Bleed valve "sweating"

Started by Betlog, December 01, 2012, 09:42:42 AM

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Betlog

I'm noticing that my bleed valve (clutch and front brake) on my '07 S2R800 "sweat" / leak a bit.  Note that I have torqued the valves properly.  Is my brake and clutch fluid compromised necessitating a re-bleed, or is the fluid still ok?

ducpainter

Are you sure they're leaking and it's not just leftover fluid from your last bleed?
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Betlog

Quote from: ducpainter on December 01, 2012, 02:46:26 PM
Are you sure they're leaking and it's not just leftover fluid from your last bleed?

its possible but I cleaned the area several times already. Definitely becomes less and less. If there is a leak though, is it ok to keep the old fluid as long as the fluid level is fine?

Howie

I wouldn't be so concerned about fluid condition, but I would be about the "sweating".  I would clean the area well with brake cleaner or alcohol.  If moisture reappears I would remove the bleeders and inspect the surfaces.

Betlog

Quote from: howie on December 01, 2012, 08:59:41 PM
I wouldn't be so concerned about fluid condition, but I would be about the "sweating".  I would clean the area well with brake cleaner or alcohol.  If moisture reappears I would remove the bleeders and inspect the surfaces.

will do.  Thanks. In addition, I'll re-torque them. The manual does not specifically state the front bleed valve but it does the rear (within the "front brake" section), and from what it looks like, on my bike the front and rear are the same size: "rear brake bleed valve - M6x1 12Nm +/-10%".