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Tractor/ Trailer Braking Help

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Chevyho, Oct 29, 2014.

  1. Oct 29, 2014 #1
    Chevyho

    Chevyho Medium Load Member

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    Dec 13, 2013
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    I have a tridem end dump pulled with 07 pete 379.. I have been getting some erratic trailer braking and flat spotting on inside of a couple tires on the trailer.. When investigating I noticed after city stop and go traffic my trailer brakes are really hot and my truck brakes are barely warm. Is it normal for the trailer to do most of the braking? When braking it feels like as soon as I touch the brake it puts all the air to the trailer, really hard to make a smooth stop.
     
    Chevyho, Oct 29, 2014
    Chevyho, Oct 29, 2014
    #1
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  3. Oct 30, 2014 #2
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    there are LSV valves on newer trucktors-trailers. If trailer is empty - low pressure in air bags and low brake pressure. More load - more brake pressure

    but some trailers got no LSV and overbrake usually
     
    Pablo-UA, Oct 30, 2014
    Pablo-UA, Oct 30, 2014
    #2
    Chevyho Thanks this.
  4. Oct 30, 2014 #3
    BeenJammin

    BeenJammin Light Load Member

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    Google- Phillips quick release Gladhand valve options. You have to reduce the lag time of air release on trailer braking, especially in city driving.
     
    BeenJammin, Oct 30, 2014
    BeenJammin, Oct 30, 2014
    #3
    Chevyho Thanks this.
  5. Oct 31, 2014 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    I think installing and ajusting LSV solves the problem
     
    Pablo-UA, Oct 31, 2014
    Pablo-UA, Oct 31, 2014
    #4
    Chevyho Thanks this.
  7. Oct 31, 2014 #5
    Chevyho

    Chevyho Medium Load Member

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    Ive started searching for a lsv, i think that will be the way to go. If anyone has a link to one please share, I am assuming it just runs off bag pressure.
     
    Chevyho, Oct 31, 2014
    Chevyho, Oct 31, 2014
    #5
  8. Oct 31, 2014 #6
    Bendix Tech Team

    Bendix Tech Team Bobtail Member

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    Jul 15, 2014
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    if you dont already like ben jammin suggested install some inline quick release valves (bendix pn is 800333)which will help the relase of the trailer brakes and reduce the time it takes for them to release. if youre concerned about pressures put a gauge on your blue glad hand and see if you are getting the same pressure there as one of your brake chambers on the tractor.
     
    Bendix Tech Team, Oct 31, 2014
    Bendix Tech Team, Oct 31, 2014
    #6
    Chevyho Thanks this.
  9. Oct 31, 2014 #7
    Chevyho

    Chevyho Medium Load Member

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    Thanks, do the valves install at the glad hands? Put one on service and emergency?
     
    Chevyho, Oct 31, 2014
    Chevyho, Oct 31, 2014
    #7
  10. Oct 31, 2014 #8
    Bendix Tech Team

    Bendix Tech Team Bobtail Member

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    Yes they do. One end is male the other female so just unthread your glad hand, and put it in between the glad hand and hose. 1/2" NPT both ends
     
    Bendix Tech Team, Oct 31, 2014
    Bendix Tech Team, Oct 31, 2014
    #8
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