The Komatsu WA600-3 and WA600-3D Avance wheel loaders are engineered for heavy-duty material handling and loading operations. These machines are recognized for their robust construction and reliable performance in demanding environments. Designed with advanced technology and built to exacting standards, the WA600 series offers exceptional efficiency and durability, making it a preferred choice for professionals in construction, mining, and logistics. Their powerful performance and operational versatility ensure they meet the challenges of complex job sites. This Service Repair Manual provides comprehensive guidance for the Komatsu WA600-3 and WA600-3D Avance wheel loaders, covering serial numbers WA600-3 50001 and up, and WA600-3D (TBG SPEC.) 50001 and up. It details general information, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other essential procedures. The manual is designed to assist owners, mechanics, and technicians in performing maintenance, troubleshooting, and repairs, ensuring the continued optimal performance and longevity of the equipment. Its clear, step-by-step instructions facilitate ease of use.