This comprehensive Allis Chalmers AC 616, 620 and 720 Tractor Service and Repair Manual provides detailed instructions and specifications for servicing and repairing your tractor. It is an invaluable resource for any owner or mechanic who wants to perform maintenance or repairs on these models. The manual includes step-by-step procedures, detailed illustrations, exploded diagrams, drawings, and photos to guide you through every repair process. The content is organized into clearly defined chapters, allowing you to quickly find the information you need. You can easily search by keyword or jump directly to the relevant chapter using the bookmark feature. The manual covers a wide range of topics, including: * **General Information**: This section provides essential information about the tractor, including battery care, bearing cleaning and inspection, transmission fluid and filter maintenance, brake adjustment, clutch pedal free travel adjustment, and clutch belt tension. * **Tractor Repair**: This section delves into the specifics of repairing various tractor components, including the engine, wheels and drop housings, brakes, power train system, clutch, drive shaft, transmission, differential, rear PTO, final drive, steering and front axle assemblies, power lift system, electrical system, charging circuit, ignition circuit, starting circuit, lights and hourmeter circuit, pressure and temperature sending unit circuit, PTO circuit, removal and installation of electrical components, troubleshooting guide, specifications, fuel system, in-line hydrostatic unit. This manual is designed to help you diagnose problems, perform routine maintenance, and complete complex repairs. Whether you're a seasoned mechanic or a DIY enthusiast, this manual will equip you with the information needed to keep your Allis Chalmers tractor running smoothly.

The Allis-Chalmers AC 616, 620, and 720 tractors represent a line of versatile and powerful agricultural machines produced by Allis-Chalmers, a prominent American manufacturer of farm equipment. These tractors, introduced in the 1960s, were designed to handle a wide array of tasks on farms and ranches, from plowing and cultivating to hauling and operating implements. Each model offered a unique combination of power and features, catering to specific needs. The AC 616, with its 60 horsepower engine, was ideal for smaller farms or those requiring a more maneuverable tractor. The AC 620, boasting 70 horsepower, provided more power for larger operations, while the AC 720, powered by a robust 85 horsepower engine, was designed for heavy-duty tasks and demanding conditions. These tractors were known for their durability, reliability, and user-friendly design, making them popular choices among farmers and ranchers seeking dependable workhorses. The Allis-Chalmers AC 616, 620, and 720 tractors featured a range of innovative features, emphasizing accessibility and ease of use. The tractors were equipped with comfortable operator stations, offering good visibility and convenient controls for operating implements and adjusting settings. The engines, known for their efficiency and fuel economy, were coupled with robust transmissions, providing smooth power delivery and efficient operation. These tractors also incorporated advanced hydraulic systems for powering implements and providing lifting capabilities. The AC 616, 620, and 720 tractors were designed to meet the demands of modern agriculture, offering a blend of power, efficiency, and user-friendliness that contributed to their popularity among farmers and ranchers during their production period.