Fubar'd rotor bolt - creativity needed!
tom_fun
Posts: 124
Hi there, I am replacing my 160mm front rotor disk for a 185mm but I have a problem. When I was removing the rotor bolts, one of them was too tight and when I was trying to unscrew it, the bolt has worn away on the inside so the allen key just turns and I cant undo the bolt
Any creative ideas out there to undo it? my best thought was to try and be a bit delicate with an angle grinder and try and wear down 2 sides of the bolt so i can get a pair of pliars on it
all help appreciated!
Any creative ideas out there to undo it? my best thought was to try and be a bit delicate with an angle grinder and try and wear down 2 sides of the bolt so i can get a pair of pliars on it
all help appreciated!
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Comments
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couple of options.
1. Knock a larger Torx into it,e.g next size up.
2. As above, then use an impact driver to get it freed up.
3. Get some plus-gas in there to help release it
4. using hack-saw cut a flat scredriver slot into it.
5. Last resort... get a drill out.Salsa Spearfish 29er
http://superdukeforum.forumatic.com/index.php0 -
Are you sure it's an allen as opposed to a torx t25?
Your idea sounds good. Try and make some purchase on the bolt head. Undo all the other and see if a twist and wiggle of the disk works.
All else fails just whip the head off with a drill then move to an angle grinder - that can get maessy.0 -
In the past, I have used a file to create flat spots on two opposing sides of the bolt head, thus enabling me to use a small spanner to undo the bolt.0
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Or use a hack-saw to cut a slot in the bolt head, then use a flat-head screwdriver to undo the bolt (you may need to use a pair of pliers on the screwdriver shaft to generate sufficient turning force).0
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If you've got another set of allen keys, try them. I've got 3 sets and they're all slightly different sizes.
Try a thick elastic band too. Place that on the head and then use the allen key as normal.0 -
Try the screwdriver first, if that doesn't work just angle grind the bolt head off & remove the rotor, grab the rest of the bolt with pliers/mole grips & turn it out.0
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thanks for the ideas folks, used a grinder as in my original idea, did the trick in 2 mins.
panic over0