Rear Brake Won't Work - Yamaha FZ-09 Forum
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post #1 of 2 Old 03-07-2015, 04:39 PM Thread Starter
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Join Date: Apr 2014
Location: PA
Posts: 15
Rear Brake Won't Work

I installed my rear wheel for the first time today. I was being stupid and trying to install it with the brake caliper still on the mount. After 2 hours of back pain, I got the wheel on and the brake properly lined up with the rotor. I went to test my brakes, front brakes were amazing as usual. I pressed the rear brake, the lever goes all the way down and the brake mount twists as the piston pushes on the pads. There is barely any stopping power, but I do know that piston pushes since the mount is twisting. So how can I fix this issue? I don't think I need to bleed the brakes since the piston is pushing. I just think that the brake caliper isn't seated properly on the mount. Hence why the brake caliper twists as I push the pedal.

TLDR - Rear brakes won't do anything. Brake lever goes all the way down, but the piston is pushing since the brake caliper is twisting on the mount when the lever is pushed. How can I fix this issue?
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post #2 of 2 Old 03-24-2015, 10:49 AM
Join Date: Mar 2014
Location: Utah
Posts: 68
Have you pumped them over and over and there's still no resistance? You might need to pump them numerous time to get the fluid back in the caliper. It happens to me when I install wheels sometimes, just have to pump it over and over (10-15 times) until it feels stiff.

Since you rocked and tried to shimmy the rear wheel back into the caliper it might have forced a lot of fluid back into the rear reservoir. Check the rear brake reservoir, does it look full or half way full?

If that doesn't work then bleeding is in order.

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