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Rear Brake Rubbing....

Discussion in 'FZR250.com - Archives' started by fzrcarl, Jun 6, 2006.

  1. fzrcarl

    fzrcarl New Member

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    Hi all, not posted in a while as the FZR's been in storage due to insurance running out! Well, the bikes been stood and when i moved it today it was really stiff to move, turns out the back wheel is locked up pretty tight.

    Lifted the bike up using the side stand and got a friend to spin the back, it wont budge, I can sit on the bike and walk with it but its stiff, and i can start it up and ride it, but obviously the rear disk is gettin extreamly hot extreamly quick!!!!!

    Any suggestions as to why its stuck?

    p.s the break lever seems fine...
     
  2. FZR Dude

    FZR Dude New Member

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    Sounds to me like the bike was left to sit with the bike in gear and the clutch plates have stuck together.

    If the rear caliper is stuck, or suspect, take a flathead screwdriver and pry the pads away from the rotor and check wheel spin again.
     
  3. koma

    koma New Member

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    The hint is that the rear disc gets extremely hot extremely quickly... so i'd be ruling out the clutch plates sticking.

    Time to unbolt the caliper, remove the brake pads, give the pistons a good clean and try and push them back into the caliper. If it moves but very unwillingly, repeat the process maybe 2 - 3 times to see if it gets any easier. Otherwise, it's going to be a matter of popping the pistons and giving the entire caliper a really good clean! Possibly also needs new seals in it. Either way, start from the top and remove the caliper to make sure it is the brakes that are binding on.

    As for why it's done it... no idea. Could someone have stood on the brake lever whilst it was in storage?
     
  4. Katatonic

    Katatonic New Member

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    If you push the tyre backwards and then forwards doesn't this move the piston in the calipers, disengaging the break?

    This is with drum brakes at least :p
     
  5. fzrcarl

    fzrcarl New Member

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    ive not had much time to really look at it, it may be possible about the break lever being pressed, as its been literally stood in the corner of the garage by some boxes, possible that a box or something has fell and kept the lever pressed... Cant look at it properly until thursday!
     
  6. FZR Dude

    FZR Dude New Member

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    I apparently did not read this part or it didn't register. More than likely the latter....

    disregard the following...

     
  7. hisdirt

    hisdirt New Member

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    Regardless of wether you ment to say that or not FZR Dude, its good to know that you shouldnt leave it in gear in storage!
     
  8. koma

    koma New Member

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    The clutch plates can stick if a bike is in storage regardless of if it's in gear or not. The advantage as i understand it to leaving it in neutral when in storage is that if you can get it started and leave it running, it's more likely that the movement in the gearbox/clutch will allow the plates to shake loose again.

    It should also be noted that any longterm storage of a motorbike, it's often a good idea to give it an oil change BEFORE you store it. For more handy hints... try searching around for 'long term storage' both in these forums, the Exup Brotherhood, and Google. <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt=":D" title="Very Happy" /><!-- s:D -->
     
  9. TiMBuS

    TiMBuS New Member

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    If there was a box on the lever they may be some pressure buildup in the brakes' pistons. Just undo the brake fluid nipples (hehe) and see if the pressure backs off. This will most likely incur a brake fluid change.. Which is not a big deal.

    In any case, if that doent work take the caliper off the rear wheel, target the issue (i think its overpressurised pistons, or the brake fluid jellyfied) and.. well, go from there.
     

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