This service repair manual covers Liebherr telescopic handlers, specifically models TL 435-10, TL445-10, TL435-13, and TL442-13, for production years indicated by serial numbers F/N xxx-6000 and up. These machines are engineered for demanding material handling applications, combining robust construction with advanced telescopic boom technology for versatile operation. Liebherr's commitment to quality and reliability ensures these units are suited for a wide range of industrial and construction environments, offering powerful performance and operational efficiency. This comprehensive manual provides detailed maintenance and repair procedures essential for the upkeep of your Liebherr telescopic handler. It encompasses a broad spectrum of technical information, including general specifications, tools and work instructions, engine and hydraulic system diagnostics, electrical system diagrams, and guidance on components such as axles, the telescopic boom, and working attachments. The manual is designed to assist owners, technicians, and mechanics in performing routine maintenance, troubleshooting issues, and ensuring the longevity and optimal performance of their equipment.