Power: 47 hp[B] Date of manufacture : 1930 - 1936
Production Manufacturer: Allis Chalmers Type: Standard-tread tractor Factory: West Allis, Wisconsin, USA Total built: 2,426 Allis Chalmers 25-40 Power Drawbar (claimed): 27 hp 20.1 kW Belt (claimed): 42.6 hp 31.8 kW Drawbar (tested): 33.82 hp 25.2 kW Belt (tested): 47.00 hp 35.0 kW Allis Chalmers 25-40 Engines Mechanical Chassis: 4x2 2WD Steering: manual Cab: Open operator station. Transmission: 2-speed gear Photos Allis Chalmers 25-40 photos... Dimensions & Tires Weight: 7,000 lbs 3175 kg Front tire: 36x6 Rear tire: 50x12 Full dimensions and tires ... 25-40 Serial Numbers Location: front of shifter on transmission case 1930: 24186 1931: 24843 1932: 24972 1933: 25024 1934: 25062 1935: 25309 1936: 25582 Final: 25611 how to read serial numbers...

Allis Chalmers 6-12	Power: 13 hp[B]	Date of manufacture : 1919 - 1926

Allis Chalmers 10-18	Power: 20 hp[B]	Date of manufacture : 1914 - 1923

Allis Chalmers 18-30	Power: 33 hp[B]	Date of manufacture : 1918 - 1921

Allis Chalmers 20-35	Power: 38 hp[B]	Date of manufacture : 1922 - 1930

Allis Chalmers 25-40	Power: 47 hp[B]	Date of manufacture : 1930 - 1936

Allis Chalmers 160	Power: 40 hp	Date of manufacture : 1970 - 1975

Allis Chalmers 170	Power: 60 hp[P]	Date of manufacture : 1967 - 1973

Allis Chalmers 175	Power: 69 hp[P]	Date of manufacture : 1970 - 1980

Allis Chalmers 180	Power: 71 hp[P]	Date of manufacture : 1967 - 1973