The Komatsu PC78MR-6 Hydraulic Excavator Service Repair Manual and Operation & Maintenance Manual provides comprehensive guidance for maintaining, assembling, disassembling, and servicing your Komatsu PC78MR-6 Hydraulic Excavator. This manual is designed to help you achieve peak performance through effective, economical, and safe machine operation and maintenance, enabling you to perform repairs yourself and save money.

The Service Repair Manual contains detailed information and data specific to the PC78MR-6 model, including specifications, diagrams, real-life photo illustrations, and schematics. It guides you through step-by-step procedures for repair, diagnostics, servicing, technical maintenance, and troubleshooting. This manual offers a complete understanding of your machine's workings, allowing you to identify issues and effectively repair and maintain it without relying on external service.

The Operation & Maintenance Manual covers procedures for operation, handling, lubrication, maintenance, checking, and adjustment. It is a valuable resource for both operators and maintenance personnel, ensuring efficient, cost-effective, and safe machine operation and maintenance.

The manual's content includes:

**Service Repair Manual:**
* General information
* Structure, function, and maintenance standards
* Testing and adjusting
* Disassembly and assembly
* Additional information

**Operation & Maintenance Manual:**
* Foreword
* Safety information
* Introduction
* Product information
* Safety guidelines
* Machine view illustrations
* Detailed control and gauges
* Machine operations and controls
* Transportation
* Cold weather operation
* Long-term storage
* Troubleshooting and actions
* Maintenance information
* Outline of service
* Wear parts
* Recommended fuel, coolant, and lubricant
* Tightening torque specifications
* Safety critical parts
* Maintenance schedule
* Maintenance procedures
* Specifications
* Attachments and options
* Attachment guide
* Recommended attachment operations
* Index

This manual provides comprehensive and detailed information, empowering you to confidently maintain and repair your Komatsu PC78MR-6 Hydraulic Excavator efficiently and cost-effectively.

The Komatsu PC78MR-6 hydraulic excavator is a versatile and robust machine designed for a wide range of applications, including construction, demolition, and material handling. This model features a powerful Komatsu SAA4D84E-2 engine, delivering exceptional performance and fuel efficiency. The PC78MR-6 boasts a maximum digging force of 63.8 kN and a maximum lifting capacity of 4,200 kg, enabling it to tackle demanding tasks with ease. The machine's compact design allows for maneuverability in tight spaces, while its advanced hydraulic system ensures smooth operation and precise control. The PC78MR-6 also benefits from a comfortable operator cab that offers excellent visibility and ergonomic controls, enhancing operator productivity and comfort.

Komatsu has prioritized safety and reliability in the PC78MR-6. The machine features multiple safety features, including an emergency stop switch, a load-sensing system, and a robust undercarriage. The excavator is known for its durability and long service life, thanks to its high-quality materials and robust construction. Regular maintenance and adherence to the provided service and operation manuals are crucial for ensuring optimal performance and extending the machine's lifespan. The PC78MR-6 is a reliable and efficient excavator that can effectively meet the needs of demanding construction and industrial applications. Its compact size, powerful engine, durable construction, and safety features make it a popular choice for professionals who require a high-performance and reliable machine for their projects.