Power: 57 hp Date of manufacture : 1955 - 1974
Production Manufacturer: Allis Chalmers Type: Agricultural Crawler tractor Factory: Springfield, Illinois, USA Variants HD6A: 44-inch gauge HD6B: 60-inch gauge HD6E: 5-roller HD6G: loader HD6EP: power shift HD6AG: turbocharged Allis Chalmers HD6 Power Engine (net): 57 hp 42.5 kW Drawbar (claimed): 45 hp 33.6 kW Belt (claimed): 55 hp 41.0 kW Drawbar (tested): 49.95 hp 37.2 kW Belt (tested): 60.51 hp 45.1 kW Allis Chalmers HD6 Engine Mechanical Chassis: crawler Cab: Open operator station. Transmissions: 5-speed sliding gear   2-speed power shift Photos Allis Chalmers HD6 photos... Dimensions & Tracks Weight: 12400 to 13400 pounds 13-inch tracks Full dimensions and tracks ... HD6 Serial Numbers Location: Serial number stamped on the rear of steering clutch housing (upper-right) or on the instrument panel.

Allis Chalmers FD4	Power: 0	Date of manufacture : 0000 - 0000

Allis Chalmers FD5	Power: 50 hp	Date of manufacture : 1963 - 1964

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