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  1. #1
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    Where can I get Shimano spare parts?

    I'm running a set of 2012 Shimano XT BR-M785 disc brakes. There's a leak coming from under the top covers on both the master cylinders. I removed the covers and apparently over-torqued and ruined the rubber diaphragm. Is there a way to McGyver this, and if I wanted to replace the diaphragm, where to get? My LBS is having trouble getting the part.
    Thanks
    "We will call you Cygnus, the god of balance you shall be."

  2. #2
    rebmem rbtm
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    If you need Item #4 on the BL-M785 Exploded Diagram put the Shimano Part Code into the search bar on the top right side of this link.

  3. #3
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    By looking at the exploded diagram, the part I need is still inside the reservoir. You can see it, but it's not detailed.
    "We will call you Cygnus, the god of balance you shall be."

  4. #4
    rebmem rbtm
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    Don't know how you'll find this part if it isn't listed as replaceable and doesn't have a part code.

  5. #5
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    Thinking about making a seal with some other material. I could leave the original diaphragm and add a strip of ? all around, and under the cover.
    "We will call you Cygnus, the god of balance you shall be."

  6. #6
    rebmem rbtm
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    Can you take a photo of the damaged parts to show where the leaks are coming from.

  7. #7
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    The diaphragm is very much a replaceable spare part. The problem may not be on your LBS's end, but on Shimano's. Sometimes the supply lines are slow...maybe try calling up another shop and seeing if they can get the part.

    I would not try to cobble anything together, your brake system is far to important to not have 100% faith in.

  8. #8
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    I ended up putting a bead of "liquid gasket". It worked wonders.
    "We will call you Cygnus, the god of balance you shall be."

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