Sphere of fluid at tip of bleed screw on Shimano m785 caliper- Mtbr.com
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  1. #1
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    Sphere of fluid at tip of bleed screw on Shimano m785 caliper


    I recently bled my front brake, and tightened the bleed screw. This morning I noticed a sphere of fluid at the tip of it, even though the screw is completely tight.

    I undid the screw and checked the o ring, and that is fine. The screw hole is perfect (not stripped) and the screw threads are clean. There are no contaminants anywhere, so this is a mystery.

    I would try to tighten the bleed screw more, but I accidentally overtightened the rear caliper bleed screw hole during this most recent brake bleed session.

    Is there any explanation for this sphere of fluid at the top of the bleed screw despite it being tight?

  2. #2
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    Take a rag or paper towel and remove any residual fluid from the bleed nipple and see if it re-appears. I've seen this appear as I tighten the bleed nipple, but after clean up, no more appears.
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