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Sora disc brake adjustment issue

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Old 05-13-22, 02:17 PM
  #1  
dabac
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Sora disc brake adjustment issue

Hi all,
A friend rolled by asking for help adjusting his Sora (mechanical) disc brakes. And to my embarrassment, I couldn’t get them decent.
The pads looked to have an OK amount of friction material left, but it was still as if they sank too deep into the caliper.
If I set the caliper to where the caliper body just cleared the rotor, it would take nearly the full travel of the brake before the pads contacted the rotor.

Are there different models pads that thicker/thinner?
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Old 05-13-22, 03:40 PM
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Iride01 
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BR-R317's? Probably written on the backside of the brake body.

https://si.shimano.com/api/publish/s...009-02-ENG.pdf

https://si.shimano.com/api/publish/s...001-26-ENG.pdf

https://si.shimano.com/#/en/search/Keyword?name=br-r317

If you can't get it adjusted, then either you are just missing something or the rotor is too worn or the wrong one. But I have a hard time imagining one too worn or too thin so probably that's unlikely.

Last edited by Iride01; 05-13-22 at 03:46 PM.
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Old 05-14-22, 12:08 AM
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Originally Posted by Iride01
BR-R317's? Probably written on the backside of the brake body.

https://si.shimano.com/api/publish/s...009-02-ENG.pdf

https://si.shimano.com/api/publish/s...001-26-ENG.pdf

https://si.shimano.com/#/en/search/Keyword?name=br-r317

If you can't get it adjusted, then either you are just missing something or the rotor is too worn or the wrong one. But I have a hard time imagining one too worn or too thin so probably that's unlikely.
Thanks. The tech docs pointed out a new-to-me position for an adjustment screw for the moving pad. That’s probably it.
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