Hydraulic excavators are entirely dependent on hydraulic systems. The hydraulic excavator’s base/undercarriage consists of a track or wheeled platform and provides transportation for the vehicle while supporting the chassis. The chassis allows driver to control the hydraulic excavator by using levers to drive the vehicle, raising the boom up and down, and controlling the bucket. Because the chassis is built on top of the undercarriage, it is able to rotate 360 degrees. The boom and bucket are attached to the chassis, work in conjunction to move materials, but are controlled independently.