The Caterpillar 319D LN Excavator is a versatile hydraulic excavator designed for heavy-duty earthmoving operations. It is powered by a Cat® C4.2 ACERT™ engine with a displacement of 256.3 cubic inches (4.2 liters), delivering a gross power of 131 hp (98 kW) and net power of 125 hp (93 kW), ensuring robust performance with efficient fuel combustion and reduced emissions. The engine features electronic fuel injection controlled by the ADEM™ A4 Engine Controller, optimizing fuel use for various applications. The machine offers three boom and stick options to provide maximum versatility in reach and digging capabilities. The shortest stick option delivers a max digging depth of 19.5 ft, max cutting height of 29.2 ft, and max horizontal reach of 28.5 ft, while the longest stick extends these up to 22.7 ft depth, 31.6 ft cutting height, and 31.7 ft reach along the ground. Maximum vertical wall digging depth ranges from 15 ft to 18.8 ft across the options. The bucket capacities range from a minimum of 0.6 cubic yards up to a maximum of 1.4 cubic yards, with a reference capacity of 1.1 cubic yards, suitable for various material densities. With an operating weight of approximately 42,946 lbs (19,480 kg) and a ground clearance of 1.5 ft, the 319D LN has a width of 8.6 ft across tracks and a tail swing radius of 8.3 ft, offering good maneuverability in confined spaces. The undercarriage features 23.7-inch shoes and a track gauge of 6.6 ft, optimizing stability and ground pressure of 5.9 psi. Maximum travel speed is 3 mph (5 kph), with a drawbar pull force of 46,468 lbs. Hydraulic system specifications include a main pump flow capacity of 7.1 gpm and relief valve pressure up to 5,076 psi, supporting powerful and precise implement control. Swing speed reaches 11.1 rpm, facilitating smooth operation. The fuel tank capacity is 79.3 gallons, with engine oil and cooling system fluid capacities of 5.2 and 5.9 gallons respectively. The 319D LN's shipping dimensions range around 10.2–11.6 ft in height and approximately 29 ft in length depending on boom/stick configuration, enabling ease of transport. This combination of power, reach, digging force, and maneuverability makes the Caterpillar 319D LN an efficient machine for a wide range of excavation tasks.