The Volvo L150E Wheel Loader, part of the E Series, represents a robust and reliable machine engineered for demanding operational environments. Featuring a powerful Volvo D7E diesel engine with a displacement of 7.1 L, it delivers a maximum power of 160 kW (215 hp) and adheres to Tier 3 / Stage IIIA emission standards. Its design emphasizes durability and efficiency, with a heavy-duty planetary axle system and an Automatic Power Shift transmission offering 4 forward and 4 reverse gears. With an operating weight of 23,000 kg and a rated bucket capacity of 4.0 m³, the L150E is built for substantial material handling tasks, showcasing Volvo's commitment to quality and performance in heavy machinery. This Service Manual provides comprehensive documentation for the Volvo L150E Wheel Loader, serving as an essential resource for owners, mechanics, and technicians. It covers critical aspects of the vehicle, including detailed maintenance procedures for key fluid capacities such as engine oil, hydraulic oil, and coolant. The manual also delves into technical specifications, operational performance data, and safety features like the advanced braking systems. Its purpose is to ensure the proper upkeep, efficient operation, and longevity of the L150E, empowering users with the knowledge necessary for effective maintenance and repair.