This workshop manual covers the Komatsu SAA6D125E-5 diesel engine, part of the 125E-5 series. Engineered for robust performance and reliability, this inline 6-cylinder engine features a turbocharged and aftercooled aspiration system and direct injection for efficient power delivery. Its liquid-cooled system and forced lubrication ensure optimal operating temperatures and longevity. Designed to meet Tier 3 / EU Stage IIIA emissions standards, this engine is a powerful and dependable component for a wide range of heavy-duty applications, including excavators, bulldozers, wheel loaders, and more, as listed in the compatible machines section.

This comprehensive 589-page English workshop manual provides detailed information essential for the maintenance, repair, and troubleshooting of the Komatsu SAA6D125E-5 engine. It includes critical technical specifications, such as bore, stroke, displacement, and fluid capacities, alongside recommended maintenance procedures, including specific oil types and quantities. Owners, technicians, and mechanics will find this manual an invaluable resource for ensuring the continued optimal performance and service life of their equipment, covering all aspects from routine servicing to in-depth repairs.