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freightliner cl120 buzzer goes on when using manual dump valve

Discussion in 'Trucks [ Eighteen Wheelers ]' started by POINTDEXTER, Jul 4, 2014.

  1. Jul 4, 2014 #1
    POINTDEXTER

    POINTDEXTER Light Load Member

    103
    46
    Mar 6, 2008
    Virginia Beach, Virginia
    0
    I just bought a 2007 CL120 detroit 60. The buzzer goes of when I flip the manual dump valve to the lower position.
    The main air pressure gauges don't move.
    The air bags deflate and inflate with no problem. I also have a air suspension gauge and it barely goes past zero. with manual dump valve switched to lower it goes to zero and when switched to auto the gauge goes up a tiny bit. I noticed last night the light on the air suspension gauge was on, but it's not on today. ????
     

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    POINTDEXTER, Jul 4, 2014
    POINTDEXTER, Jul 4, 2014
    #1
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  3. Jul 4, 2014 #2
    GrapeApe

    GrapeApe Road Train Member

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    Jan 7, 2013
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    So what's the issue? The buzzer is going off to make sure that you don't forget to air the suspension back up before you drive. There should also be a light on the dash or switch telling you that it's dropped.
     
    GrapeApe, Jul 4, 2014
    GrapeApe, Jul 4, 2014
    #2
    MJ1657 and POINTDEXTER Thank this.
  4. Jul 4, 2014 #3
    Ezrider_48501

    Ezrider_48501 Road Train Member

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    Apr 2, 2011
    bismarck, nd
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    what grapeape said plus the other gauge is a suspension load gauge shows how much air it takes to leval the rear truck suspension and gives you a idea of how much weight is on it. so suspension dumped. 0 psi raised bobtail very little psi
     
    Ezrider_48501, Jul 4, 2014
    Ezrider_48501, Jul 4, 2014
    #3
    POINTDEXTER Thanks this.
  5. Jul 4, 2014 #4
    POINTDEXTER

    POINTDEXTER Light Load Member

    103
    46
    Mar 6, 2008
    Virginia Beach, Virginia
    0
    Thanx
    I got out of a a older century and the wasn't an alarm to warn you. There wasn't a gauge for suspension.
    What would make the light on the gauge come on while bobtailing?
     
    POINTDEXTER, Jul 4, 2014
    POINTDEXTER, Jul 4, 2014
    #4
  7. Jul 4, 2014 #5
    VagabondTrucker

    VagabondTrucker Light Load Member

    81
    30
    Jun 28, 2014
    0
    My Pete, KW, and Freightshaker all used to do that, my International does not. It was nice to have to remind you that you need to fill it back up.
     
    VagabondTrucker, Jul 4, 2014
    VagabondTrucker, Jul 4, 2014
    #5
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