This Service Repair Shop Manual covers the Komatsu WA430-6H Wheel Loader, designed for heavy machinery applications. Built with robust engineering, this diesel-powered equipment is known for its reliability and performance in demanding environments. The WA430-6H, identified by serial number prefix H50051 and up, is a testament to Komatsu's commitment to producing durable and efficient machinery for various industrial tasks. This manual provides comprehensive guidance for all aspects of service and repair, including step-by-step procedures for testing, adjusting, dis-assembly, assembly, and preventative maintenance. It is an essential resource for heavy machinery mechanics, offering detailed information to ensure the optimal performance and longevity of the WA430-6H Wheel Loader. The scope of coverage is designed to assist technicians in all maintenance and repair operations.