This comprehensive Komatsu 155-4 Series Diesel Engine Service Repair Manual provides detailed technical information and step-by-step instructions for maintaining and repairing your Komatsu engine. The manual covers a wide range of Komatsu models, including the D80A-17, D85A-17, D95S-1, D150A-1, D155S-1, D155W-1, D155C-1, D155A-2, D355A-1, D355C-3, EG300-1, EG300-2, D355A-3, D355A-5, and many more, all equipped with Komatsu's S4D155-4, S6D155-4, S6D155G-4, SA6D155-4, 2G84-8, 2K68, and 28K engines. The manual offers a wealth of information, covering all aspects of your engine: * **General Information:** Understand the fundamentals of the Komatsu 155-4 engine, its design, specifications, and operating principles. * **Engine Mechanical:** Delve into the intricacies of the engine's mechanical components, including the crankshaft, connecting rods, pistons, and cylinder heads. Learn how to diagnose and repair common mechanical issues. * **Fuel System:** Discover the inner workings of the fuel system, from fuel lines and filters to the injection pump and injectors. Master the art of troubleshooting and resolving fuel-related problems. * **Exhaust System:** Gain insights into the exhaust system's components, including the exhaust manifold, catalytic converter, and muffler. Learn how to identify and address exhaust system issues. * **Cooling System:** Understand the importance of maintaining a healthy cooling system. The manual provides detailed information on the radiator, water pump, thermostat, and other cooling system components. * **Lubrication System:** Learn how the lubrication system keeps your engine running smoothly. Discover the role of the oil pump, oil filter, and oil pan. * **Electrical System:** Dive into the electrical system, including the starter, alternator, wiring harness, and sensors. * **Intake System:** Explore the components of the intake system, such as the air filter, air intake manifold, and turbocharger. * **Preheating System:** Understand the preheating system, essential for starting the engine in cold weather. This comprehensive manual is an invaluable resource for anyone seeking to perform repairs, maintenance, or troubleshooting on their Komatsu 155-4 series diesel engine. With its detailed diagrams, clear instructions, and comprehensive coverage, it empowers you to tackle even the most complex engine issues with confidence.

The Komatsu 155-4 diesel engine is a robust and powerful powerplant designed for a wide array of heavy equipment applications. This engine, featured in several Komatsu models, including the D80A-17, D85A-17, D95S-1, D150A-1, D155S-1, D155W-1, D155C-1, D155A-2, D355A-1, D355C-3, EG300-1, EG300-2, D355A-3, and D355A-5, delivers exceptional performance and reliability. Its robust design and advanced engineering contribute to its ability to handle demanding tasks in various environments. This specific engine model is renowned for its high horsepower output and impressive torque, enabling it to power heavy-duty applications like bulldozers, excavators, and other large construction machinery. Its fuel-efficient design ensures optimal operation, minimizing fuel consumption and maximizing productivity. The Komatsu 155-4 diesel engine is engineered for durability, with high-quality components and robust construction, ensuring long service life even in demanding conditions. The engine's sophisticated cooling and lubrication systems maintain optimal operating temperatures and protect vital components from wear, further enhancing its reliability. With its exceptional performance, durability, and fuel efficiency, the Komatsu 155-4 diesel engine is a reliable power source for demanding heavy equipment operations.