The Allis-Chalmers WD45, produced from 1953 to 1959, represents a significant piece of American agricultural machinery heritage. As a successor to the WD model, this tractor was engineered for versatility and durability, making it a popular choice for a wide range of farm tasks. It features a robust Allis-Chalmers 200 cubic inch engine available in gasoline or diesel variants, delivering approximately 45 PTO horsepower. Notable features include a 5-speed manual transmission, with an optional Traction-Booster system for enhanced pulling power. The WD45 is recognized within the vintage agricultural community for its reliability and adaptability, embodying the quality of its manufacturer. This comprehensive service repair manual provides in-depth coverage for all services and repairs, along with routine maintenance for the Allis-Chalmers WD45. It is designed to assist tractor owners, mechanics, and DIY enthusiasts in maintaining and repairing their equipment, enabling self-sufficiency and cost savings. The manual details procedures for engine overhaul, transmission service, electrical system diagnostics, hydraulic system repair, and much more, including specific guidance on fuel and cooling systems, brakes, and steering. With step-by-step instructions, pictures, and wiring diagrams, this English-language manual offers professional-quality information to ensure the longevity and optimal performance of your WD45 tractor.