This comprehensive manual provides essential information for maintaining and operating Komatsu PC400LC-6LM and PC400HD-6LM hydraulic excavators. It includes two distinct sections: a detailed Service Repair Manual and a thorough Operation & Maintenance Manual. The Service Repair Manual offers comprehensive guidance on troubleshooting, diagnosing, and repairing various components of the excavator. It features detailed diagrams, exploded views, and step-by-step instructions for dismantling, assembling, and adjusting components. The Operation & Maintenance Manual provides a wealth of information on safe and efficient operation, regular maintenance schedules, lubrication procedures, and recommended parts and fluids. This manual is an invaluable resource for experienced technicians, operators, and anyone seeking in-depth knowledge about these powerful excavators.

The Komatsu PC400LC-6LM and PC400HD-6LM are powerful hydraulic excavators designed for heavy-duty construction and earthmoving operations. These machines are part of Komatsu's renowned PC400 series, known for their reliability, durability, and advanced technological features. The PC400LC-6LM is the standard model, while the PC400HD-6LM is a high-density version specifically built for demanding applications requiring increased digging force and stability. Both models boast a robust construction, featuring a powerful Komatsu SAA6D170E-6 engine with a net power output of 257 kW (345 hp) and a massive operating weight exceeding 45 tons. This enables them to handle challenging tasks such as excavation, loading, demolition, and material handling with ease.

The PC400LC-6LM and PC400HD-6LM are equipped with advanced hydraulic systems that deliver precise control and exceptional digging performance. The Komatsu hydraulics ensure smooth and efficient operation, while the robust undercarriage provides stability and maneuverability in various terrains. These excavators also incorporate numerous safety features, including a ROPS/FOPS certified cab, emergency stop systems, and a comprehensive warning system. Furthermore, the machines are designed for operator comfort and ease of operation, featuring a spacious and ergonomically designed cab with intuitive controls, a large viewing area, and a climate-controlled environment. The combination of power, performance, and user-friendliness makes the Komatsu PC400LC-6LM and PC400HD-6LM indispensable tools for construction professionals seeking high productivity and reliability in heavy-duty applications.