Siezed bolts holding brake calipers

chrisarb · Apr 26, 2011

trying to remove rear brake calipers on my discovery 1

bolts heads rounded. access dificult have bought set of stud bolt removers ( socket type ) but 12mm limit. should I continue to round off heads until I can fit extractor. this is or has become a DRAMA HELP A NOVICE.

jamesmartin · Apr 26, 2011

usually if you hit the head of bolt enough times bolt will relax and undo

chrisarb · Apr 26, 2011

ok one off with a good amount of heat. the one with harder access to do trying to file down to take 12mm stud bolt exractor. will gladly smack it with a hammer as taken 5hours today so far. back at tomorrow bright and early. thanks for reply. chrisarb

Big Stu 12 · Apr 26, 2011

You could always try some of these they bite harder onto the rounded off nut the more you trun them ,

Damaged Bolt Remover socket drive Set 10pce 9-20mm on eBay (end time 15-May-11 09:08:56 BST)

martinhollings · Apr 26, 2011

jamesmartin said:
usually if you hit the head of bolt enough times bolt will relax and undo

agree ^^^^^^ if you are removing bolts that look like they are going to be a problem this is a good idea and if the heads do round off then hammering a smaller sockett on will also helps free the bolt off as well as giving new grip

300tdistu · Apr 26, 2011

heat and lots of it then tap a 11mm old socket on should come out

Boris113 · Apr 27, 2011

My mate had this problem, we ended up welding an m12 bolt to the calliper bolt, let it cool then stuck a breaker bar and socket on it...worked fine

alex8882 · Apr 27, 2011

i used an cordless impact on mine last week just for one of the bolts thou. However a 16 sided socket should grip, well did with mine i used 1/2 inch

GRATCH · Apr 27, 2011

alex8882 said:
i used an cordless impact on mine last week just for one of the bolts thou. However a 16 sided socket should grip, well did with mine i used 1/2 inch

I think someone means 12 sided (or bi-hex):doh:

shaggyo · Apr 27, 2011

get a set of irwin bolt grip sockets spent half an hour with no joy borrowed a set of these bolt out in less than a minute bought a set used them when replacing front shocks and ant roll bars a great investmant at about 30 quid

chrisarb · Apr 28, 2011

thanks folks its off heat angle grinder stud bolt extractor all used now need hub bearing out help anyone

Siezed bolts holding brake calipers

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