wd40 or heating it up method, sometimes the shock from a sharp bang with a lump hammer, :daumenhoch:last resort try to cut off with a dremel
R.I.P  O.M. Far short of the finish line...

lodge

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Re: help removing seized bolts
« Reply #2 on: March 27, 2008, 07:29 PM »
Is it sheared/rounded or just wont budge?

losidan

  • Guest
Re: help removing seized bolts
« Reply #3 on: March 27, 2008, 07:37 PM »
it just wont budge mate...it is starting to get a little rounded is the hex too so i dont want to do it too much in case i knack it completely.

Offline MartyC

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Re: help removing seized bolts
« Reply #4 on: March 27, 2008, 07:45 PM »
Get a flat punch and give it a good whack with a hammer on the centre of the bolt to break the "weld" whre the two metals have seized if that fails get some diesel and pour it in and leave for a few days to soak before trying the punch again and then the right sized socket wrench  :daumenhoch:.

Marty  :)


Better to crash and burn than fade away

Offline oberonspacefruit

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Re: help removing seized bolts
« Reply #5 on: March 27, 2008, 07:57 PM »
liquid wrench dimantling spray, marketed as plusgas in the uk.
I want to touch ORB

2020mad

  • Guest
Re: help removing seized bolts
« Reply #6 on: March 27, 2008, 08:30 PM »
soak a rag in coke (not cheap crap) wrap around bolt and make sure its well soaked and leave on until morning.  :daumenhoch:

Goose1

  • Guest
Re: help removing seized bolts
« Reply #7 on: March 27, 2008, 08:35 PM »
Get a flat punch and give it a good whack with a hammer on the centre of the bolt to break the "weld" whre the two metals have seized if that fails get some diesel and pour it in and leave for a few days to soak before trying the punch again and then the right sized socket wrench  :daumenhoch:.

Marty  :)

Or try and give it a little tighten and then undo.

AxlFoley

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Re: help removing seized bolts
« Reply #8 on: March 27, 2008, 08:48 PM »
I was about to say that :P


Offline lazychubs

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Re: help removing seized bolts
« Reply #9 on: March 27, 2008, 10:47 PM »
or get a socket that use the whole nut to undo and not just the edges
has a special name but im a tad drunkerd tonight
and cant remember it lol

vdubferret

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Re: help removing seized bolts
« Reply #10 on: March 28, 2008, 07:09 AM »
Diesel!  ;)

Offline TwoBobRob

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Re: help removing seized bolts
« Reply #11 on: March 28, 2008, 09:58 PM »
All of the above.  I think Lazychubs is on about a flank drive socket. You want to be using a six sided socket rather than a twelve anyway as they will handle/transmit more force.

Try an impact driver too. They're very effective if used properly. You deffo want a six sided socket for that though   ;)

Last resort is to snap the head off completely (that allows you to dismantle everything) then drill the remains of the bolt out of the axle as a little job in a vice.




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