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  1. #1
    Junior Member NoTWHaTiTWaSNT's Avatar
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    Brake adjustment fail

    Hi Guys,
    My brake pads (Tektro Draco) were pinching slightly and so I tried adjusting them using this video as a reference.

    How to adjust disc brakes - YouTube

    Following the method used in the video did not work for me and then I made a big mistake by removing the brakes pads and pumping the brake handle which pushed one of the Pistons out and oil came leaking out.

    I pushed the Piston back in but now the break pads are pinching on the Rotor more than before - The wheel no longer turns freely - There is also no pressure when I pull the break lever.

    Can anyone tell me what I need to do / point me to a thread or video so I can remedy this problem.

    Thanks in advance
    I'm dyslexic, so if I don't get it aND!! Its really obvious, that's why

  2. #2
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    Sounds like they need a bleed, you can try the video here https://www.youtube.com/watch?v=LhKKe6av-0U if you don't have a bleed kit, would look at the cost of the kit vs just replacing with a Shimano Deore M615, they can be picked up for about £30 an end, and are some of the best brakes currently out there. With the current cost of them, it's almost cheaper to replace than service now.

  3. #3
    Junior Member NoTWHaTiTWaSNT's Avatar
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    Thanks jimc101, thought that might be the case, can you offer any advice on how to adjust the brake pads so they are not pinching the rotor? It's only one pad that is slightly pinching
    I'm dyslexic, so if I don't get it aND!! Its really obvious, that's why

  4. #4
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    Quote Originally Posted by NoTWHaTiTWaSNT View Post
    Thanks jimc101, thought that might be the case, can you offer any advice on how to adjust the brake pads so they are not pinching the rotor? It's only one pad that is slightly pinching
    Hydraulic brakes aren't adjusted as much as they're properly centered. Whether you opt for bleed/fill kit and service this brake, or decide to replace instead, it's important to learn how to mount and center them. Otherwise you'll be servicing or replacing on a regular basis.

    BTW- the first and most important lesson is to Never squeeze the lever without a rotor, or keeper in place. People who routinely travel with the wheels off, buy or improvise a spacer to trap between the pads, in case a lever is accidentally squeezed.
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  5. #5
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    If a hydraulic disk brake is causing DRAG on the disk, its usually because of dirt or corrosion. Disassemble, clean, reassemble and bleed.

    Make sure you use the correct fluid!

    -SP

  6. #6
    Junior Member NoTWHaTiTWaSNT's Avatar
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    Quote Originally Posted by speedy25 View Post
    If a hydraulic disk brake is causing DRAG on the disk, its usually because of dirt or corrosion. Disassemble, clean, reassemble and bleed.

    Make sure you use the correct fluid!

    -SP
    Not down to dirt or corrosion, pads were clean
    I'm dyslexic, so if I don't get it aND!! Its really obvious, that's why

  7. #7
    Junior Member NoTWHaTiTWaSNT's Avatar
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    Quote Originally Posted by FBinNY View Post
    Hydraulic brakes aren't adjusted as much as they're properly centered. Whether you opt for bleed/fill kit and service this brake, or decide to replace instead, it's important to learn how to mount and center them.
    Any advice on how that's done?
    I'm dyslexic, so if I don't get it aND!! Its really obvious, that's why

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    Quote Originally Posted by NoTWHaTiTWaSNT View Post
    Any advice on how that's done?
    loosen the caliper mounting bolts, squeze the brake lever so the brakes is fully on, then tighten the bolts back up with the brake lever squeezed. When the brake lever is release, this should result in the caliper being centered.

    This process only works for hydraulic brakes (your Draco are) and assumes that you don't have issues with the pistons sticking, if you do, you need to sort that first.

  9. #9
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    Quote Originally Posted by NoTWHaTiTWaSNT View Post
    Not down to dirt or corrosion, pads were clean
    Just the pads being clean is not a thorough inspection. Dirt, mud, corrosion, brake dust frequently inhibit piston operation. If your piston(s) dont move easily, some cleaning is in order. Just spraying a cleaner wont do the job properly, the caliper should be disassembled.

    -SP

  10. #10
    Junior Member NoTWHaTiTWaSNT's Avatar
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    Quote Originally Posted by jimc101 View Post
    loosen the caliper mounting bolts, squeze the brake lever so the brakes is fully on, then tighten the bolts back up with the brake lever squeezed. When the brake lever is release, this should result in the caliper being centered.

    This process only works for hydraulic brakes (your Draco are) and assumes that you don't have issues with the pistons sticking, if you do, you need to sort that first.
    Tried the method you suggested as said at the beginning of this thread, this did not remedy the problem

    https://www.youtube.com/watch?v=XAUTCZ3gIyU

    Thanks for highlighting that it might be a problem with the pistons sticking, Speedy25 also touches on this being a possible cause ....

    Quote Originally Posted by speedy25 View Post
    Just the pads being clean is not a thorough inspection. Dirt, mud, corrosion, brake dust frequently inhibit piston operation. If your piston(s) dont move easily, some cleaning is in order. Just spraying a cleaner wont do the job properly, the caliper should be disassembled.

    -SP
    ... and as the bike was nearly new when I got it the "Pistons sticking" sounds likely.

    Still undecided whether to replace with the Shimano Deore M615 as jimc101 suggested or get a bleed kit

    Thanks again for the advice guys
    I'm dyslexic, so if I don't get it aND!! Its really obvious, that's why

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