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Thread: Break Line Replacement

  1. #1
    Hockeystud87's Avatar
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    Default Break Line Replacement

    I went to fly my old model 4 today and found a crack in my brake-line in the cockpit. Brake fluid shooting all over.

    So now I need to replace all the lines. I have Matco master and slave cylinders. Anyone have a good source for brake lines? I have Grove gear. Also not sure how to get the fittings back on the lines.

  2. #2
    Senior Member efwd's Avatar
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    Default Re: Break Line Replacement

    You can always get the tubing and fittings from Kitfox Aircraft. Being that you are replacing the lines, each bit of hose is slipped through a nut then a compression sleeve. stick the hose end into the fitting, tighten the nut down and it compresses the collar down tight around the hose. The factory is now using Loctite 567 to seal the fittings to the gear. You should be able to leave the fittings attached to the gear though. Just get the nut and collars to put on the new tubing and attach to the existing fitting. Torque will seal the compression collar down.
    Eddie Forward
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    SS7, 912iS, Garmin G3X

  3. #3
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    Default Re: Break Line Replacement

    Aircraft spruce has it as well. JImChuk
    https://www.aircraftspruce.com/catal...clickkey=45746

  4. #4
    Hockeystud87's Avatar
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    Default Re: Break Line Replacement

    Sweet I got the those brake lines from Spruce and have them on their way.

    Question do I need to buy any other fittings or internal compression collar (are they reusable)? I don't think those are damaged at all. Just the tubing got cracked.

  5. #5
    Senior Member efwd's Avatar
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    Default Re: Break Line Replacement

    Fittings are all fine to use again. you will need new collars as once they are compressed you won't be able to reinstall them on the new hose even if you got them off the old.
    Eddie Forward
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    SS7, 912iS, Garmin G3X

  6. #6
    Hockeystud87's Avatar
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    Default Re: Break Line Replacement

    Hmm I am trying to look up collars and can't seem to find any on line. Is there a source or a direction you could point me?

  7. #7
    Senior Member Rodney's Avatar
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    Default Re: Break Line Replacement

    Amazon has them.

    https://www.amazon.com/Legines-Brass-Compression-Fitting-Sleeve/dp/B0761P2V6G/ref=sr_1_12_sspa?ie=UTF8&qid=1540329521&sr=8-12-spons&keywords=3%2F16+compression+fitting&psc=1[/url]

    Copy n paste this address, or just search for 3/16 compression fitting sleeve.

    FYI - I also found 10 foot sections of 3/16 nylon brake lines on Amazon too.

    Hope this helps.

    Regards
    Rodney

  8. #8
    Hockeystud87's Avatar
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    Default Re: Break Line Replacement

    I just called matco and it seems since I have the 1/8 lines there isn't a need for those collars.

  9. #9
    Senior Member efwd's Avatar
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    Default Re: Break Line Replacement

    Of course, that's why they make 1/8 compression collars.
    Eddie Forward
    Flying
    SS7, 912iS, Garmin G3X

  10. #10
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    Default Re: Break Line Replacement

    You can also go to your auto parts store and get the right size brass nuts and ferrells in their brake fittings department. Bring a small piece of brake line with you to match up to. JImChuk

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