Free Equipment Data for your Allis Chalmers | Agco Allis 4660. Where possible we provide useful information such as horse power, serial numbers, build years and more. Most of this information can be found in the Operator's manual for the Allis Chalmers | Agco Allis 4660, but you are best served by getting all the manuals (Service, Parts, and Operators). Be sure to check out any parts and manuals available or contact us here.