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Cascadia Dump Valve Installation Help.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LoneRanger, Dec 9, 2021.

  1. Dec 9, 2021 #1
    LoneRanger

    LoneRanger Road Train Member

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    So my truck doesn’t have a suspension dump valve. I was able to find a dump valve off another Cascadia but I need help figuring out what the port marked dump pilot port means.

    I got the switch, I can get the valve now. Just want to make sure I have everything I need before I tear things down.

    2013 Cascadia DD15 dumpless rig.

    F4A75251-DC38-4C83-BF6F-993A7BAFFFEA.jpeg
     
    Last edited: Dec 9, 2021
    LoneRanger, Dec 9, 2021
    LoneRanger, Dec 9, 2021
    #1
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  3. Dec 9, 2021 #2
    Goodysnap

    Goodysnap Road Train Member

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    Air applied to the dump pilot port dumps the bag air to exhaust. Air off, they reinflate.
     
    Goodysnap, Dec 9, 2021
    Goodysnap, Dec 9, 2021
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    LoneRanger Thanks this.
  4. Dec 9, 2021 #3
    LoneRanger

    LoneRanger Road Train Member

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    now that makes it easier to do. Thanks.
     
    LoneRanger, Dec 9, 2021
    LoneRanger, Dec 9, 2021
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  5. Dec 9, 2021 #4
    flood

    flood Road Train Member

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    Also check the wiring and air lines

    My truck (prestar) has 2 air servos under the cab on the frame hooked together... 1 to dump and 1 to air up..
    You may also need to have the body controller reprogrammed so the switch will even work
     
    flood, Dec 9, 2021
    flood, Dec 9, 2021
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    LoneRanger Thanks this.
  7. Dec 9, 2021 #5
    LoneRanger

    LoneRanger Road Train Member

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    #### electronic trucks you are right. The switch has a plug, for what I don’t know. I think I should look for a manual switch.
     
    LoneRanger, Dec 9, 2021
    LoneRanger, Dec 9, 2021
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    Goodysnap Thanks this.
  8. Dec 9, 2021 #6
    Goodysnap

    Goodysnap Road Train Member

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    Agree.... mount switch- run air lines- done
     
    Goodysnap, Dec 9, 2021
    Goodysnap, Dec 9, 2021
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    LoneRanger Thanks this.
  9. Dec 9, 2021 #7
    flood

    flood Road Train Member

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    more than likely your trucks factory wiring has the plug in the dash for the switch...

    Truck makers most of the time only have 1 wiring harness for all the trucks....

    My prostar has a block under the cab..
    All of them have the same block if it has the dump value thay just plug on the 2 servos.... if not those 2 are empty
     
    flood, Dec 9, 2021
    flood, Dec 9, 2021
    #7
    LoneRanger Thanks this.
  10. Dec 9, 2021 #8
    LoneRanger

    LoneRanger Road Train Member

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    I’ll take a look at it when I have a chance. But my issue would be is that I now need 2 servos, and truck reprogrammed. Costing way more than let’s say a manual switch.
     
    LoneRanger, Dec 9, 2021
    LoneRanger, Dec 9, 2021
    #8
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