This Service Repair Workshop Manual covers the Komatsu WA320-5 series, including models WA320, WA320L-5, and WA320-5H, manufactured from the fifth generation onwards. These wheel loaders are engineered for robust performance and reliability, featuring a Komatsu SAA6D102E-2 turbocharged, intercooled diesel engine producing approximately 111 kW (149 HP). With a Komatsu Automatic Transmission, 4 forward and 4 reverse gears, and a substantial operating weight of around 17,765 kg (39,165 lbs), these machines are designed for demanding industrial and construction applications. Notable specifications include a bucket capacity ranging from 2.5 to 3.5 m³ and a rated load of up to 11,300 kg. This comprehensive manual provides detailed information essential for the maintenance and repair of your Komatsu WA320-5 series wheel loader. It encompasses a wide range of topics, including engine specifications, transmission details, lubrication capacities, and replacement intervals for critical components such as engine oil, hydraulic filters, and air filters. You will find guidance on troubleshooting, technical specifications, and safety procedures, ensuring that owners, mechanics, and technicians have the necessary resources to keep the equipment operating efficiently and safely.