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  1. #1
    Don't ride a Trek anymore
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    Join Date
    Sep 2008
    Posts
    390

    hayes mags grinding- can I adjust?

    i just put new pads on my hayes mag hydraulic brakes. The brakes came on a bike I got used, so Im not entirely used to them. when I put the pads in, they were too tight to even get the rotor in. I then pushed the calipers back, which gave the rotor a little more room, but the pads are still touching the rotor as the wheel spins. is this part of a normal break in cycle, or is there a way to adjust the pad distance? thanks

  2. #2
    mtbr member
    Reputation: 4slomo's Avatar
    Join Date
    Jul 2006
    Posts
    1,551
    On my Hayes HFX9's, I had to push the caliper pistons in successively farther a few times, before the new pads had enough clearance from the rotors. Think of it this way, when you pull the brake lever, the pads are pushed all the way to the disk, then when you let go of the brake lever, the o-ring seals need to have enough room to pull the pads back out of the way of the disk.

  3. #3
    ride hard take risks
    Reputation: dogonfr's Avatar
    Join Date
    Jan 2005
    Posts
    25,589
    When is the last time the fluid was replaced??
    Formotion Products
    http://www.formot

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