Shimano Brake Bleeding Mistake- Help- Mtbr.com
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  1. #1
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    Shimano Brake Bleeding Mistake- Help

    I was just trying to bleed my M525 brakes for the first time, and the pad spacer slipped out of the caliper. When worked the lever per Shimano's instructions, one piston came out and the system completly drained itself of oil. Now what? How do I refill the line and caliper?

  2. #2
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    Been there, done that. Lube the piston liberally and reinsert gently into the caliper. Then start filling the master cylinder and pumping as normal. It will take some time to get rid of the air. Be patient and follow the Shimano directions.
    Get over it!

  3. #3
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    I did that, and successfully filled the line, but fluid is still leaking out of the caliper. What should I do now?

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    Anyone?

  5. #5
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    If fluid is still leaking from the piston... Odds on, you've damaged the seal and it's time for a new piston seal.
    Sorry.

  6. #6
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    Quote Originally Posted by Stun
    If fluid is still leaking from the piston... Odds on, you've damaged the seal and it's time for a new piston seal.
    Sorry.
    Nah, s'all good. An o ring just wasn't seated properly. I've got it all taken care of now. Thanks.

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