This Service Shop Repair Manual covers the Komatsu PC03-2 Hydraulic Excavator, serial numbers 21587 and up. Engineered for reliability and performance, this machine is designed to meet the demanding needs of various construction and excavation tasks. Its robust construction and advanced hydraulic system ensure efficient operation and durability in challenging environments. This manual provides comprehensive servicing instructions, repair procedures, preventative maintenance schedules, and troubleshooting guidance. It includes detailed illustrations, exploded diagrams, and technical specifications to assist owners, mechanics, and technicians in maintaining and repairing the PC03-2 Hydraulic Excavator. The content is designed to be an indispensable resource for all service and repair needs.