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Hydraulic disc brake experience
The GLW has Shimano hydraulic disc brakes on her urban commuter/touring
bike. Recently the front brake system degraded to the point that the lever could easily be pulled all the way to the bars. Not good. I bought a bleed kit and Shimano brake oil for $50. I bled both front and back brakes as instructed by Shimano. The front brakes worked again as new. The front brake started making horrid squealing noises. I'm not certain if this started before or only after I bled the brakes. However, I noticed the hose from the front brake caliper was damp with oil near the lever. I suspect the hose connection to the lever has leaked. Perhaps this is why the system needed bleeding in the first place. I tried tightening the nut (that compresses an olive on to the hose just inside the lever body). I'm not certain I have stopped the leak though. I suspect the oil moved down the outside of the hose and on to the disc and pads, and that is what caused the horrid noise. My cable actuated disc brakes on my gravel/touring bike are working fine though. -- JS |
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