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Buell Forum » XBoard » Archive through May 07, 2012 » Problem with new pads and rotors « Previous Next »

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Fasemask
Posted on Monday, April 16, 2012 - 08:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey all. Just got new pads and rotors. After installing the front ones the brake is rubbing quite a bit. struggling to find the cause. Could the brake need to be bleed/blead
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Fasemask
Posted on Monday, April 16, 2012 - 08:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Also one of the pads appears slightly thicker than the other.
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Skully
Posted on Monday, April 16, 2012 - 11:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What brand/model are the pads and rotors?
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Fasemask
Posted on Tuesday, April 17, 2012 - 08:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pads are carbone lorrain and the rotors are braking.
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Jeffroj
Posted on Tuesday, April 17, 2012 - 10:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You are most likely getting stiction in your pistons, which usually happens with new pads. Because the pistons have been more exposed in their travel, and now your seals are trying to seal against that dirty surface of the pistons that were previously exposed. Clean them real good, and work them in and out to hopefully free them up.
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Jeffroj
Posted on Tuesday, April 17, 2012 - 10:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Also, have you bed the new pads to the rotor?
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Fasemask
Posted on Tuesday, April 17, 2012 - 03:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bike has not been ridden yet just moves around the garage. The pistons go in quite easily pushed them in with my thumbs. Cracked the front bleeder open and some fluid and air came out. Im thinking this could be the problem. Has anyone done a gravity type bleed on these brakes and if so how did it work?
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1313
Posted on Tuesday, April 17, 2012 - 08:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Has anyone done a gravity type bleed on these brakes and if so how did it work?

When I put the ZTL2 front brake on my Uly-XT, just as I poured brake fluid in the master cylinder, my friends said "It's lunchtime!". So off we went to get some grub after I cracked open the bleeder screw. After lunch we came back and found the front brake pretty well bled. I still did a few cycles of normal, manual bleeding afterwards, but I was pretty darn impressed how well they took to a gravity bleed.

One data point,
1313
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