This Allis Chalmers Parts Manual covers the following equipment: HD9 Crawler (Diesel) | HD9B Crawler (Diesel) (Short Track) | HD9F Crawler (Diesel) (Long Track) | HD9G Crawler (Diesel) (Loader Long Track) | TS-9 Tractor Shovel (Shovel Tractor Section) . This parts manual is a digitally enhanced reproduction of the original manufacturer-issued Shop Manual. A historically accurate parts manual is essential when ordering parts and doing repairs. Our reproduction manual has exploded views with corresponding descriptions and original part numbers. This information can be critical when ordering parts for specialized or older equipment. The parts manual is the perfect visual companion to the written instructions in the service manual.