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Air "feedback" through footvalve

Discussion in 'Freightliner Forum' started by tesla4all, Oct 5, 2013.

  1. Oct 5, 2013 #1
    tesla4all

    tesla4all Light Load Member

    176
    33
    Dec 8, 2008
    Southeastern US
    0
    Hi, .. relying on someone else's experience here... 99 classic.. on cool mornings I take off and the first few times I apply the brakes it will literally throw you through the windshield!.. I can hear air feeding back through the foot-valve. After it has been used a couple of times it quits this behavior. If weather is hot .. don't have this problem. I'm assuming that something is sticking somewhere. Heard of the "bobtail proportioning relay, or bobtail ratio" valve being the issue.. any thoughts folks?
     
    tesla4all, Oct 5, 2013
    tesla4all, Oct 5, 2013
    #1
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  3. Oct 5, 2013 #2
    baha

    baha Road Train Member

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    2,834
    Jul 25, 2013
    ga
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    1st clean all around brake ped. with motor off in the morning lis. 4 the leaks.
     
    baha, Oct 5, 2013
    baha, Oct 5, 2013
    #2
    tesla4all Thanks this.
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