This comprehensive workshop service and repair manual is your essential guide for maintaining and repairing FIAT 480, 500, 540, 580, 640, and 680 DT tractors. It offers detailed instructions and illustrations covering a wide range of components and systems, ensuring you have the knowledge and resources to tackle any repair job. The manual includes detailed procedures with step-by-step instructions accompanied by clear pictures and diagrams for every aspect of your tractor, from engine removal and installation to the intricate workings of the hydraulic lift unit and electrical system. You will find comprehensive coverage of the following: * **Engine:** Thorough guidance on the 2750 cc 3-cylinder, 4-stroke diesel engine (for 580-580 DT), the 3456 cc 4-cylinder, 4-stroke diesel engine (for 680-680 DT and model 640), and the 2592 cc 3-cylinder, 4-stroke diesel engine (for models 480 and 500). This includes detailed sections on crankcase, cylinder head, valves, timing mechanism, crank gear assembly, fuel system, fuel tank & pump, injection system, lubrication system, and cooling system. * **Powertrain:** Explore the intricacies of the transmission, bevel gear system, differential, brake system, final drive, rear wheel, front axle & steering, and clutch system. * **Hydraulics:** Understand the operation and maintenance of the hydraulic lift unit and PTO-belt pulley. * **Electrical System:** Gain valuable insights into the charging system, battery system, starting motor, accessory equipment, light-switch-fuse, and troubleshooting. * **Wiring Diagram:** A comprehensive wiring diagram is included for easy reference. With its detailed illustrations and clear explanations, this manual equips you with the tools and knowledge necessary to confidently perform maintenance and repairs on your FIAT DT tractor.

The FIAT 480, 500, 540, 580, 640, and 680 DT tractors were a range of agricultural workhorses produced by FIAT, designed to handle a wide variety of tasks on farms and ranches. These models were known for their durability, reliability, and powerful performance, making them popular choices for farmers worldwide. The tractors were equipped with a range of engine options, with the smaller 480 and 500 models using a 3-cylinder 2592cc diesel engine, and the larger 580, 640, and 680 models featuring a 4-cylinder 3456cc diesel unit. The 540 model also benefitted from a 3-cylinder diesel engine, but with a larger 2592cc displacement. These engines provided ample power to handle heavy loads, while the tractors' robust construction ensured they could withstand the rigors of agricultural work. The FIAT 480, 500, 540, 580, 640, and 680 DT tractors were equipped with a variety of features designed to enhance their versatility and ease of use. This included a hydraulic lift system for attaching and operating a wide range of implements, a PTO (Power Take-Off) system for powering auxiliary equipment, and a robust transmission system for smooth and efficient operation. The tractors also featured a comprehensive electrical system for powering lights, gauges, and other accessories. The FIAT DT models offered a comfortable operator environment for long days in the field, with a well-designed cab and controls for maximum operator comfort and efficiency. These features combined to make the FIAT 480, 500, 540, 580, 640, and 680 DT tractors a valuable asset for any farmer or rancher, capable of tackling a wide range of tasks with reliability and efficiency.