Power: 93 hp[B] Date of manufacture : 1951 - 1955
Production Manufacturer: Allis Chalmers Type: Agricultural Crawler tractor Factory: Springfield, Illinois, USA Total built: 5,850 Allis Chalmers HD9 Power Drawbar (claimed): 70 hp 52.2 kW Belt (claimed): 84 hp 62.6 kW Drawbar (tested): 67.39 hp 50.3 kW Belt (tested): 79.1 hp 59.0 kW Allis Chalmers HD9 Engine Mechanical Chassis: crawler Cab: Open operator station. Transmission: 6-speed gear Photos Allis Chalmers HD9 photos... Dimensions & Tracks Weight: 18800 lbs 8527 kg 16-inch tracks Full dimensions and tracks ... HD9 Serial Numbers Location: Steering clutch housing or instrument panel 1950: 1 1951: 2 1952: 738 1953: 1883 1954: 3591 1955: 5209 Final: 5850 how to read serial numbers...

Allis Chalmers HD3	Power: 36 hp[P]	Date of manufacture : 1960 - 1968

Allis Chalmers HD5	Power: 47 hp[B]	Date of manufacture : 1946 - 1955

Allis Chalmers HD6	Power: 57 hp	Date of manufacture : 1955 - 1974

Allis Chalmers HD7	Power: 66 hp[B]	Date of manufacture : 1940 - 1950

Allis Chalmers HD9	Power: 93 hp[B]	Date of manufacture : 1951 - 1955

Allis Chalmers HD10	Power: 95 hp[B]	Date of manufacture : 1940 - 1950

Allis Chalmers HD11	Power: 130 hp	Date of manufacture : 1955 - 1965

Allis Chalmers HD14	Power: 161 hp[B]	Date of manufacture : 1939 - 1947

Allis Chalmers HD15	Power: 116 hp[B]	Date of manufacture : 1951 - 1955