This workshop service repair manual covers Hitachi Zaxis excavators, including the ZX 110-3, 110M-3, 120-3, 130K-3, 130L-3, 135US-3, 135USK-3, and 135USL-3 models. These excavators are designed for heavy construction equipment applications, representing robust engineering and reliability for demanding tasks. This manual provides comprehensive information to ensure optimal performance and longevity of your Hitachi Zaxis equipment. The purpose of this English-language manual is to provide detailed guidance for the service and repair of these excavators. It encompasses all A-Z repair and service procedures, presented with easy-to-follow, step-by-step instructions and accompanying pictures. Coverage includes engine specifications, transmission details, and all essential maintenance and troubleshooting information, empowering owners, mechanics, and technicians to effectively maintain and repair their equipment.