RADBMX.CO.UK

Technical & Reference Section => Tech and Restoration => Topic started by: losidan on March 27, 2008, 06:57 PM

Title: help removing seized bolts
Post by: losidan 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
Title: Re: help removing seized bolts
Post by: meticulous 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
Title: Re: help removing seized bolts
Post by: lodge on March 27, 2008, 07:29 PM: Is it sheared/rounded or just wont budge?
Title: Re: help removing seized bolts
Post by: losidan 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.
Title: Re: help removing seized bolts
Post by: MartyC 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 :)
Title: Re: help removing seized bolts
Post by: oberonspacefruit on March 27, 2008, 07:57 PM: liquid wrench dimantling spray, marketed as plusgas in the uk.
Title: Re: help removing seized bolts
Post by: 2020mad 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:
Title: Re: help removing seized bolts
Post by: Goose1 on March 27, 2008, 08:35 PM: Quote from: MartyC 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 :)

Or try and give it a little tighten and then undo.
Title: Re: help removing seized bolts
Post by: AxlFoley on March 27, 2008, 08:48 PM: I was about to say that :P
Title: Re: help removing seized bolts
Post by: lazychubs 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
Title: Re: help removing seized bolts
Post by: vdubferret on March 28, 2008, 07:09 AM: Diesel! ;)
Title: Re: help removing seized bolts
Post by: TwoBobRob 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.