10 axel dog tracking

Discussion in 'Heavy Haul Trucking Forum' started by Heavyhauler904, Dec 31, 2019.

  1. Dec 31, 2019 #1
    Heavyhauler904

    Heavyhauler904 Bobtail Member

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    Dec 31, 2019
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    What could cause a loaded 10 axel to dog track? Tri trailer tanden booster shims all equal in size. Thought it might be the slope of the road but seems to go unchanged. Next thought would be lowering hydraulic pressure in the booster.
     
    Heavyhauler904, Dec 31, 2019
    Heavyhauler904, Dec 31, 2019
    #1
    blairandgretchen Thanks this.
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  3. Jan 3, 2020 #2
    AModelCat

    AModelCat Road Train Member

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    Axle misalignment would be the first thing I'd check for.
     
    AModelCat, Jan 3, 2020
    AModelCat, Jan 3, 2020
    #2
  4. Jan 3, 2020 #3
    Mike250rs

    Mike250rs Heavy Load Member

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    Is it worse loaded? May check deck heights if the axles are straight.
     
    Mike250rs, Jan 3, 2020
    Mike250rs, Jan 3, 2020
    #3
  5. Jan 3, 2020 #4
    beastr123

    beastr123 Road Train Member

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    check for worn pins in the deck/axle area or axle/booster area.
    an out of round pin can cause this (50/thou wear in the wrong place can be 4 or 5 inches at the rear of the tridem)
     
    beastr123, Jan 3, 2020
    beastr123, Jan 3, 2020
    #4
    kptnt2016 Thanks this.
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