This Service Repair Workshop Manual provides comprehensive information for the Komatsu WA400-5 Wheel Loader, serial number 70001 and up. Designed for construction and material handling applications, this heavy equipment is engineered for reliability and performance. Its robust construction and advanced features ensure efficient operation in demanding environments. This manual is your essential guide for maintaining and repairing the Komatsu WA400-5. It covers general maintenance, structure and function, maintenance standards, testing and adjusting, and disassembly and assembly procedures. With easy-to-read text, top-quality diagrams, step-by-step instructions, and highly detailed exploded views, this English-language resource empowers owners, mechanics, and technicians to keep the equipment in optimal working condition.