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RSV R rear brake

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peach17 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote peach17 Quote  Post ReplyReply Direct Link To This Post Topic: RSV R rear brake
    Posted: 08 Feb 2019 at 00:33
twice now I 've had the rear brake lock on. First time it released itself by getting so hot it melted the calipers pot seals. So new pads and new seals. Really struggled to bleed but got somewhere close. First run out and it sticks on again after first try??? This time I have to crack the nipple on caliper to release pressure . Faulty master cylinder maybe? 
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mixdrive1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mixdrive1 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2019 at 05:18
Is the master cylinder maybe adjusted incorrectly? Matbe needs backing off abit
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2019 at 06:13
And check you don't have too much fluid in the reservoir, it needs an air gap.
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legend88 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote legend88 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2019 at 08:30
Both the above the most likely suspects. And the obvious of course that the pistons slide freely in the caliper. Given that you have just rebuilt it I guess this won't be an issue but worth mentioning for completeness.

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wigginsjp View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wigginsjp Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2019 at 09:44
Originally posted by legend88 legend88 wrote:

Both the above the most likely suspects. And the obvious of course that the pistons slide freely in the caliper. Given that you have just rebuilt it I guess this won't be an issue but worth mentioning for completeness.


As with all three of these mentioned. 

I wouldn't rule out some form of distortion to the caliper pistons or the caliper itself if it got that hot it melted the seals. May only be minor but enough potentially to cause the issue 
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