This manual covers the Allis Chalmers 640 Tractor Loader and 644 Tractor Forklift, likely produced between the 1970s and early 1980s. These versatile utility tractors were engineered by Allis-Chalmers, a company historically recognized for robust build quality and performance in demanding agricultural and industrial settings. Designed for a range of tasks, these models are equipped to handle material handling with integrated loader or forklift attachments, offering essential functionality for various operational needs. Their durable construction and reliable engineering have made them a lasting presence in their intended fields.

This illustrated parts catalog is an indispensable resource for owners, operators, maintenance personnel, and parts departments. It provides comprehensive coverage of all tractor components and engine parts, including detailed listings of factory-specified part numbers, descriptions, and quantities. The manual facilitates accurate part ordering and replacement, aiding in the maintenance and repair of the engine, drivetrain, hydraulic, chassis, steering, braking, and electrical systems, as well as the loader and forklift attachments. Its organized illustrations and part breakdowns are crucial for identifying and sourcing the correct OEM replacement parts, thereby supporting the longevity and operational efficiency of your Allis Chalmers tractor.