The Komatsu WA600-3 and WA600-3D (TBG SPEC.) series represents robust construction equipment designed for demanding operational environments. These machines are engineered for reliability and performance, featuring powerful Komatsu engines, advanced transmissions, and substantial operating capacities. With an approximate operating weight of 47,000 kg and a standard bucket capacity of 6.0 m³, the WA600-3 series is well-suited for heavy-duty material handling tasks. Its comprehensive design ensures durability and efficiency in various industrial and construction applications. This Service Repair Manual provides detailed information for the Komatsu WA600-3 series, covering all aspects from bumper to bumper. It is structured to assist Do-It-Yourself enthusiasts and professional technicians of all skill levels. The manual includes step-by-step instructions, high-quality diagrams, and covers essential topics such as general information, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other critical areas. Its purpose is to facilitate proper maintenance, repair, and troubleshooting, ensuring the optimal performance and longevity of the equipment.