Caterpillar - D2

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Few tractor names are better known than Caterpillar. From their beginnings in 1904 their speciality has always been track-laying or crawler tractors. The Caterpillar D2 was introduced specifically for agricultural used in 1938. It could handle a three/four furrow plough and was powered by a four-cylinder diesel engine of 26 drawbar and 32 belt horsepower. Speeds of up to 5mph were possible in top (fifth) gear. An interesting feature of the Caterpillar was that it used a horizontally-opposed, twin-cylinder, 10hp petrol engine as a starter motor. Known as a "donkey" starter, these were standard on all Cat diesels. In addition to overcoming the problem of unreliable starting they also kept wear on the engine to a minimum when starting cold.

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