This comprehensive Allis Chalmers Model D10, D10 Series III, D12, and D12 Series III Tractor Full Service Repair Manual provides everything you need to repair, maintain, rebuild, refurbish, or restore your tractor. It covers all diagnostic and repair procedures in great detail, providing the same information used by professional technicians and mechanics. This manual covers repairs, service schedules, maintenance, wiring diagrams, and diagnostics. The detailed sub steps expand on repair procedure information, while notes, cautions, and warnings highlight critical information. Numbered instructions guide you through every repair procedure step-by-step, with bold figure numbers enabling quick matching of illustrations with instructions. Detailed illustrations, drawings, and photos guide you through each procedure, and enlarged insets allow you to identify and examine parts in detail. A numbered table of contents provides easy access to the information you need. Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use, making it easy to diagnose and repair problems with your machine's electrical system.

The Allis-Chalmers Model D10, D10 Series III, D12, and D12 Series III tractors are a family of powerful crawler tractors that were produced by Allis-Chalmers from the late 1950s to the early 1970s. These tractors were designed for heavy-duty construction, logging, and mining applications. They were known for their robust construction, powerful engines, and impressive traction capabilities. The D10 and D12 models were distinguished by their engine size, with the D10 powered by a 10-cylinder diesel engine and the D12 featuring a 12-cylinder diesel engine. The Series III versions of these models introduced several improvements, including a more powerful engine, an enhanced hydraulic system, and improved operator comfort. The D10 and D12 tractors were equipped with a variety of features that made them well-suited for demanding tasks. These features included a fully articulated frame that allowed the tractors to maneuver effectively in tight spaces, a heavy-duty undercarriage with durable track links, and a powerful hydraulic system that provided ample lifting capacity and control. The tractors were also equipped with a variety of optional attachments, such as rippers, bulldozers, and loaders, which allowed them to perform a wide range of tasks. The Allis-Chalmers D10 and D12 tractors have earned a reputation for their reliability, durability, and power, making them highly sought-after machines in the used equipment market. Even though production of these models ceased decades ago, their robust construction and impressive performance have ensured that they remain relevant in today's construction and industrial sectors.