This service manual covers the Liebherr TL435-10, TL445-10, TL435-13, and TL442-13 Telescopic Handlers. These machines are engineered for demanding operational environments, offering robust performance and reliability. This manual provides comprehensive details to ensure these telescopic handlers maintain their peak operational efficiency and longevity. This document serves as an exhaustive guide for maintaining and repairing your Liebherr telescopic handler. It includes detailed instructions, illustrations, and technical data covering all major systems, from the engine and hydraulics to the electrical system and operator cab. Whether you are a do-it-yourself enthusiast or a professional technician, this manual offers the necessary information for accurate diagnostics, effective repairs, and routine maintenance, ensuring your equipment operates safely and efficiently.