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No front brake!!!

Discussion in 'The Pub' started by physicist, Nov 26, 2014.

  1. physicist

    physicist Active Member

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    My Bike:
    Hyosung ST7 (GV700C)
    Hi all
    I started my bike, went to pull out of carpark and NO FRONT BRAKE. The lever pulled all the way in with no effect. I managed to stop using the kill switch and clutch and a few seconds later I had brake again. It happened 4 more times, at random, on the way home. I had brake most of the time but it was completely unpredicatable as to when I would or would't have it. Was a nervous ride home in peak hour traffic. Any ideas? The bike wasn't hot though the weather was and I don't think its air trapped because pumping made no difference. It worked or it didn't. Hoping for some ideas.
     
    physicist, Nov 26, 2014
    #1
  2. risky

    risky risky

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    honda ca77, megelli x2,fzr yamaha x 5 ,maxim,cb750.cb600 hornet,zxr250,marusho magnum electra.
    are the caliper pistons seized,was the lever soft or hard, is there fluid in the master cylinder, any leaks?
     
    risky, Nov 26, 2014
    #2
  3. Tim_

    Tim_ resident nutcase Contributing Member Dirty Wheel Club

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    My Bike:
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    sounds like no pressure in the lines.. normally means blown seal somewhere allowing air into the brake lines or caliper.
     
    Tim_, Nov 27, 2014
    #3
  4. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Stuck seal in the master cylinder will sometimes do that, will require a rebuild with new cup on the piston.
     
    • Like Like x 1
    Murdo, Nov 27, 2014
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