The Volvo L90C Series wheel loader is a robust and reliable machine engineered for demanding work environments. Featuring a powerful Volvo TD61 diesel engine with a displacement of 5.5 liters, it delivers 106 kW (142 hp) and 540 Nm of torque, ensuring efficient operation for a variety of tasks. Its design prioritizes durability and performance, with a substantial operating weight of 10200 kg and a rated operating capacity of 5500 kg. The L90C is equipped with an Automatic Powershift transmission offering 4 forward and 4 reverse gears, along with heavy-duty planetary hub reduction drive axles and articulated power steering for optimal maneuverability. This service manual provides comprehensive guidance for the maintenance and repair of the Volvo L90C wheel loader. It covers essential information including detailed technical specifications, fluid capacities for the engine, hydraulic system, transmission, and coolant, as well as recommended service intervals for oil changes and filter replacements. Owners, technicians, and mechanics will find detailed procedures for troubleshooting, diagnostics, and repair, ensuring the continued optimal performance and longevity of the equipment. The manual is presented in English and is designed to be a complete resource for all service-related needs.