hydraulic disc brakes rub

superdry
superdry Posts: 36
edited July 2009 in MTB workshop & tech
I took off the wheels on me new bike to change the tires. Now both brakes are slightly rubbing.
They are hydraulic avid juicy threes. What I have done wrong?

Comments

  • nicklouse
    nicklouse Posts: 50,673
    nothing. just go out and use it.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • superdry
    superdry Posts: 36
    ....will ignoring it go away. It's not like the wife surely?!!?
  • nicklouse
    nicklouse Posts: 50,673
    yes it will go away. the reson normally is that the wheel is not quite in exactly the same place so the pads need to bed back in a gain.

    should go in a short time.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • rhext
    rhext Posts: 1,639
    If it doesn't go away, it's fairly easy to recentre the calipers. Ride it for a few miles then if they're still rubbing:

    1) undo the allen bolts holding the calipers to the frame/fork (you don't need to undo them much, just loosen them).

    2) hold the brakes full on (which will move so they're properly centred), then do the bolts up again nice and tight.

    Job done!
  • nicklouse
    nicklouse Posts: 50,673
    rhext wrote:
    If it doesn't go away, it's fairly easy to recentre the calipers. Ride it for a few miles then if they're still rubbing:

    1) undo the allen bolts holding the calipers to the frame/fork (you don't need to undo them much, just loosen them).

    2) hold the brakes full on (which will move so they're properly centred), then do the bolts up again nice and tight.

    Job done!

    Sorry WRONG.

    If the brakes are POST mount then the caliper to adaptor bolts can be adjusted like that ( unless it is a directly mounted Post mount caliper to fork or to a post mount frame mount very rare.

    EG a Hayes brake.

    hayes5.jpg

    http://www.parktool.com/repair/readhowto.asp?id=138
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • superdry
    superdry Posts: 36
    I'm away camping this week sop hopefully the brakes will bed back in while I;m away.
  • captainfly
    captainfly Posts: 1,001
    I had similar issue whhen I first took my wheels off, it turned out I hadn't got the wheel seated properly back in the drop outs because it was upright when I put them back. I sorted it out turning the bke upside down opening the quick relese/s then closing them, the rub had virtualy gone. Then it was a case of bedding in the brakes.
    -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
    Mongoose Teocali
    Giant STP0

    Why are MTB economics; spend twice as much as you intended, but only half as much as you wish you could afford? :roll:
  • rhext
    rhext Posts: 1,639
    Ooops....

    ....well, it worked fine on mine (Rockhopper 2004, Manitou forks, Shimano brakes). Have I got the terminology wrong, or the principle, or was I just lucky having a combination which works? Did it on advice from some riding mates, who had several different makes of brake. Seem to recall the calipers bolted into adapters, at least at the rear of the bike, and those bolts were the ones which needed loosening!

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