This manual covers the Allis-Chalmers 21-C Crawler Loader, a robust piece of equipment designed for demanding tasks. While specific production years are not detailed, the 21-C Series is known for its durable construction and reliable performance, making it a valuable asset for construction, material handling, and other heavy-duty applications. Its tracked design provides excellent traction and stability on varied terrain, complemented by a diesel engine and a manual transmission with power shuttle for efficient operation.

This Parts Manual provides comprehensive information essential for identifying and ordering components for your Allis-Chalmers 21-C Crawler Loader. It is intended to assist owners, operators, and maintenance personnel in understanding the machine's assembly and ensuring its continued functionality. The manual details various systems, including the engine, transmission, and loader components, facilitating accurate part selection for repairs and replacements.