International Harvester BTD-6
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| Production | |
| Manufacturer | International Harvester |
| Agricultural Crawler tractor | |
| Built in Doncaster, England | |
| Total built | 18632 |
| Variants | |
| BT-6 | petrol |
| BTD-6 | diesel |
| International Harvester BTD-6 Engine | |
| International Harvester 4.3L 4-cyl diesel | |
| Fuel tank | 20.1 gal 76.1 L |
 Engine details ... | |
| International Harvester BTD-6 Power | |
| Engine (gross) | 55 hp 41.0 kW |
| Engine (net) | 50.5 hp 37.7 kW |
| Drawbar (claimed) | 40.6 hp 30.3 kW |
| Belt (claimed) | 47.9 hp 35.7 kW |
| Mechanical | |
| Drive | crawler |
| Final drives | bull gear |
| Open operator station | |
| Dimensions & Tracks | |
| Weight | 9100 lbs 4127 kg |
| 14-inch tracks | |
 Full dimensions and tracks ... | |
| BTD-6 Serial Numbers | |
| 1953 | 501 |
| 1954 | 757 |
| 1955 | 1942 |
| 1956 | 3462 |
| 1957 | 4641 |
| 1958 | 6463 |
| 1959 | 7932 |
| 1960 | 9944 |
| 1961 | 12038 |
| 1962 | 14492 |
| 1963 | 16125 |
| 1964 | 18076 |
| 1965 | 19373 |
| 1966 | 19707 |
| 1967 | 19924 |
| 1968 | 20138 |
| 1969 | 20262 |
| 1970 | 20414 |
| 1971 | 20560 |
| 1972 | 20645 |
| 1973 | 20723 |
| 1974 | 20858 |
| 1975 | 20900 |
FAQ: How to read a serial number table. | |
| Electrical | |
| Charging system | generator |
| References | |
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| International 1917-1961 Vintage Tractor Special by Allen Condie* | |
| The Roar of Dust and Diesel - A Story of International Harvester Doncaster by Mike Teanby | |
| Technical Annual published in 1967, by Power Farming | |
| BTD-6 Laderaupe published by International Harvester | |
| World Wide Farm Equipment Buyer's Guide published in 1968, by International Harvester* | |
| Farm Crawlers published by International Harvester | |
| *Publication contains known errors. |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on January 31, 2023 |