This comprehensive Service Repair Manual provides in-depth information for maintaining, assembling, disassembling, and servicing your Komatsu PC10-7, PC15-3, and PC20-7 Hydraulic Excavators. Covering machines with serial numbers PC10-7 - 25001 and up, PC15-3 - 5001 and up, and PC20-7 - 35001 and up, this manual offers detailed instructions and specifications for a wide range of tasks.

The manual includes information on the 3D78N-1B engine used in the PC10-7, and the 3D84N-2K and 3D84N-2H engines used in the PC15-3 and PC20-7 respectively. You'll find clear diagrams, real-life photo illustrations, and comprehensive schemes to guide you through every step of the repair, diagnosing, servicing, technical maintenance, and troubleshooting processes. This manual empowers you to confidently tackle various repair tasks and understand the complexities of your machine, saving you both time and money.

The Service Repair Manual is organized into four main sections:

**10 Structure and Function:** This section provides a detailed understanding of the excavator's components and how they function together.

**20 Testing and Adjusting:** This section outlines the procedures for testing various systems and components, and making necessary adjustments.

**30 Disassembly and Assembly:** This section provides step-by-step instructions for disassembling and reassembling different parts of the excavator.

**40 Maintenance Standard:** This section outlines the recommended maintenance schedule and procedures for keeping your excavator in optimal condition.

With its comprehensive coverage, clear explanations, and detailed illustrations, this Service Repair Manual is an invaluable resource for anyone who owns or maintains a Komatsu PC10-7, PC15-3, or PC20-7 Hydraulic Excavator.

The Komatsu PC10-7, PC15-3, and PC20-7 are compact hydraulic excavators designed for a variety of tasks in tight spaces. These models are popular choices for landscaping, construction, and utility work, offering versatility and maneuverability. The PC10-7 is the smallest of the three, boasting a compact size and efficient engine, making it ideal for tight spaces and delicate tasks. The PC15-3 provides a balance of power and maneuverability, suitable for a broader range of projects. The PC20-7, the largest of the trio, offers increased digging force and lifting capacity, making it capable of handling heavier loads and more demanding tasks. All three models share a common design philosophy, emphasizing durability, reliability, and ease of maintenance. They feature robust construction, high-quality components, and intuitive controls, making them user-friendly and efficient.

These excavators are powered by fuel-efficient diesel engines, providing ample power for various applications. The hydraulic system is designed for smooth and precise operation, allowing for controlled movements and optimal performance. The operator cab provides a comfortable and ergonomic environment, with clear visibility and intuitive controls. The compact design allows for easy transportation and maneuverability in confined areas. The PC10-7, PC15-3, and PC20-7 are equipped with a range of attachments, including buckets, breakers, and augers, enhancing their versatility and adapting them to a wide range of tasks. Regular maintenance and proper operation ensure these excavators remain reliable and productive over their service life.