Author Topic: Installed new brake fluid reservoir now brake don't work.  (Read 572 times)

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Offline Will McD

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1982 CB650. I broke my old brake reservoir during a spill so I replaced it with an identical new one. I installed it and then bled the brakes. My first time. After bleeding it the first time I put the cap back on and pumped the brake lever a few times expecting pressure to build up or something... nothing happened.

I tried bleeding the brakes with a length of hose suspended above the caliper and full of fluid. When I pull the lever in the fluid level rises (along with a few bubbles at first) and when i let it out it sucks some fluid back in.  That seemed right to me, so i did that until no more bubbles. (tapping on the lines to unstuck the stuck ones). I close the needle, put the cap back on and still no pressure :( Almost no resistance at all.

I know fluid is going from the reservoir to the lines because the level in the reservoir dropped. I know the brakes worked before I took the spill, so it shouldn't be a bad seal right? Where should I start looking? I dont want to tear apart everything and try bleeding again if I am doing something wrong to begin with. I would expect if there is a small leak it would still be possible to get some pressure by rapidly pumping the brakes, but I can't. Also, the pads are not stuck on, the wheel turns freely. (I tried the search but nothing helpful could be found) Thanks for any help! The nice weather is killing me with my bike stuck in the garage.

« Last Edit: May 02, 2011, 03:45:47 PM by Will McD »