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| identification: | tractor |
| type: | Lanz Bulldog D-3506 |
| country of origin: | Germany |
| manufacturer: | Heinrich Lanz, AG |
| engine: | 4700 cm³ |
| horse power/revolutions (rev/min): | 19.6/850 |
| number of cylinders: | 1 |
| drilling/return stroke (mm): | 170 |
| cubic content: | 210 |
| fuel: | diesel |
| cooling system: | water-cooling |
| dimensions: | 2920x1470x1955 mm |
| weight: | 1800 kg |
| years of production: | 1937-1942 |
| The company Heinrich Lanz AG was founded in 1895 by Heinrich Lanz, originally as an agricultural machinery repair shop. In 1867 the company started to manufacture ploughs, and from 1879 it made steam locomotives. The tractor Lanz Bulldog with an internal combustion engine was produced from 1921. | |