Seized aero brake

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Joined: Sat May 26, 2007 13:27 pm

Seized aero brake

Postby BigSpecs » Fri Mar 08, 2013 10:59 am

I went to get my TT bike out for the first time this year last night and found the rear brake to be totally seized up. It is a concealed brake sitting under the chainstays.

It is the Tektro R725R

Details here: ... rt=2&fid=4

I have obviously not lubed/ oiled it when I put it away at the end of last year. Due to the position of it on the bike it picks up a lot of road spray.

My question is, when I try to free it up tonight. Am I looking to undo the two allen bolts and get some grease in there? or is there something else I should be doing?


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Joined: Sat Jul 07, 2007 07:33 am

Re: Seized aero brake

Postby andyrr » Fri Mar 08, 2013 11:28 am

I'd initially get it off the bike then see if dousing it liberally in WD-40 or similar and then manually pushing the caliper arms shut and open helps. Failing that then I'd try to get the arms separated from the caliper but be careful doing this to not lose any little springs etc
It does look like those 2 large allen-had bolts will hold the arms on so you could try initially just loosening these and getting busy with the lube. Might just be grunge betweem the moving surfaces.

Posts: 1001
Joined: Thu Feb 05, 2004 10:35 am

Re: Seized aero brake

Postby estampida » Fri Mar 08, 2013 11:39 am

take it off the frame

clean it with hot soapy water first (what ever has stuck might be water soluble)

then if no joy, get the wd40 out see if it frees up (let it soak in overnight)

if not then strip down (check youtube for any related tutorials)

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