This manual covers the Allis Chalmers 190 and 190XT tractor models, designed for a range of agricultural and industrial applications. These tractors are known for their robust construction and reliable diesel engines, featuring displacements of 6.3L or 6.4L and approximately 73 PTO horsepower. The transmission typically offers 12 forward and 4 reverse gears, supported by a heavy-duty drivetrain and a wet disc brake system for dependable operation. The engineering quality of these machines ensures durability and efficiency for demanding tasks. This Service Repair Workshop Manual provides comprehensive guidance for maintaining and repairing your Allis Chalmers 190 / 190XT. It includes detailed step-by-step instructions, diagrams, illustrations, and wiring schematics covering all major systems, including the diesel engine, manual transmission, hydraulics, and electrical components. This manual is an essential resource for owners, mechanics, and technicians, offering the technical specifications and procedures necessary to ensure the optimal performance and longevity of the tractor.