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  1. #1
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    To Bleed of Not to Bleed.. HFX-9s ?????

    I've had a set of HFX-9 for several years and have never bleed them, only changed pads and rotors (6" to 7" with good results).

    How do you know the brakes NEED a bleed? The current pads need replacement, but the level seems to be fine... not too spongy.

    Just curious if there is a "required" bleed frequency or fluid life to be worried about.

    Also, I wonder what the ideal pad compound is for Colorado conditions....

  2. #2
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    i would bleed them to refresh the fluid. the bleed is easy. pop the syringe on the bleed nipple and stick the adapter and tube in the lever. push the syringe and done

  3. #3
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    Going to bleed my HFX-9's this weekend. I hear it's a nightmare. We'll see.

  4. #4
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    Experience?

    Would like to hear about your experience.... I've never bleed mine and also hear horror stories...

  5. #5
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    The first couple times I did it, I couldn't get it right. Doing it the way they explain works perfectly well, but it takes awhile to be sure you got all the air out. I think my problem the first couple time was a loose hose at the master cylinder, but can't be sure because of the timing between bleeds and finding the loose hose.

    BTW, I didn't need to bleed the brakes for 5 years, they worked great the whole time. Only reason I had to do it, my buddy hit the lever while the wheel was off and popped out a piston.

  6. #6
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    Quote Originally Posted by yogidave
    Would like to hear about your experience.... I've never bleed mine and also hear horror stories...
    Haven't gotten around to bleeding my front hfx-9. I did bleed my rear brake though, which is a hayes mag. Same caliper as the hfx-9, but different master cylinder.
    It wasn't too bad. I will say though that if you have the hayes pro bleed kit make sure you wrap plumbers tape around the fill bottle opening threads. The instructions didn't say anything about that... Thanks Hayes!

    Or just use a syringe like someone else said.

  7. #7
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    No troubles here!

    I made my own kit consisting of:

    1. 60cc syringe (<<$10 for 2 shipped, ebay)
    2. tubing from hardware store (<$2)
    3. Hayes OEM master cylinder bleed fitting ($5 on ebay) --> Critical component
    4. Dot3/4 brake fluid form the autoparts store. ($3)
    5. Old isoprolpyl alcohol bottle as fluid catch (free)
    6. coat hanger for hanging catch bottle (free)
    7. IPA for cleaning ($1 at walgreens)

    Took about 10 minutes per wheel. Rode around the backyard a bunch and brakes feel great.

    Why did I wait so long?????

  8. #8
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    Quote Originally Posted by yogidave
    I made my own kit consisting of:

    1. 60cc syringe (<<$10 for 2 shipped, ebay)
    2. tubing from hardware store (<$2)
    3. Hayes OEM master cylinder bleed fitting ($5 on ebay) --> Critical component
    4. Dot3/4 brake fluid form the autoparts store. ($3)
    5. Old isoprolpyl alcohol bottle as fluid catch (free)
    6. coat hanger for hanging catch bottle (free)
    7. IPA for cleaning ($1 at walgreens)

    Took about 10 minutes per wheel. Rode around the backyard a bunch and brakes feel great.

    Why did I wait so long?????

    Fear and loathing

  9. #9
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    Yup

    Quote Originally Posted by jeffscott
    Fear and loathing
    What he said

  10. #10
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    Bleed worked great.

    First trail ride with 1500+ foot rocky descent and no issues.

    Much improved lever feel and modulation.

    Now, new pads next week!!!

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