This comprehensive service repair manual is designed for the Komatsu PC228US-3 and PC228USLC-3 hydraulic excavators, covering serial numbers 20001 and up. It offers in-depth information on maintaining, assembling, disassembling, and servicing your Komatsu excavator. The manual provides detailed specifications, diagrams, and real-photo illustrations, guiding you through step-by-step repair procedures. It covers comprehensive diagnostic, servicing, technical maintenance, and troubleshooting instructions to ensure you can handle repairs and maintenance effectively. This manual empowers you to tackle repairs and understand the intricacies of your machine, ultimately saving you both time and money. The manual is structured to cover the following key areas: * **General information** outlining fundamental concepts and procedures. * **Structure, function, and maintenance standards**, providing a detailed understanding of the excavator's design and maintenance requirements. * **Testing and adjusting** sections, offering a comprehensive guide for performing inspections and adjustments. * **Disassembly and assembly** sections, providing detailed instructions for dismantling and reassembling components. * **Other** sections covering essential information beyond the core areas. The manual includes information on the SAA6D102E engine, which is mounted on the PC228US-3 and PC228USLC-3 models. However, for detailed engine information, refer to the separate 102 Series Engine Shop Manual. This service repair manual is your ultimate resource for maintaining and repairing your Komatsu PC228US-3 and PC228USLC-3 hydraulic excavators, ensuring optimal performance and longevity.

The Komatsu PC228US-3 and PC228USLC-3 hydraulic excavators are robust and versatile machines designed for a wide range of construction and earthmoving applications. These models, manufactured by Komatsu, a leading global construction equipment brand, are known for their reliability, durability, and operator comfort. Both models are powered by a powerful Komatsu SAA4D107E-2 engine, providing ample power for demanding tasks. The PC228US-3 is a standard configuration excavator, while the PC228USLC-3 features a long undercarriage, making it ideal for working in confined spaces and on uneven terrain. The PC228US-3 and PC228USLC-3 excavators boast a range of features designed to enhance productivity and efficiency. These include an advanced hydraulic system with variable displacement pumps, a powerful boom and arm structure, and a spacious and ergonomically designed cab. The excavators are equipped with a variety of attachments, such as buckets, breakers, and grapples, allowing for diverse operations. The PC228US-3 and PC228USLC-3 are designed for ease of maintenance, with easily accessible service points and a comprehensive diagnostic system. Komatsu prioritizes safety, integrating features like a ROPS/FOPS certified cab and advanced safety systems to ensure operator well-being.