leaking bleeder valve - Page 2
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  1. #21
    Raised by Wolves
    Join Date
    Jun 2016
    Location
    Cornwall, England
    Posts
    570

    Default Re: leaking bleeder valve

    Quote Originally Posted by raven View Post
    OK, here is a up date. Ordered new bleed screws, normal Harley 2 to 3 weeks or longer.
    So I thought with nothing to lose I would play around a bit.
    Just happened to have a small round file, close to the size of the seat. Very carefully worked it around the seats on both calipers.
    Put a couple of turns of Teflon tape around the threads of the screws.
    Filled and bled the brakes, tightened to 50in/lb's.
    Go out and give the brakes a good squeeze every now and again.
    Three days later, NO WEEPING
    Well done, just keep an eye on it when you're riding
    ZZR1400, XR1200, DR650 x 2
    In bits ;-) DR650, ZXR750

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  3. #22
    the older I get.the faster I was
    Join Date
    Oct 2013
    Location
    Woodstock Ont. Canada
    Posts
    1,075

    Default Re: leaking bleeder valve

    Quote Originally Posted by Houseyhousey View Post
    Well done, just keep an eye on it when you're riding
    I think I will be checking them every time I stop.
    Won't be riding for a while yet, have to find time to change the clutch cable.
    Keeping my fingers crossed. No problems, self inflicted or otherwise. lol

  4. #23
    Raised by Wolves
    Join Date
    Feb 2011
    Posts
    861

    Default Re: leaking bleeder valve

    How did you bleed the calipers? I've found that using a piece of plastic tubing and using lever pressure allows some brake fluid to remain in the bleeder. And that little bit of oil is enough to make the threads "weep" for a long time (on the side that doesn't have the rubber O ring).

    I went through the whole "seated, a little tighter, and a little more, check surfaces, new bleeders, tighten, tighten more,..." thing myself some time ago when I used an "automatic brake bleeder" (basically a plastic tube with a one way valve in it) and used lever pressure to bleed. Whatever I tried, the threads on that non O ring bleeder kept weeping. And when I was ready to give up, I used my SBS brake bleeder system and all was fine.

    Now the side that has the O ring doesn't weep just because of that O ring. It seals the threads. And that's also why most bleeder screws have some sort of sealing agent pre-applied.
    Just think about it, if the mating surfaces didn't seal, you would loose quite a bit of brake fluid through the bleeder hole on top of that screw and loose pressure at the lever.

  5. #24
    the older I get.the faster I was
    Join Date
    Oct 2013
    Location
    Woodstock Ont. Canada
    Posts
    1,075

    Default Re: leaking bleeder valve

    Kevin, that's what was bothering me. Couldn't figure out why it was weeping around the threads and no fluid coming out of the hole on top.
    I was using one of those fancy one way valves, didn't think it was working all that great. Went back to the old fashioned way,open bleeder , squeeze,close bleeder, release lever,ect. ect.
    Got the new bleeders, no coating on them. For now they will stay in the toolbox.
    Glad to see I am not the only one to have this problem.
    Thanks to everyone who helped.

 

 
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