Brakes are all or nothing on dump truck

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Ls2gto89, May 20, 2024.

  1. Ls2gto89

    Ls2gto89 Bobtail Member

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    Apr 28, 2023
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    Hello, My brakes seem like they are all or nothing when stopping. They sometimes lock up when slowing down specially without a load. I have replaced the service valve no change.
     
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  3. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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  4. AModelCat

    AModelCat Road Train Member

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    2nd the above, likely the foot treadle.
     
  5. Rideandrepair

    Rideandrepair Road Train Member

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    At least take it apart. Clean up the plunger and cylinder with fine sand paper. Apply anti seize put it back together. It will get worse if not. When cold weather hits it might get stuck in applied position. Have to give it a good jab to release brakes. It’s no fun at all.
     
    Magoo1968 Thanks this.
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