The Caterpillar 3003 - engine is a vertical, water-cooled 4-stroke 3-cylinder diesel engine with a displacement of 0.954 Liters and has an output of 28 hp with a maximum speed of 3600. Caterpillar 3003 engines are used in agricultural, transportation and other industrial applications. Such as the Caterpillar 301.5CR, an excavator. Caterpillar is mainly engaged in the design and construction of heavy machinery for civil engineering and mining. The company also produces generator sets and other equipment powered by diesel engines and gas turbines.