The Wacker Neuson 6003 Track Excavator is a robust piece of equipment engineered for demanding work environments. Featuring a powerful Yanmar 4TNV98 diesel engine, this machine offers reliable performance and efficiency. Notable features include an air suspension seat, joystick controls with proportional capabilities, a tilting cab for easier maintenance access, and a triple articulation boom, enhancing its versatility on job sites. The 6003 is designed to meet stringent emission standards, including Tier-2, Tier-3, and 3A, reflecting a commitment to environmental responsibility alongside operational excellence. This Workshop Service Repair Manual provides comprehensive guidance for the Wacker Neuson 6003 Track Excavator. It covers essential maintenance procedures, detailed troubleshooting steps for various systems including the engine, hydraulics, and electrical components, and presents critical technical specifications. The manual includes information on lubrication, diagnostic trouble codes, special tools, and system diagrams for hydraulics and wiring. Its purpose is to empower owners, mechanics, and technicians with the knowledge necessary to maintain, service, and repair the vehicle effectively, ensuring its longevity and optimal performance.