This comprehensive service manual covers the Liebherr TL 435-10, TL 445-10, TL 435-13, and TL 442-13 Telescopic Handlers, specifically for units with F/N xxx-6000 and up. These machines are engineered for demanding operational environments, offering robust performance and reliability. This manual is designed to assist users of all skill levels, from novice owners to professional technicians, in understanding and maintaining these powerful pieces of equipment. The purpose of this manual is to provide all necessary information for correct operation and maintenance. It details critical areas including general information, tools and work instructions, technical data, engine specifications, and detailed guidance on hydraulic systems, electrical diagrams, and components. Furthermore, it covers essential maintenance for the main frame, operator cab, telescopic boom, and working attachments, ensuring the longevity and optimal performance of your Liebherr telescopic handler.