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  1. #1
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    What's wrong with my XT hydros?

    Brand-new, installed and bled by me. (Which may be the problem.)
    My front brake, at the start of a ride, you can pull the lever all the way to the bar.
    Pump it 20 times and it starts working.
    I store my bike hung up by the front wheel if that helps.
    "What is this? A center for ants?"

  2. #2
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    That sounds like air in the system. Rebleed them.
    Duct tape iz like teh Force. It has a Lite side and a Dark side and it holdz the Universe together.

  3. #3
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    ^^^This

  4. #4
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    Thanks. I'll just bring it to the shop because I suck at doing brake bleeds.
    "What is this? A center for ants?"

  5. #5
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    What method were you using, the Shimano approved or the syringe?

  6. #6
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    Quote Originally Posted by mitzikatzi View Post
    That sounds like air in the system. Rebleed them.
    Guys, how much does the shop usually charge to bleed both brakes?

  7. #7
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    Had Avids done years ago and was charged $30 for one. Depends on the shop.

  8. #8
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    Quote Originally Posted by Wishful Tomcat View Post
    What method were you using, the Shimano approved or the syringe?
    Didn't know there was a Shimano method.
    I'm using the syringe method. Screw the syringe into the reservoir, undo the nut at the nipple on the caliper, and inject the fluid until theres a continuous flow. Close the nipple-nut.
    "What is this? A center for ants?"

  9. #9
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    Just wondering, the Shimano way is a gravity bleed towards the caliper.

  10. #10
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    This is the Shimano method (PDF):

    http://www.shimano.com/media/techdoc...9830648123.PDF


    These are the instructions from Park Tool on how to bleed Shimano brakes:

    Park Tool Co. » ParkTool Blog » Shimano® Hydraulic Brake Service and Adjustment

    I haven't attempted either method yet. I'm putting it off until winter. I would like to know which one works best.
    Justin
    Salt Lake City
    2012 Specialized Stumpjumper FSR Comp 29
    2006 Specialized Allez Expert Double

  11. #11
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    Super easy using syringes, even with screw-ups, takes about 15 minutes.

  12. #12
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    My xt brakes are new style 2012. DO NOT use these methods with new style shimano brakes. You are not supposed to remove the reservoir cap on the new style brakes, or you ruin the diaphragm. You only remove the one screw and screw in the syringe there. I learned this the hard way. I ruined my left hand lever by using this exact pdf off of the internet.
    Quote Originally Posted by authalic View Post
    This is the Shimano method (PDF):

    http://www.shimano.com/media/techdoc...9830648123.PDF


    These are the instructions from Park Tool on how to bleed Shimano brakes:

    Park Tool Co. » ParkTool Blog » Shimano® Hydraulic Brake Service and Adjustment

    I haven't attempted either method yet. I'm putting it off until winter. I would like to know which one works best.
    "What is this? A center for ants?"

  13. #13
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    so how do you bleed the 2012 xt's then?

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    The way I bleed them is take off the bleed screw cap on top of the lever, screw the yellow shimano funnel in, connect a hose and syringe at the caliper, open the bleed screw at the caliper and push the fluid from the caliper until the funnel fills up with old fluid, flick the lines to get air out, plug the funnel and take out of bleed hole, close the caliper screw, put the plug back in the lever and screw tight, Done.

    This seems to be the best method I have found so far, I tried bleeding them from the lever down to the caliper but I could not get a good feel out of them, bleed ing from the caliper and pushing the fluid up through the lines seems to get the air out a lot better.

    Edit: If you do not have the Shimano funnel, my lbs owner gave me one for free one visit, I believe you can just use a largish syringe with no plunger it it so it acts like a funnel to hold the brake fluid.

  15. #15
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    Get the funnel. The newer SLX/XT/XTRs are so easy and you'll save a boatload of money in just one bleed. Don't forget the yellow bleed block.

  16. #16
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    Quote Originally Posted by subsist View Post
    The way I bleed them is take off the bleed screw cap on top of the lever, screw the yellow shimano funnel in, connect a hose and syringe at the caliper, open the bleed screw at the caliper and push the fluid from the caliper until the funnel fills up with old fluid, flick the lines to get air out, plug the funnel and take out of bleed hole, close the caliper screw, put the plug back in the lever and screw tight, Done.

    This seems to be the best method I have found so far, I tried bleeding them from the lever down to the caliper but I could not get a good feel out of them, bleed ing from the caliper and pushing the fluid up through the lines seems to get the air out a lot better.

    Edit: If you do not have the Shimano funnel, my lbs owner gave me one for free one visit, I believe you can just use a largish syringe with no plunger it it so it acts like a funnel to hold the brake fluid.
    I was doing your same method, but in reverse. Next time, I'll try from the caliper and up.
    "What is this? A center for ants?"

  17. #17
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    Quote Originally Posted by subsist View Post
    The way I bleed them is take off the bleed screw cap on top of the lever, screw the yellow shimano funnel in, connect a hose and syringe at the caliper, open the bleed screw at the caliper and push the fluid from the caliper until the funnel fills up with old fluid, flick the lines to get air out, plug the funnel and take out of bleed hole, close the caliper screw, put the plug back in the lever and screw tight, Done.

    This seems to be the best method I have found so far, I tried bleeding them from the lever down to the caliper but I could not get a good feel out of them, bleed ing from the caliper and pushing the fluid up through the lines seems to get the air out a lot better.

    Edit: If you do not have the Shimano funnel, my lbs owner gave me one for free one visit, I believe you can just use a largish syringe with no plunger it it so it acts like a funnel to hold the brake fluid.
    I finally got around to trying this method. Injecting the oil from the caliper was a huge success. Thanks.
    "What is this? A center for ants?"

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