This factory service manual covers the Komatsu -3 Series wheel loaders, including models WA65-3, WA65-3 Parallel Lift, WA75-3, WA85-3, WA90-3, and WA95-3. These machines are engineered for robust performance and reliability in various demanding operational environments. This manual provides comprehensive information to ensure these units maintain their operational integrity and efficiency throughout their service life. The purpose of this manual is to provide detailed guidance for the maintenance, service, diagnosis, and repair of the specified Komatsu wheel loader models. It includes step-by-step instructions, exploded views, and diagrams covering all repair procedures. The content is organized into sections such as Safety, General Information, Structure and Function, Testing and Adjusting, Disassembly and Assembly, and an Appendix, offering essential information for owners, technicians, and mechanics to effectively maintain and repair these machines.