Allis Chalmers S

The Allis Chalmers Model S is an agricultural crawler tractor that features a robust track chassis design tailored towards demanding farm tasks requiring high traction. Equipped with a 5-speed gear transmission, the tractor provides adequate adjustability for various speeds and terrains, accompanied by modern mechanical injection fuel system for its era and an oil bath air cleaner to maintain cleaner engine intake air. The tractor runs on a sizeable 11.1 L, four-cylinder engine available in both diesel and gasoline variants, supporting a relatively lower engine RPM setting of 1050, which was customary in heavy-duty operations at the time. With a considerable operating weight of 20,100 lbs, the tractor exhibits a stable footprint suitable for a variety of agricultural operations. It's worth noting that while Allis Chalmers manufactured the engine, providing good compatibility between tractor and engine functions, specifics of the engine's valve configuration and induction type remain unknown.