How does the dumper on a dump truck work?
It’s all pretty much hydraulic. It will either dump up with cylinders under the bed or it will push the load out the back with a plate that has cylinders behind it. The hydraulics are powered by a pump thats normally run off the pto on the transmission or driven by the crank shaft. The pto is engaged and it turns the pump. The pump sends the fluid to a valve the driver engages. the valve lets the fluid go to the cylinder that pushes the load.
