corroded bolt on rear brake

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colly

Re member eR
Location
Leeds
The bolt holding on the rear caliper has corroded and the allen key has rounded out the inside of the bolt.
Any ideas on how I can get it apart? There isn't room to drill it.
 

tyred

Legendary Member
Location
Ireland
Tricky because of it's location.

Give it a good soaking with penetrating oil twice a day for a few days and the try to fit the next size up allen key or drive a suitably sized torx head into it.

If you're careful, you may be able to file the head off it and when you remove the caliper, it should be possible to screw what is left of the nut in a vice and a bike shop should be able to give you a replacement nut.

Alternatively, cut through it from the other (caliper) side with a hacksaw. Obviously this will bugger up the caliper mounting bolt so the caliper is probably toast unless you can get spare parts.
 

battered

Guru
I'm in Leeds (near Woodrups), if you can't get it off PM me and I'll have a look. I've had any number of these to fix when playing with old cars, and I'm sure this one would yield to persuasion.
 
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