I have an I&T Shop Manual for Allis-Chalmers Models D-15 Tractors The manual has the following Contents: Belt Pulley  Brakes  Carburetor (Not LP Gas)  Clutch  Cooling System  Diesel Fuel System  Differential  Electrical  Engine (Diesel) (Non-Diesel)  Final Drive  Front System  Governor (Non-Diesel)  Ignition System  LP-Gas System  "Power Director"  Power Lift System  PTO  Steering Gear  and Transmission