This manual covers the DANA 745-110 steering axle, a critical component for Fendt 815 Vario, 817 Vario, and 818 Vario tractors produced from approximately 2002 onwards. These high-horsepower, premium agricultural tractors are renowned for their advanced Vario continuously variable transmission, robust engineering, and suitability for demanding professional agricultural operations. The DANA 745-110 axle is a key element in their performance, designed for heavy-duty applications and contributing to the exceptional maneuverability and stability characteristic of Fendt machinery. This comprehensive workshop service manual provides detailed information for the maintenance, repair, and overhaul of the steering axle assembly. Coverage includes the planetary reduction gears, steering case, main body, pinion group, differential unit, and associated components, including optional steering sensors. The manual offers step-by-step instructions for disassembly, assembly, maintenance, lubrication, and troubleshooting, along with guidance on special tool usage and critical torque specifications. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of their Fendt tractor's steering system.