This comprehensive workshop service repair manual provides detailed instructions for servicing, repairing, and maintaining your Sisu 320/420/620/634 Series Diesel Engine. The manual offers step-by-step procedures, clear illustrations, and exploded diagrams to guide you through every aspect of the repair process. It covers a wide range of topics, including:

* **General Information:** Understand the basics of your engine, its components, and safety precautions.
* **Care and Safety:** Learn essential safety procedures for working on your Sisu diesel engine.
* **Routine Maintenance:** Discover preventative maintenance tasks to keep your engine running smoothly.
* **Systems Description:** Gain a thorough understanding of the engine's various systems, including the fuel, cooling, lubrication, electrical, induction, exhaust, and base engine.
* **Fault Finding:** Learn how to diagnose problems and identify the root cause of engine issues.
* **Test Procedures:** Discover comprehensive test procedures for evaluating the performance and condition of your engine.
* **Fuel System:** Detailed instructions on servicing, repairing, and troubleshooting the fuel system.
* **Cooling System:** Learn about the cooling system, its components, and how to maintain and repair it.
* **Lubrication System:** Explore the lubrication system, its functions, and proper maintenance procedures.
* **Electrical System:** Comprehensive information on the electrical system, troubleshooting, and repair.
* **Induction and Exhaust System:** Guidance on servicing, repairing, and maintaining the induction and exhaust systems.
* **Base Engine:** Detailed instructions on servicing and repairing the core engine components.

Equipped with this manual, you'll have everything you need to understand, maintain, and repair your Sisu 320/420/620/634 Series Diesel Engine, saving you time, money, and ensuring your engine's optimal performance.

The Sisu Service 320/420/620/634 Series Diesel Engine Manual Workshop Service Repair Manual is a comprehensive guide for technicians and mechanics working on Sisu diesel engines from the 320, 420, 620, and 634 series. These engines, manufactured by Sisu Diesel, a Finnish company renowned for its robust and reliable powertrains, are widely used in various applications, including construction equipment, agricultural machinery, and industrial applications. The repair manual provides detailed information on all aspects of these engines, encompassing their design, operation, maintenance, and repair procedures. It covers a wide range of topics, such as engine specifications, component identification, troubleshooting guides, repair procedures, wiring diagrams, and torque specifications.

The Sisu Service manual is an indispensable resource for anyone involved in servicing or repairing these engines. It features clear and concise technical diagrams, illustrations, and step-by-step instructions, making it easy to understand even for less experienced technicians. It also includes valuable safety precautions and warnings to ensure safe and efficient work practices. By providing detailed information on every aspect of the engines, the manual empowers technicians to diagnose and resolve engine issues effectively. It serves as a valuable tool for enhancing technical skills, reducing downtime, and maintaining the optimal performance of Sisu diesel engines.