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[Cockney Boy]

Well just out of the blue yesterday my O/S Caliper decided to seize up. And the two bolts didn't want to come out and sheared off, not a problem with a little Oxycetiline. But is this a common fault?

Thank fook a replacement is only £50

[bigjeepzj]

Had 3 calliper pistons seize up.
and had to replace the pistons.

but never had a the bolts shear off.

It does seem to be a common problem with the calliper as the pistons are a type of high temp plastic 

so yes

[MOCAJ]

yep, pistons are a common one, i always keep a spare on the shelf

the bolts probably sheared off as the previous owner tightened em too much, they dont need too much Lbft

[MOCAJ]

and a rebuild kit for the caliper is about £16 plus Vat from lighthouse, as long as the cylinder isnt scored you be ok with that. Its 2 seals and a piston 

[Cockney Boy]

That was my conclusion too, there only M8 or 5/16 FFS, but you know these people who just use FT instead of Torquing them up properly....Wankers!!!!!

the bolts probably sheared off as the previous owner tightened em too much, they dont need too much Lbft

[Bishops Finger]

A birtys training session on such matters would seem  a good idea..with picture...

[MOCAJ]

http://www.birtydastards.com/frm/index.php?action=articles;sa=view;article=3

[Tragic]

Siezing calipers, ain't they fun!
Usually have at least one in the group at some point over a weekend. Sometimes they just try to throw you at the nearest scenery / oncoming traffic and sometimes they catch fire
Got a couple of repair kits here if you need one, have spare calipers too

[Cockney Boy]

Picked up a new one this afternoon, and I will re-con the old one as a spare