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Dump Valve for spread axle

Discussion in 'Peterbilt Forum' started by cecchi, Dec 15, 2011.

  1. Dec 15, 2011 #1
    cecchi

    cecchi Bobtail Member

    1
    0
    Dec 15, 2011
    loris, sc
    0
    bought a Peterbilt 2006 , plugged in trailer, everything works except the dump valve on spread axle . Took it for repair, but when we arrived it was working, yet when we get it home it no longer works. It worked fine with the other tractor. This tractor has the dash switch, and sometimes it works and sometimes it does not. any suggestions. called guy at shop where we took it , he says no ground from tractor to trailer ??
     
    cecchi, Dec 15, 2011
    cecchi, Dec 15, 2011
    #1
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  3. Dec 15, 2011 #2
    Prairie Boy

    Prairie Boy Road Train Member

    3,258
    1,914
    Nov 18, 2010
    Edmonton, AB
    0
    Spread the prongs on the center pin of your trailer power connection. The center pin is the larger one. The ground is not consistent.
     
    Prairie Boy, Dec 15, 2011
    Prairie Boy, Dec 15, 2011
    #2
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