Re: Bleeding Disc's

On 3/20/2025 4:44 PM, Mark J cleary wrote:

On 3/20/2025 2:46 PM, cyclintom wrote:

I can't say what's going on. The fact that you had to bleed the rear brakes backwards but I cured the front brakes which you would think wouldn't be a problem since it is all vertical hoses was amazing. Bleeding that brake from top to bottom releases a lot of air bubbles after which the disk levers were hard and with about a half way pull to lock.
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The levers with the bleeding cap off appeared top be full of liquid so the levers were full and it couldn't be air trapped somewhere in the levers.
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but installing a funnel and filling it half way and using the syring on the bottom pulled a great deal of air out of the system.
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So while the Shimano instructions and most of the videos showed bottom to top, bleeding trom top to bottom as one video, made by a woman mechanic seems to be the only way to get the brake properly bled.

 I have done it both ways and all seem to work about the same. However getting in a hurry and not letting things settle is a problem. This youtube video I watched is great and this works great.
 https://www.youtube.com/watch?v=brLF56banjs

SO much more finicky than dealing with cable actuated rim brakes!
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- Frank Krygowski