The 89,072-lb. PC390LC-10 replaces the PC380LC, offering 1.7% more operating weight and 6.2% more horsepower. A Komatsu SAA6D114E-5 Tier 4 Interim diesel delivers 257 hp. A variable-geometry turbocharger, exhaust-gas recirculation (EGR) and diesel particulate filter keep the engine in emissions compliance. The closed-center, load-sensing hydraulic system with variable speed matching adjusts engine speed based on the hydraulic pump output for both light- and heavy-duty applications. Komtrax telematics technology and Komatsu Care complimentary factory scheduled maintenance are standard.