Bleeding brakes - Yamaha Grizzly Forum : GrizzlyOwners.Com Yamaha Grizzly Forums
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post #1 of 5 (permalink) Old 05-11-2009, 11:31 AM Thread Starter
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Bleeding brakes

I replaced my rear pads and while I was doing it I guess I got air in the line because I have no rear brake pressure anymore. I have followed some different procedures to try to bleed the brakes from pumping it 20 times and in the last pump open the bleed screw and then tighten the screw and repeat to pumping it and opening the screw each time. Anyway none of the techniques have seemed to work and I still have no pressure. Has anyone manually bled their brakes before and how they did it.? The other option is the get a vacuum bleed kit - does anyone have experience with those?

Any feedback would be appreciated.

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post #2 of 5 (permalink) Old 05-11-2009, 12:57 PM
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i have used many different types of bleeders, but bleeding brakes on a quad is a little different than a car. try leaving the bleeder open while slowing pumping the brake pedal. keep an eye on the fluid level while you are doing this. just keep doing this until you are getting a clean solid flow of fluid. it usually works pretty good.

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post #3 of 5 (permalink) Old 05-11-2009, 01:15 PM
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When I replaced my rear pads, I bled it just like an automotive system; I'd tell Sonny-Boy to pump twice and hold. I'd crack open the bleeder, the lever'd go to the bars. I'd close the bleeder, and repeat until we got lots of clean fluid. Maybe you've got a pressure relief valve hanging open... I think that BOHTR had that happen to him last Fall...

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post #4 of 5 (permalink) Old 05-11-2009, 09:57 PM
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It sounds like your master cylinder may be toast. I was bleeding the brakes after a pad change and my master cylinder let go. I had no pressure, no resistance on the lever or pedal whatsoever. Luckily, thats not a very expensive or very hard repair to make.You can find new OEM master cylinders online for 50-60 bucks. All you have to do is undo all the lines, hook up the new MC and then bleed the lines until you have brakes again.

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post #5 of 5 (permalink) Old 05-13-2009, 08:48 AM
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(Thanks, Rick!) The more time we spend crawling around in the grease and oil on our garage floors, the more useful we can be in helping others! The guys here have helped get me through so many "projects" that I couldn't begin to thank all of them. We pay it forward instead and help others...

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