Snapped Bolt Removal?!

[HD]

HHHEEEEEELLLLLPPPP


Got a bolt stuck in my bike. Well two, actually. Both have snapped as the bolt are old.

They head have snapped off and the bolts are flush to the surface, so I can't get any purchase with pliers or vice grips.

Any ideas of how to remove them?

Picture of one here:

https://i1126.photobucket.com/albums/l618/HDrayton7/Suzuki%20Bandit%20400%20Project/IMAG0449.jpg
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Rusty '02 Vito Camper + CBR600F3

[snowsurfer]

drill it then use a screw extractor, no other way unfortunately unless its loose, if its loose then you should be able to work it out with a precision screwdriver and a hammer, but lets face it if it was loose it wouldnt have sheered

good luck
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Past Bike: 07 Honda xr125l
Current Bike: 99 Yamaha Fazer 600

[Chris750]

I have had very similar issues recently and I solved the problem with screw extractors. You can buy a set from screw fix for a few quid.
You need to drill a small pilot hole into the centre of the bolt (doesn't need to be that deep).

Then you screw the extractors into them. They screw the opposite way to normal so that the are working to loosen the bolts as they screw in and "bite".

They give a really good purchase on the bolts and allowed me to get several bolts out of my carbs when everything else failed.



Edit: beaten to it
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Current Rides: GSXR-750 WS, GSXR-1000 K5, KTM EXC 300

[HD]

Their site is currently down, typical.

Cheers though lads
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Rusty '02 Vito Camper + CBR600F3

[Raffles]

I'm betting that HD's next thread will be: Does Anyone Know How To Remove A Broken Screw Extractor?

BTW Why is this thread in general bike chat?
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A good loser will always be a loser.

[HD]

Haha, hope not!


And cos I thought about workshop, but then thought it would get a quicker response in here and other people may have stuck bolts and are more likely to see it. Method in the madness
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Rusty '02 Vito Camper + CBR600F3

[snowsurfer]

couple of tips for using screw extractors:

1. drill the hole as big and deep as you can without damaging the thread of the original hole, if its an old tough bolt then your gonni need as much leverage as possible, best not having a small shallow hole

2. be careful (as in super mega hyper careful) when using the screw extractor, once it bites screw it slowly and in small movements until the bolt is loose and turning freely. as raffles said you do not!!! want to snap the screw extractor in the screw, not good, half decent screw extractors are made of toughened steel, drill bits dont like drilling into them, it would be a nightmare!
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Past Bike: 07 Honda xr125l
Current Bike: 99 Yamaha Fazer 600

[HD]

Haha, imagine that. Screw extracting a screw extractor screw extracing a screw

And I take it you take the bolt all the way out? Or just undo the chuck and take the bolt out by hand as you have some length there now?
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Rusty '02 Vito Camper + CBR600F3

[Vincent]

Can you go in with a drill from the other end? If so, the stud might just unscrew itself.
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Space Is Deep

[.....]

Could always try a left hand drill bit in the hope the screw comes out as you drill it.

[Vincent]

[DrDonnyBrago]

If it is seized enough that the head snaps off it is almost certainly too seized for a screw extractor.

[Pete.]

[Chris750]

[HD]

Yeah, snapped both bolts when tightening.

One is in the top yoke (speedo mount) and the other is the bottom yoke (horn mount)
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Rusty '02 Vito Camper + CBR600F3

[Vincent]

[HD]

With the horn, ill just try the stud extractor and if it fucks up then ill mount it elsewhere.

With the speedo, ill try to extract it but worst come to worst ill leave it like it is atm. I have done the other mounts and just wedged a small spacer under it to stop wobbling.
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Rusty '02 Vito Camper + CBR600F3

[Pete.]

[truslack]

Just drill down the middle of the bolt a few times, increasing drill bit size by .5mm each time until the bolt will crumble out.
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Current: Suzuki RG 125 Gamma, Honda H100, Triumph Tiger 800XC, Suzuki SV650 (minitwin)

[serlant]

If you take the offending pieces off (bottom yoke)? and bring it round mine i'll have a go at drilling out for you.
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)

[Welshd1k]

Rigid / snap on / blue point easy outs such a usefull bit of kit lost count of how many times i have used them
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

[HD]

I get paid a week tomorrow, so Ill have a go with those extractors. Will be handy tool to keep anyway.

If I can't do it all, ill drop over serlant
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Rusty '02 Vito Camper + CBR600F3

[bike-shack.com]

A couple of times I've fired up a Mig welder and welded a blob on the end of the snapped bolt, this gives you something to use mole grips on and the heat usually loosens it too! Its been more successul than my previous attempts at drilling and extracting which usually turn into a mess!

Obviously this method isn't suitable for all locations and materials!


Good luck!
James
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www.bike-shack.com - Probably the best free motorcycle classifieds website in the UK...

[HD]

Yeah, not this location unfortunately
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Rusty '02 Vito Camper + CBR600F3