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Discussion in 'Trucks [ Eighteen Wheelers ]' started by Ryan87, Aug 11, 2015.

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  1. Aug 11, 2015 #1
    Ryan87

    Ryan87 Bobtail Member

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    Aug 11, 2015
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    Just got this truck today. No idea what these switches are for(rear/front) anyone know? image.jpg image.jpg
     
    Ryan87, Aug 11, 2015
    Ryan87, Aug 11, 2015
    #1
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  3. Aug 11, 2015 #2
    Ryan87

    Ryan87 Bobtail Member

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    Aug 11, 2015
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    /
     
    Ryan87, Aug 11, 2015
    Ryan87, Aug 11, 2015
    #2
  4. Aug 11, 2015 #3
    Blackshack46

    Blackshack46 Road Train Member

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    Playing in the cow manure, PA
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    Ummm....
     
    Blackshack46, Aug 11, 2015
    Blackshack46, Aug 11, 2015
    #3
  5. Aug 11, 2015 #4
    Blackshack46

    Blackshack46 Road Train Member

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    Air bag dump? No that makes no sense. Did you try them? Operators manual?
     
    Blackshack46, Aug 11, 2015
    Blackshack46, Aug 11, 2015
    #4
  7. Aug 11, 2015 #5
    Tall Mike

    Tall Mike Road Train Member

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    looks like a dump valve for each of the rear axels and a dump valve for the tractor...

    are you running tag axels ??
     
    Tall Mike, Aug 11, 2015
    Tall Mike, Aug 11, 2015
    #5
  8. Aug 11, 2015 #6
    Cetane+

    Cetane+ Road Train Member

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    Albany, NY
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    Did it used to be hooked to belly dump trailers?
     
    Cetane+, Aug 11, 2015
    Cetane+, Aug 11, 2015
    #6
  9. Aug 12, 2015 #7
    Ryan87

    Ryan87 Bobtail Member

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    Aug 11, 2015
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    The truck was a custom order. It has pulled a salt water transport from day one and the trailer has leaf springs. I did try them. Didn't seem to do anything.
     
    Ryan87, Aug 12, 2015
    Ryan87, Aug 12, 2015
    #7
  10. Aug 12, 2015 #8
    Ryan87

    Ryan87 Bobtail Member

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    Aug 11, 2015
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    thanks for all the input. I just got the truck a few days ago and it there are some things about it that are a little confusing. There are wires with plugs that run to the front of the truck where you would normally have that extra plug for additional running light that says fog lights and the truck doesn't have a fog light switch.
     
    Ryan87, Aug 12, 2015
    Ryan87, Aug 12, 2015
    #8
  11. Aug 12, 2015 #9
    cnsper

    cnsper Road Train Member

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    Check for a 4 or 6 prong plug behind the cab. Those switches should provide power to different pins. I believe that Cetane+ is correct that they are belly dump controls. Even though it only hauled salt water they may have specified this configuration to have another option incase the water died off.
     
    cnsper, Aug 12, 2015
    cnsper, Aug 12, 2015
    #9
  12. Aug 12, 2015 #10
    GrapeApe

    GrapeApe Road Train Member

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    I've seen them on a lot of Petes, I was told that they are for belly dump trailers, but I have not seen anything official on that, nothing in any manual I've found. Everyone I've seen did nothing, they were plumbed to 2 ports on the firewall by the steering shaft, but capped off.

    Ours are car haulers that have suspension over lifts. We used one of them for that because it was a preplumbed air switch and all we needed to do was run an air line for the plugged port to the over lift pilot valve. We just used a label maker to put "Over Lift" over the icon on the switch.
     
    GrapeApe, Aug 12, 2015
    GrapeApe, Aug 12, 2015
    #10
    Cetane+ Thanks this.
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