This comprehensive Service Repair Manual is specifically designed for the Komatsu WA320-5H Wheel Loader, covering serial numbers H50051 and up. It provides in-depth information on maintaining, assembling, disassembling, and servicing your Komatsu WA320-5H Wheel Loader, ensuring you have the knowledge to keep your machine running smoothly.

The manual delves into the specifics of the WA320-5H, which is equipped with the SAA6D102E-2-A engine. While the manual itself covers the WA320-5H in detail, it recommends referring to the 102 Series Engine Shop Manual for comprehensive information on the engine.

The content is organized into sections for easy navigation, providing information on various aspects of the machine. General information sets the stage, followed by sections dedicated to the structure, function, and maintenance standards of the WA320-5H. Testing and adjustment procedures are outlined in detail, accompanied by clear diagrams and illustrations for easy understanding. The manual then guides you through the disassembly and assembly processes, ensuring you can handle repairs with confidence. Finally, additional information is provided in the "Others" section, covering miscellaneous topics related to the WA320-5H.

This manual offers a wealth of information, helping you diagnose issues, understand repair procedures, and perform routine maintenance effectively. With detailed specifications, diagrams, and real-life photographs, you can confidently tackle any repair or maintenance task. The manual is structured in a way that makes it easy to find the information you need, enabling you to save time and money by conducting repairs yourself.

The Komatsu WA320-5H Wheel Loader is a powerful and versatile machine designed for heavy-duty material handling applications. With a robust build and advanced technology, the WA320-5H is a reliable choice for a wide range of industries, including construction, mining, quarrying, and waste management. This model features a powerful Komatsu SAA6D107E-2 engine, boasting a net power output of 160 kW (215 hp) at 1,800 rpm. This engine, coupled with a responsive hydraulic system, delivers efficient operation and impressive lifting capacity. The WA320-5H boasts a maximum operating weight of 23,400 kg (51,600 lbs) and has a maximum payload capacity of 10,000 kg (22,000 lbs). Its impressive lifting capacity and high dumping height make it ideal for loading and unloading trucks, transporting materials across construction sites, and handling heavy loads with ease.


The Komatsu WA320-5H is equipped with a range of features that enhance operator comfort and control, including a spacious and ergonomically designed cab providing excellent visibility and a comfortable working environment. The machine's advanced control systems allow for precise operation, while its robust construction ensures durability and reliability even in demanding working conditions. The WA320-5H is also designed with safety features in mind, incorporating features like a ROPS/FOPS certified cab and advanced safety systems to ensure operator protection. This machine is designed to minimize maintenance requirements and maximize uptime, offering long-term value and efficiency. The Komatsu WA320-5H's combination of power, performance, and reliability makes it a top choice for businesses seeking a dependable and efficient wheel loader.