Front Calipers - One Hot, One Cold after Rebuild

Discussion in '5th Generation 1998-2001' started by mikerob97, Dec 1, 2014.

  1. mikerob97

    mikerob97 New Member

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    I just finished my brake delinking project over the Thanksgiving holiday and with some nice weather on Sunday, decided to take bike out for a test ride. I installed two new stainless steal lines on the front coming from the master cylinder. After an extensive amount of brake bleeding, I think I have all of the air out. So I took the bike around the block a few times to bed-in the brakes and see how the bike rode. Bike rides nice - both front and rear braking improved as I was riding which is to be expected as they begin to bed-in. After I finished the 20 min ride and pulled the bike into the garage, I was inspecting the front calipers and noticed one caliper was warm /hot to the touch - as expected, but the other was cold...not expected.

    The calipers are CBR 954 units with all the seals replaced - so there is no way that the pistons are hung up. Pads are new. Has anyone experienced this where one caliper runs hot and the other cold? The front brake lever has good feel, but is it possible that there is still air trapped in the caliper on the cold side causing the calier not to squeeze the rotor correctly.

    Thanks in Advance - Mike
     


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  2. squirrelman

    squirrelman Member

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    Y^our operation was not quite a success it seems. You may need to re-bleed at a banjo bolt.
     


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  3. mello dude

    mello dude Administrator

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    A swag - from your description it seems one caliper is doing all the work. Agree with squirrelman, (OMG) trace your lines and re-bleed and check banjo fittings.
    Speedbleeders on the bike?
     


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  4. mikerob97

    mikerob97 New Member

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    Yes - one caliper is doing all the work. Lines are a straight shot to the calipers - two lines both attached the the master with a double banjo. And yes, I took your advise and added Speedbleeders. I will try re-bleeding the front brakes this weekend - not sure what else this could be. Have not seen this problem ever in a bike.

    BTW - the delinking project worked out great - love the clean look, especially on the rear. Will post finished pictures later this month - will combine into one writeup. Mike
     


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  5. mello dude

    mello dude Administrator

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    Bleed the non working caliper first. Something is goofy. I might even block off the good side to play with the bad side to see the effect - as a test of course.
    There are double banjos available with a bleed valve in them, using one of those may help too. - Its one of those - "gotta be there" things to debug.
     


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  6. squirrelman

    squirrelman Member

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    If it's not a hydraulic problem, then the pads might have been installed a bit wrong maybe a misplaced pad guide spring (or the wrong pads)....or the caliper isn't sliding on the pins properly.
     


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