This comprehensive service repair manual covers the Komatsu 155-4 Series Diesel Engine, specifically for engines with serial numbers 10011 and up. It provides detailed instructions and technical specifications for every aspect of the engine's operation and maintenance, making it an indispensable tool for technicians and mechanics. The manual begins with an overview of the engine's general structure, including specifications, assembly drawings, weight table, and performance curves. It then delves into the intricate details of the engine's systems, such as the intake and exhaust, turbocharger, aftercooler, engine body, lubrication, fuel system, cooling system, and accessories. Comprehensive testing and adjusting procedures are meticulously outlined, covering essential tasks like adjusting fuel injection timing, conducting performance tests on the feed pump and fuel injection pump, and analyzing engine performance. A dedicated section for testing and adjusting tools and data ensures accuracy and efficiency. The manual then guides users through the disassembly and assembly processes for various engine components, including the water pump, turbocharger, starting engine, fuel injection pump, and power train. This section is designed to be a step-by-step guide for both routine maintenance and major repairs. To ensure optimal engine performance, the manual includes detailed maintenance standards for critical components such as the turbocharger, cylinder head, valves, crosshead, rocker housing, tappets, cylinder block, cylinder liner, crankshaft, camshaft, balancer shaft, timing gear, piston, connecting rod, oil pump, relief valves, and water pump. Finally, the manual concludes with a comprehensive repair and replacement section, covering detailed instructions on addressing issues related to the cylinder head, cylinder block, bush fitting, and shrink-fitted gear. A section dedicated to other important procedures completes this comprehensive resource. This manual is a valuable resource for anyone working on the Komatsu 155-4 Series Diesel Engine, providing the technical information and step-by-step guidance needed for successful repair, maintenance, and troubleshooting.

The Komatsu 155-4 Series Diesel Engine is a powerful and reliable workhorse designed for heavy-duty applications. This engine, part of the renowned Komatsu line, finds its home in a variety of industrial equipment, including excavators, loaders, bulldozers, and other construction machinery. Known for its robust construction and efficient operation, the 155-4 Series engine is a testament to Komatsu's commitment to quality and durability. It boasts a displacement of 15.1 liters, providing ample power for demanding tasks. The engine's design incorporates numerous advanced features, such as a high-pressure fuel injection system for optimal combustion and reduced emissions, a durable cast iron cylinder block for increased longevity, and a sophisticated cooling system to maintain peak performance under even the most challenging conditions. The Komatsu 155-4 Series Diesel Engine's Service Repair Shop Manual is an essential resource for technicians and mechanics working on these powerful engines. This comprehensive guide provides detailed information on every aspect of the engine's operation, from basic maintenance procedures to complex troubleshooting and repair techniques. The manual is meticulously organized with clear diagrams and step-by-step instructions, ensuring that even novice technicians can confidently perform service and repairs. It covers topics such as engine assembly and disassembly, fuel system, lubrication system, cooling system, electrical system, and troubleshooting procedures for common engine issues. Equipped with this manual, technicians can diagnose and repair engine problems effectively and efficiently, minimizing downtime and ensuring optimal performance of the Komatsu 155-4 Series engine.