The Allis Chalmers Model One-Ninety 190 & 190 XT Series III Gas & Diesel Tractors Serial number 23001 & Up Parts Catalog manual contains a complete list of parts for your tractor it is a reproduction of an orginal manual and is also an excellent source of information for reassembling your tractor. The Allis Chalmers parts catalog shows the tractor owner / operator;
The are parts grouped according to the location on the tractor.
Each group shows an "exploded view" which clearly illustrates each part in its correct relation to other parts in the illustration.
You need a parts catalog, it saves you time, money and helps you seem more informed when ordering parts
Also consider purchasing both the operators and service manual for your tractor, if available. The operator's manual adds all the basic information meant for the end user of the machine, while the service manual will lay out all the procedures for you.