Power takeoff refers to using the vehicle’s power train as a power source to perform some work other than moving the vehicle. Examples of this work include operating auxiliary equipment such as a wrecker and snowplow lifts, dump bodies, hydraulic/pneumatic tools and so on. The PTO unit is located between the power train and the device it powers. When a vehicle is doing this work while it is not moving, keep in mind that it is also deprived of the cooling benefits airflow provides. Because of this, it is important not to block the front grille or bumper openings. Specific precautions are listed in the Body Builders Layout Book. While Ford does not offer the actual PTO units, Ford F-Series Super Duty® engineers worked closely with two PTO after market suppliers (Parker Chelsea and Muncie) during development of the truck. This work helped create two different Ford-specific after market units that bolt directly onto the transmission’s power takeoff interface (the interface is standard on F-Series Super Duty models equipped with a manual transmission, optional with automatic transmission).