Boiler in a power plant has two functions. The Combustion system converts energy in coal to Heat. Water and steam system converts the heat to steam at high pressures and temperatures.
Automatic transmission solenoid is located inside the transmission. The automatic control solenoid is part of a unit called the solenoid pack that functions like a sensor signaling the engine by adding or alleviating the hydraulic pressure of the system.This allows you to shift between gears smoothly.he transmission is an automotive part located at the back of the engine and allows the vehicle to move based on its ability to shift gears. The shifting of gears is made possible the automatic transmissions solenoid.
  You will have to remove the transmission pan, and then the valve body. The solenoid back is under all that. The valve body has about 17 bolts holding it in.   This can all be done with the transmission in the car still, but I suggest doing it on a lift.