This comprehensive manual provides a complete guide to maintaining, assembling, disassembling, and servicing your Komatsu PC300-6, PC300LC-6, PC350-6, and PC350LC-6 hydraulic excavators. It covers a wide range of topics to help you achieve peak performance through effective, economical, and safe machine operation and maintenance. This manual is designed for both operators and maintenance personnel, providing detailed instructions and diagrams to ensure successful repairs and maintenance procedures.

The **Service Repair Manual** section contains detailed information and data specific to these models. You will find detailed specifications, diagrams, and real-life photo illustrations to guide you through every repair, servicing, and troubleshooting procedure. This manual provides step-by-step instructions to empower you to identify issues and understand how to repair and maintain your machine without relying on external service.

The **Operation & Maintenance Manual** section focuses on procedures for operation, handling, lubrication, maintenance, checking, and adjustment. It emphasizes achieving peak performance through effective and safe operation. This section outlines general precautions, operation procedures, transportation guidelines, cold weather operation tips, long-term storage instructions, troubleshooting guidance, and a comprehensive maintenance schedule.

The manual also covers various attachments and options, including guidance on handling buckets with hooks, using seat belts, operating the car heater, and ensuring machine readiness for attachments. Detailed information is provided on extending machine service life and understanding the auto-greasing system.

This manual is a valuable resource for anyone looking to maximize the efficiency and longevity of their Komatsu PC300-6, PC300LC-6, PC350-6, and PC350LC-6 hydraulic excavators.

The Komatsu PC300-6, PC300LC-6, PC350-6, and PC350LC-6 hydraulic excavators represent a high-performance, reliable, and versatile line of heavy machinery designed for a wide range of demanding construction, mining, and earthmoving applications. These excavators, known for their robust build and advanced features, are popular choices in industries requiring efficient excavation, lifting, and material handling capabilities. The PC300-6 and PC350-6 models are standard configurations, while the PC300LC-6 and PC350LC-6 models are long-reach versions, offering extended digging depths and working radii, ideal for specific tasks like trenching or working in confined spaces.

Komatsu's engineering prowess shines through in these excavators, with features like powerful hydraulic systems for smooth and precise operation, durable and efficient engines to deliver impressive power and fuel economy, and ergonomically designed cabs to enhance operator comfort and productivity. The excavators are equipped with intelligent controls and advanced safety features like overload protection systems and emergency shut-off mechanisms, making them user-friendly and safe for operators. The inclusion of a service repair manual and an operation & maintenance manual alongside the excavator underscores Komatsu's commitment to user support, providing detailed instructions and technical information for proper maintenance, troubleshooting, and repair, contributing to extended operational life and optimal performance.