brake help
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Road Captain
Joined: Dec 2008
Posts: 671
Likes: 7
brake help
Ok, i put new cables on ,trying to bleed front brake .put new bleeder valve in because it was leaking ,now every time i try to pump up brake it blows the bleeder valve cap off,am i doing something wrong or what ,thanks in advance
Road Master
Joined: Aug 2007
Posts: 1,049
Likes: 5
From: Emerald Coast, FL
The bleeder valve cap does not seal the the brake caliper fluid... it is merely a cover to block dirt and grime from getting in the bleeder valve. If it is blowing off and fluid is coming out of the valve, then the valve is not sealing properly. Is it tightened down? It is supposed to be.
Road Master
Joined: Aug 2007
Posts: 1,049
Likes: 5
From: Emerald Coast, FL
Are you using the correct size and teflon taping the threads? If so then it is likely that the threaads are cross threaded or there is a crack in the caliper. Check size... threads... cracks... and where the valve seats on the caliper.
Outstanding HDF Member
Joined: Jun 2009
Posts: 2,105
Likes: 1
From: Rowlett, Texas
I think that you might have cross threaded your caliper. i did the same thing when I was in a hurry installing a speed bleeder. Fortunately I was going to replace mine with a PM one eventually anyway. I ended up finding a good deal on one off eBay.
Road Captain
Joined: Mar 2009
Posts: 570
Likes: 2
so your trying to bleed the brakes?...with the rubber cap on?...if i remember correctly, the threads are much lower than the actual bleeding hole...lol (i said bleeding hole)...would seem like air and brake fluid would be forcing the cap off, and you should see fluid in such a case...the bleeder valve would not be correctly installed or not the right one for your ride?
Stellar HDF Member
Joined: Feb 2010
Posts: 3,386
Likes: 255
From: Southern California
Your bleeder valve is not closing. If it is working like it is supposed to, it doesn't have to be very much more than finger tight to seal. Possibilities include: Damaged threads on either the Bleeder Screw or in the Caliper, wrong Bleeder Valve, damaged Seat in the Caliper that the Bleeder Screw seals against. That's about it, other than simply not tightening the bleeder screw properly.
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