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cant get my front wheel back on due to breaks

  • 12-07-2010 9:42pm
    #1
    fguihen
    Registered Users Posts: 669 ✭✭✭


    I took the front wheel of my trek 6300 off to fit the bike in the car. on putting it in i inadvertently pulled the breaks. now, i cant get the front wheel back on as the break disk wont go back in between the break pads. I tried forcing it a bit but the disk just cuts into the break pad material so i dont want to force it further.

    the breaks are avid jucy 3 breaks. ive never had disk breaks before. what do i do here?


Comments

  • #2
    uberwolf
    Registered Users, Registered Users 2 Posts: 7,580 ✭✭✭uberwolf


    From the juicy 3 manual (and found elsewhere).
    squeeze the brake pad 5-6 times for one second then hold the lever back for 5 seconds i tried it after doing same as you works a treat, to prevent this, when you get the brakes you get that red plastic spacer between the pads when you remove the wheel put it between the pads (its a spacer) it prevents your pads from adjusting.

    5 meg manual excerpt here


  • #3
    fguihen
    Registered Users Posts: 669 ✭✭✭fguihen


    thanks for that.

    what it says, word for word is:
    Squeeze the front lever 5 or 6 times, then hold. Compress the lever (with your hand
    or a rubber band), then snug the CPS bolts enough to hold the caliper in place. Spin
    the wheel and check for rotor drag. If there is drag, loosen the CPS bolts and repeat.
    Once there is no drag, torque the CPS bolts in an alternating fashion to the specified torque.
    Repeat the procedure for the rear brake.

    I dont know what it means by "snug the CPS Bolts". as it worked perfectly without CPS bolt adjustment before today, id rather not adjust the CPS Bolts.

    Before i saw your post, i found another post that says to pry the calipers apart with a flat thin metal object. i used a paint scraper so as not to damage the pads.

    Wheel is back on now, but is rubbing ever so slightly. wonder if CPS bolt adjustment will help?


  • #4
    uberwolf
    Registered Users, Registered Users 2 Posts: 7,580 ✭✭✭uberwolf


    My understanding from briefly scanning the documents (and not owning a mtb) is that the brakes auto adjust for wear? so that the reset you're performing now will require a little adjustment despite everything being ok originally.

    But disregard everything I say until someone who knows what they're talking about appears :o


  • #5
    HivemindXX
    Registered Users, Registered Users 2 Posts: 1,208 ✭✭✭HivemindXX


    I'm assuming your brakes are roughly the same as the disc brakes on my MTB. If they are not and this destroys them I'm not taking any responsiblity!

    The bit of the manual you guys are quoting is the procedure for tightening the brakes properly once the wheel is already in place and after you've reattached the brake assembly when it has been off completely

    What you've done is pull the level with no disc in the way so the pads have closed completely. I've done this plenty of times and the solution is to take the flat blade screwdriver from your multitool, carefully insert it between the closed pads and gently lever them back open. You'll find they can be pushed back in to their housing with no problem. After this is done the brakes are completely loose so you do the squeeze five times thing so the next time you pull them they actually work.

    I've had to do this quite a few times and as far as I can tell it's never hurt them.


  • #6
    fguihen
    Registered Users Posts: 669 ✭✭✭fguihen


    HivemindXX wrote: »
    I'm assuming your brakes are roughly the same as the disc brakes on my MTB. If they are not and this destroys them I'm not taking any responsiblity!

    The bit of the manual you guys are quoting is the procedure for tightening the brakes properly once the wheel is already in place and after you've reattached the brake assembly when it has been off completely

    What you've done is pull the level with no disc in the way so the pads have closed completely. I've done this plenty of times and the solution is to take the flat blade screwdriver from your multitool, carefully insert it between the closed pads and gently lever them back open. You'll find they can be pushed back in to their housing with no problem. After this is done the brakes are completely loose so you do the squeeze five times thing so the next time you pull them they actually work.

    I've had to do this quite a few times and as far as I can tell it's never hurt them.

    This is what i ended up doing and it worked. gota get a spacer for the breaks when the wheel is off.

    Thanks folks.


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