This manual covers the Zaxis ZX 110-3, 110M-3, 120-3, 130K-3, 130L-3, 135US-3, 135USK-3, and 135USL-3 excavators, essential heavy equipment designed for construction and earthmoving applications. These machines are recognized for their robust engineering and reliability, providing powerful performance for a wide range of demanding tasks. This comprehensive service repair manual is your primary resource for understanding and maintaining these advanced excavators, ensuring their optimal operation and longevity in the field. This English-language service repair manual provides detailed, step-by-step instructions for all maintenance and repair procedures. It covers critical areas including general information, safety guidelines, and in-depth technical details on the upperstructure, undercarriage, and front attachments. Additionally, the manual includes explanations of operational principles, system overviews, component operation, performance testing, and troubleshooting guidance. With features like zoom functionality for enhanced clarity and parts correspondence with printed page numbers, this manual is an indispensable tool for owners, mechanics, and technicians seeking to effectively maintain and repair their excavators.