The DOOSAN DX420LC Track Excavator Workshop Service Repair Manual provides a comprehensive guide for maintenance, repair, and servicing of the DX420LC track excavator. This manual covers a wide range of topics and systems, providing detailed instructions and illustrations to assist in understanding and performing various tasks. The manual includes general information, safety procedures, and detailed specifications for the DX420LC model. You will find instructions on utilizing special tools as well as standard torque values for various components. The manual provides thorough maintenance procedures, covering routine checks and preventative maintenance tasks. Within the manual, you can find detailed information on the DV11 diesel engine, including diagnostics, disassembly, reassembly, and troubleshooting. The manual includes sections dedicated to the lubrication system, fuel system, cooling system, air cleaner system, intercooler system, fuel injection, battery system, air removal of the fuel system, turbocharger system, starting motor system, and tuning procedures for the engine. The manual also covers machine operation, including component locations, cabin, counterweight, fuel tank and fuel transfer pump, swing bearing system, lower structure and chassis, swing reduction gearbox, track shoes and links, idler roller, lower roller and upper roller, track spring and adjusting cylinder, air-conditioning system, refrigerant system, drive coupling system, hydraulic system, accumulator system, center joint (swivel), cylinders and swing motor, travel motor (with gearbox), main pump (Rexroth), control valve system, pilot control valve (work lever/joystick), travel control valve (with damper), electrical system, electric supply system, engine stop system, starting and charging system, monitoring system, hydraulic breaker system, graphic information area display, electronic hydraulic control system (E-EPOS), power mode control system, trenching mode control system, engine control system, automatic deceleration control (auto idle control), power boost mode system, automatic travel speed control, engine control device adjustment, self-diagnostic function, engine throttle controller, wiper system, lighting system, overload warning device, boom, arm and bucket system, instrument panel, transportation system, troubleshooting guide, hydraulic schematic diagrams, and electrical schematic diagrams. This manual serves as a valuable resource for professional mechanics, technicians, and DIY enthusiasts seeking to repair, service, and maintain their DOOSAN DX420LC track excavator. The manual's detailed instructions, diagrams, and comprehensive coverage make it an essential tool for any owner or operator of this model.

The DOOSAN DX420LC Track Excavator is a powerful and versatile machine designed for heavy-duty construction and earthmoving operations. This model, previously known as the DAEWOO DX420LC, boasts a robust build, advanced technology, and impressive performance capabilities. Powered by a powerful engine, the DX420LC delivers exceptional digging force and lifting capacity, making it ideal for demanding tasks like excavation, loading, and material handling. Its long reach and generous operating radius allow for efficient work in confined spaces, while its advanced hydraulic system ensures smooth and precise control. The DX420LC features a spacious and comfortable cab designed to enhance operator productivity and minimize fatigue during long shifts. The intuitive controls and ergonomic design contribute to operator comfort and safety, while the comprehensive visibility enhances situational awareness and minimizes potential hazards. For efficient maintenance and repairs, the DOOSAN DX420LC Track Excavator Workshop Service Repair Manual is an indispensable resource. This detailed manual provides comprehensive information on every aspect of the machine, from its mechanical and electrical systems to its hydraulic components and safety features. The manual includes detailed diagrams, step-by-step instructions, and troubleshooting guides, making it an invaluable tool for skilled technicians and mechanics. Whether it's routine maintenance, troubleshooting technical issues, or undertaking major repairs, the DX420LC Workshop Service Repair Manual empowers technicians to diagnose and resolve problems efficiently and accurately, ensuring optimal performance and longevity of the machine. This resource is critical for maintaining the DX420LC's functionality and minimizing downtime, thereby maximizing its economic value and contributing to successful construction and earthmoving projects.