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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through June 03, 2009 » front brake problem « Previous Next »

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Buelliganxb
Posted on Monday, April 27, 2009 - 05:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm have a problem with the front brake lever fading on my 03 XB9S. I've flushed and bleed it 5 times using the correct fluid, replaced the compression washers and cleaned everything, but my front brake lever still fades to the knuckles under hard braking. I have the lever set on the number 1 setting and new pads helped a little. What am I missing here?

(Message edited by buelliganxb on April 27, 2009)
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Fasted
Posted on Monday, April 27, 2009 - 06:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

fade implies deteriorating performance with continued use.

sounds like your system is not fading, it just plain doesn't work right from the get-go.

if you are SURE that the bleeding is complete and correctly done, the only other choice is fluid bypassing seal(s) in the master and/or caliper........

most likely, there is still air in the line

there are several discussions of similar problems in the kv that may point the way

i ended up needing an mc rebuild......
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Id073897
Posted on Tuesday, April 28, 2009 - 02:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have the lever set on the number 1 setting and new pads helped a little. What am I missing here?

If the problem worsens with pad wear, then it's caused by sticky caliper pistons/piston gaskets. This is a known issue with nissin calipers, commonly found at speed triples 955 and 1050 series, before triumph switched to brembo calipers in 2008.

The only known (temporary) help is to clean and re-grease the caliper pistons/gaskets.

http://en.wikipedia.org/wiki/Triumph_Speed_Triple# Brake_caliper
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