This comprehensive manual provides detailed information for maintaining, assembling, disassembling, and servicing your Komatsu PC650-3, PC650LC-3, and PC650SE-3 hydraulic excavators. It is designed to help you achieve peak performance through effective, economical, and safe operation and maintenance.

The manual is divided into two distinct sections: the Service Repair Manual and the Operation & Maintenance Manual. The Service Repair Manual offers in-depth technical information, including specifications, diagrams, real-life photographs, and illustrations. This section guides you through step-by-step procedures for repairs, servicing, technical maintenance, and troubleshooting. The comprehensive content enables you to identify problems and understand how to repair and maintain your excavator without relying on external service.

The Operation & Maintenance Manual focuses on practical procedures for operating, handling, lubricating, maintaining, checking, and adjusting your excavator. It is an invaluable resource for both operators and maintenance personnel, promoting efficient, economical, and safe operation and maintenance practices.

This manual covers the following:

**Service Repair Manual Contents:**

* **Engine:** Detailed information on the engine covering various aspects like maintenance, repair, and troubleshooting.
* **Power Train:** Comprehensive guidance on the powertrain system, including its components, maintenance, and repair procedures.
* **Undercarriage:** In-depth coverage of the undercarriage system, focusing on maintenance, repair, and troubleshooting.
* **Air System:** Details about the air system, including its components, maintenance, and repair procedures.
* **Hydraulic System:** Comprehensive information on the hydraulic system, including its components, maintenance, and repair procedures.
* **Electric and Electronic System:** Detailed information about the electrical and electronic systems, including their components, maintenance, and repair procedures.

**Operation & Maintenance Manual Contents:**

* **Foreword:** General introduction to the manual and its purpose.
* **Breaking in Your New Machine:** Instructions on how to properly break in your new excavator.
* **Safety Hints:** Essential safety instructions to ensure safe operation and maintenance.
* **General Locations and Specifications:** Overview of key components, their locations, and specifications.
* **Instruments and Controls:** Detailed explanation of the excavator's instruments and controls.
* **Operating the Air Conditioner:** Instructions on how to operate the air conditioner.
* **Using Accumulators:** Information on the proper use and maintenance of accumulators.
* **Using Grease Gun:** Instructions on how to properly use a grease gun for lubrication.
* **Check Before Starting:** Pre-operational checks to ensure the excavator is ready for operation.
* **Operating Your Machine:** Comprehensive instructions on how to safely operate the excavator.
* **Handling of Battery:** Detailed instructions on the safe handling and maintenance of the battery.
* **Transportation:** Guidelines for transporting the excavator.
* **Cold Weather Operation:** Instructions on how to operate the excavator in cold weather conditions.
* **Periodic Maintenance:** Scheduled maintenance tasks and procedures to maintain optimal performance.
* **Adjustment:** Instructions on how to adjust various components of the excavator.
* **Trouble Shooting Guide:** A guide to diagnose and troubleshoot common problems.
* **Storage:** Instructions on how to properly store the excavator.
* **Service Meter:** Information on the service meter and its use.
* **Machine and Engine Serial Numbers:** Location and importance of serial numbers.
* **Fuel, Coolant and Lubricants:** Information on fuel, coolant, and lubricants, including specifications and recommendations.
* **Loading Shovel:** Instructions on how to use the loading shovel.

This manual will help you maintain your Komatsu PC650-3, PC650LC-3, and PC650SE-3 excavators in optimal condition, maximizing their lifespan and performance.

The Komatsu PC650-3, PC650LC-3, and PC650SE-3 are formidable hydraulic excavators designed for heavy-duty construction and mining operations. These machines boast a powerful engine and robust hydraulic system, allowing them to tackle demanding tasks with impressive efficiency. The PC650-3 model is the standard version, while the PC650LC-3 features a long undercarriage for enhanced stability and reach. The PC650SE-3 model, on the other hand, is specially equipped for demolition work, featuring a reinforced boom and a specialized attachment system. Each model is meticulously engineered with a focus on durability, reliability, and operator comfort, making them popular choices among construction professionals.

The Komatsu PC650-3 series excavators are characterized by their impressive power and versatility. They feature a spacious and ergonomic cab, offering the operator a comfortable and safe working environment. The cabin is equipped with a comprehensive array of controls and displays, providing real-time information about the excavator's performance and condition. These machines are also designed with safety in mind, incorporating features like an emergency stop button, a robust ROPS/FOPS structure, and a comprehensive warning system. The PC650-3 series offers a wide range of attachment options, enabling operators to adapt to a variety of tasks, from excavation and loading to demolition and material handling. These excavators are known for their fuel efficiency, thanks to advanced engine management systems and optimized hydraulic components. Their robust construction and comprehensive maintenance features ensure long-term reliability, making them a valuable investment for any construction or mining operation.