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  1. #1
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    Avid Juicy 3 - rotor drags on inboard side...

    I have a set of Avid Juicy 3's, and just with the front brake, the rotor started dragging on the inboard side. I tried resetting the pistons, but everytime I do that then reset the caliper alignment, the same thing happens - no space between the pad and the rotor on the inboard side. I pulled the pads and gently pumped the lever to check for free piston movement, and it looks normal. So before I take this to the LBS to get looked at:

    Could air that somehow got in the line cause this?

    Any other suggestions to try and correct it myself?

    Thanks in advance!!

  2. #2
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    Crap. Just looked at the lever again and noticed a drop of brake fluid dripping out of the reservoir area....

  3. #3
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    You need to remove the pads. Gently squeeze the brake lever a little to expose some of the piston not too much you don't want to pop the piston out. Clean the piston. I used a q tip to smear rubber grease on the piston. Use 10mm ring spanner to push pistons back in. Reinstall pads.

    This is covered in a Avid pdf document on there web site. here page 20
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  4. #4
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    Quote Originally Posted by AK47
    Crap. Just looked at the lever again and noticed a drop of brake fluid dripping out of the reservoir area....
    Thats no good
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  5. #5
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    Quote Originally Posted by mitzikatzi
    You need to remove the pads. Gently squeeze the brake lever a little to expose some of the piston not too much you don't want to pop the piston out. Clean the piston. I used a q tip to smear rubber grease on the piston. Use 10mm ring spanner to push pistons back in. Reinstall pads.

    This is covered in a Avid pdf document on there web site. here page 20
    Thanks for this. During bleeding, I find out that I have a stuck piston in each of my calipers. Any idea where to get the new o-rings that they list? It says I need new o-rings for the banjo bolt and some square edge o-rings. I have Juicy 5's.
    Last edited by Ferdball; 03-26-2011 at 03:49 PM.
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  6. #6
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    QUOTE=mitzikatzi]You need to remove the pads. Gently squeeze the brake lever a little to expose some of the piston not too much you don't want to pop the piston out. Clean the piston. I used a q tip to smear rubber grease on the piston. Use 10mm ring spanner to push pistons back in. Reinstall pads.

    This is covered in a Avid pdf document on there web site. here page 20[/QUOTE]

    Thanks as well. I found a brand new front system for $55 shipped on Ebay so I went that route. Where does one find rubber grease anyway? Auto parts store?

  7. #7
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    Rubber Grease, Yes from an Auto store.

    You can get some super deals on Juicys which makes it cheaper to buy a new set than to service old ones and you get new pads and a rotor as a bonus.
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  8. #8
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    http://www.amazon.com/gp/product/B001CK0D18

    Found a caliper rebuild kit on amazon for $38. I couldn't find a new brake system for $55, so this seemed like a good deal. I have Juicy 5's.
    Last edited by Ferdball; 03-26-2011 at 03:49 PM.
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  9. #9
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    this is the kit that says it's for a Juicy 3...

    http://www.amazon.com/Avid-Caliper-r...ef=pd_sbs_sg_1
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  10. #10
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    What about...

    Quote Originally Posted by mitzikatzi
    Rubber Grease, Yes from an Auto store.
    Thanks. Is it bad for the seals to use a drop or so of DOT 4 brake fluid on the pistons for lubrication? I have heard of people doing that with Shimano systems (mineral oil of course for Shimano brakes).

  11. #11
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    Quote Originally Posted by Ferdball
    Thanks for this. During bleeding, I find out that I have a stuck piston in each of my calipers. Any idea where to get the new o-rings that they list? It says I need new o-rings for the banjo bolt and some square edge o-rings.
    Juicy threes do not use banjos

  12. #12
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    Quote Originally Posted by MitchD
    Juicy threes do not use banjos
    To clarify, I have Juicy 5's.
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  13. #13
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    Quote Originally Posted by AK47
    Thanks. Is it bad for the seals to use a drop or so of DOT 4 brake fluid on the pistons for lubrication? I have heard of people doing that with Shimano systems (mineral oil of course for Shimano brakes).
    That's what I did with the pistons and the square edged o-rings. I can't imagine installing them in there dry. I hope this doesn't hurt.
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  14. #14
    ang
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    Been reading the thread about Juicy 3 problem, so there is something wrong if the piston cannot retract?

    When I pump the lever, the right side piston does not move, the left side piston does move however, it cannot retract and I have to use a wrench to force it back.

    Now the pads are rubbing the disc.

  15. #15
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    Quote Originally Posted by ang View Post
    Been reading the thread about Juicy 3 problem, so there is something wrong if the piston cannot retract?

    When I pump the lever, the right side piston does not move, the left side piston does move however, it cannot retract and I have to use a wrench to force it back.

    Now the pads are rubbing the disc.
    Yes you have a problem.
    You need to clean and lubricate the pistons see my post at 3.
    Also a brake bleed might be a good idea.

    If that doesn't work. A full rebuild may be needed. Then a new brake set may be cheaper.
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  16. #16
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    Duct tape iz like teh Force. It has a Lite side and a Dark side and it holdz the Universe together.

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