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Post by achrista on Oct 12, 2021 14:22:14 GMT -7
I took my rear wheel off without using my pitbull tire wedge and had a nightmare getting it back on. I noticed my brake piston had depressed on reattachment and I wedged it open using 2 trim pieces. After bolting everything back up the rear brake would not compress. There's no resistance in the pedal and it goes all the way down. I didnt open the system, but is it possible that I could have somehow introduced air? If not I'm guessing I'll need to rebuild the master cylinder. Going to try bleeding before anything else but anyone ever had similar issues?
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terrys
Full Member
Posts: 104
Likes: 80
Registered: Mar 1, 2021 0:48:28 GMT -7
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Post by terrys on Oct 12, 2021 18:03:57 GMT -7
Have you pumped the brake lever a few times to move the pistons back against the disc?
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Post by achrista on Oct 12, 2021 18:08:28 GMT -7
Have you pumped the brake lever a few times to move the pistons back against the disc? I did. I was actually able to use my fingers to pull the pad away from the disk just now and the pedal did move the piston back, but that makes me worry about a bad seal. Or something else. |
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Post by RedAndBlack on Oct 13, 2021 1:28:22 GMT -7
Seems like one of the Pistons could've come close to falling out, maybe briefly displaced the seal and a little bit of air got into the system. Did you find any brake fluid anywhere?
I would try to bleed it.
I hate rear tire changes.that pitbull tire wedge definitely was a game changer though.
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Post by hooli on Oct 13, 2021 10:21:58 GMT -7
The rear caliper that Yamaha uses on many of their bikes (FZ/MT range as well as the R6/R1's) is s a simple single action design. There is only one caliper to worry about.
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