Allis Chalmers HD6

The Allis Chalmers HD6 is an agricultural crawler designed and manufactured by Allis Chalmers. The HD6, produced between 1955 and 1974, played a substantial role in the era's agricultural machinery. It features a robust Allis-Chalmers HD-344 diesel engine with a liquid-cooled, 4-cylinder configuration, displacing 344 cubic inches and with a bore and stroke measuring 4.4375 inches by 5.5626 inches. The tractor comes with different transmission options: a standard sliding gear with 5 forward and 1 reverse gear or a power shift option with 2 forward and 2 reverse gears. With a substantial operating weight of 13,400 pounds, a length of 127 inches, width of 78.5 inches, and a height of 66 inches, it was designed to offer reliable performance in various agricultural applications. Despite its durable build and efficiency, the HD6 remains distinguished by its lack of modern conveniences, including basic amenities like an enclosed cab or advanced hydraulic systems, which were not as commonly found in machines of its time.