This comprehensive service repair manual provides in-depth instructions and guidance for maintaining and repairing your Allis Chalmers Tractor Model D-21, D-21 Series II, 210, and 220. It covers a wide range of topics, including engine, transmission, hydraulics, electrical system, and more. With detailed step-by-step instructions, clear illustrations, and wiring diagrams, this manual empowers you to tackle any repair job with confidence.

The manual includes information on all routine maintenance procedures, allowing you to keep your tractor running smoothly and efficiently. This resource is designed for individuals who want to save money on repair costs by performing their own repairs. With easy-to-follow instructions and clear diagrams, this manual makes even the most complex tasks manageable. You can confidently diagnose and resolve issues, ensuring your tractor operates at peak performance.

The Allis-Chalmers Model D-21 series II 210 220 WSM tractor, a stalwart of the agricultural industry, represented a significant advancement in power and versatility for farmers in the mid-20th century. Introduced as a successor to the original D-21 model, this series II iteration boasts substantial improvements, notably in its engine and transmission. The heart of this tractor is a powerful 4-cylinder, 210 cubic inch (3.4 liter) gasoline engine, generating 40 horsepower and delivering ample torque for demanding tasks. The D-21 series II also featured a robust 4-speed transmission with a single-speed rear end, providing a range of gear ratios to match varied farming operations. The introduction of the "WSM" (Wide Special Model) designation on this variant signified its enhanced capabilities with a wider wheelbase and wider tread, providing greater stability and traction for hauling heavy loads.

Beyond its impressive power and durability, the D-21 series II 210 220 WSM incorporated notable refinements for operator comfort and efficiency. The inclusion of a hydraulic system allowed for the attachment of implements, streamlining farm tasks like plowing, cultivating, and harvesting. The operator's platform featured a comfortable seat and intuitive controls, facilitating long hours of operation. The D-21 series II 210 220 WSM, often referred to as the "D-21 series II," cemented its place as a reliable and powerful workhorse in the agricultural landscape. It was a testament to Allis-Chalmers' commitment to innovation and quality, providing farmers with a tool that could navigate diverse farm challenges efficiently and effectively. While this model is no longer in production, its legacy lives on in the hearts of farmers who remember its unwavering work ethic and enduring contributions to the agricultural world.