This comprehensive Komatsu PC650-3, PC650LC-3, PC650SE-3 Hydraulic Excavator Service Repair Manual is specifically designed for models with serial numbers 10501 and up. This manual provides in-depth information on maintenance, assembly, disassembly, and servicing procedures for your Komatsu excavator. It covers all essential aspects of the machine, enabling you to perform repairs and maintenance tasks confidently and effectively.

The manual is structured into several sections, covering:

**Engine:** This section details the SA6D140-1 engine, crucial for understanding the excavator's powertrain. While this manual provides information on the engine, refer to the separate 140 Series Engine Shop Manual for comprehensive details.

**Power Train:** This section delves into the transmission, axles, and other components that transfer power from the engine to the excavator's operating systems.

**Undercarriage:** This section covers the tracks, rollers, sprockets, and other components that support and move the excavator.

**Air System:** This section focuses on the air compressor, air filters, and other components associated with the air system.

**Hydraulic System:** This section provides comprehensive information on the hydraulic pumps, valves, cylinders, and other components responsible for the excavator's operation.

**Electric and Electronic System:** This section covers the electrical wiring, sensors, control modules, and other components that make up the excavator's electrical system.

The manual is filled with detailed diagrams, illustrations, and technical specifications, making it easy to understand and follow the procedures. You can use this manual to diagnose problems, troubleshoot issues, and perform repairs, saving you time and money.

The Komatsu PC650-3, PC650LC-3, and PC650SE-3 are heavy-duty hydraulic excavators designed for large-scale excavation and material handling projects. These machines are known for their robust construction, powerful performance, and efficient operation. The PC650-3 series boasts a powerful Komatsu SAA6D140E-3 engine, delivering high torque and horsepower for demanding applications. With a standard operating weight ranging from 60,700 to 65,000 kg depending on configuration, these excavators are capable of handling heavy loads and excavating large volumes of material. The PC650LC-3 model specifically features a long undercarriage for increased stability and reach, making it ideal for projects requiring extended working distances. The PC650SE-3 model, on the other hand, is equipped with a special boom design for enhanced reach and lifting capacity, well-suited for applications requiring precise material handling.

Beyond their powerful engines and impressive lifting capacity, the Komatsu PC650-3 series is engineered for operator comfort and ease of use. The spacious and ergonomic cab provides a comfortable working environment, equipped with intuitive controls and a comprehensive instrument panel for monitoring machine performance and operational parameters. The excavators also feature advanced hydraulic systems that deliver smooth and precise movements, minimizing operator fatigue and maximizing productivity. The Komatsu PC650-3, PC650LC-3, and PC650SE-3 are renowned for their reliability and durability, making them a popular choice for contractors and operators in various industries, including mining, construction, quarrying, and infrastructure development. Their impressive performance, versatile configurations, and operator-centric design contribute to their success in demanding applications, making them an indispensable asset for large-scale projects.