The Komatsu WA500-3LK is a robust wheel loader designed for demanding operational environments. Featuring a powerful Komatsu SAA6D140E-3 direct injection diesel engine, this machine delivers substantial net power of 258 kW (346 HP) and is equipped with the Komatsu Advanced Transmission Electronic Control System (K-ATOMiCS) for efficient power transfer. Its substantial operating weight of 35900 kg and standard 26.5R25 tires underscore its capability for heavy-duty applications. The ROPS and FOPS compliant cabin ensures operator safety and comfort during operation, reflecting Komatsu's commitment to engineering quality and reliability in its equipment. This Service Repair Workshop Manual provides comprehensive guidance for the maintenance and repair of the Komatsu WA500-3LK wheel loader, serial number range A71001 and up. It covers essential areas including detailed engine specifications, transmission system information, hydraulic system parameters, and lubrication capacities for various components. The manual also outlines maintenance procedures and recommended replacement intervals for filters and other critical parts. This document is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safe operation of their WA500-3LK equipment.