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Thread: Brake bleeding

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  1. #1
    Senior Member ken nougaret's Avatar
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    Default Brake bleeding

    I pushed 5606 up both brakes 3 times each side alternating sides. I'm still left with this 2" section of air. I used the oil can and the syringe with the same results. Thoughts?
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  2. #2
    Senior Member HighWing's Avatar
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    Default Re: Brake bleeding

    Ken,
    I'm not sure what I am looking at. My lines go up through the bottom fabric then across the floorboard near the cowl side then on the floorboard around the corner then up to the brake. In bleeding all is uphill from the caliper - especially with tailwheel. I don't understand the line to the top of the tube then back down.
    Lowell Fitt
    Goodyear, AZ


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  3. #3
    Senior Member Dave S's Avatar
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    Default Re: Brake bleeding

    Ken,

    Wondering if the orientation (line entering from the top of the fitting rather than the side or bottom) of the blue "T" could be the cause of the issue? If there is a large enough void inside the "T" could it possibly be holding a air bubble while allowing the more dense fluid to slip past into the reservoir? Just a thought.

    Before making a lot of work of it, I'd go back to the brake wheel cylinder this line is connected to and give it another go. I found it useful to hook up a spillover line to the top of the reservoir and then not worry about excess fluid spillover. Possibly a little more forceful application of the oil can or syringe may blow the bubble into the reservoir out of the line? Another experiment may be to have two people applying a syringe to both sides at the same time.
    Dave S
    Kitfox 7 Trigear (Flying since 2009)
    912ULS Warp Drive

    St Paul, MN

  4. #4
    Senior Member ken nougaret's Avatar
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    Default Re: Brake bleeding

    Lowell, your question prompted me back to the manual to take a picture for you. And Dave I suspected the same as you. After looking at the pic again, I see that I have the tee upside down. How did I do that? Thanks for the quick reply. I will flip the tee over and try again.
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  5. #5
    Senior Member ken nougaret's Avatar
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    Default Re: Brake bleeding

    Success! And I feel stupid. Thanks again, Ken

  6. #6
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    Default Re: Brake bleeding

    Ken,

    I wouldn't feel stupid (but I know what you mean). You pointed out a few good things for everyone.

    1. The value of asking questions as opposed to willy nilly going at it and getting frustrated with it and wasting time trying to figure it out or worse, leaving it and moving along.

    2. The value of experience here and on a few other forums.

    3. The value of at least one extra sets of eyes.

    4. The value of "a picture is worth a thousand words".

    Stupid would have been to not ask or doing it wrong twice!

    Show me someone who hasn't made a mistake and I'll show you a liar!

    Sounds like your getting closer, can't wait to see her done!

    Greg

  7. #7

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    Default Re: Brake bleeding

    What difference does air near the reservoir make? as long as it doesn't make it to the master cylinder.
    The important part of bleeding the brakes is (if I understand correctly) that no air is in the lines between the wheel pistons and the master brake cylinders. This makes ''mushy'' brakes.

    Ofer Gd

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