surat

TD24 International bulldozer and 3 metre scraper moving soil in Surat, ca. 1953

from State Library of Queensland

• Vesna Verencevic said:

  The giant TD-24 was the new flagship for International’s crawler line. It weighed about 20 tons (with dozer blade) and was powered by a new 180 hp (130 kW) 1091ci 6-cylinder diesel. The transmission and steering design was unique. The main transmission was a 4-speed synchromesh (for on-the-go shifting), and it had a separate forward and reverse unit for fast cycling in dozer work. There were also power-shifted 2-speed planetary gears in each track that made up the Planet Power Steering system. The planetary gears were controlled by the steering levers. Combining the high and low range of the planetary gears with the main transmission provided a total of 8 forward (and 8 reverse) speeds. Putting one track in high range and one in low caused a gentle turn with power to both tracks. For sharper turns, the pivot brakes disconnected the inside track, as with a normal crawler. Timeline 1947 - International TD-24 introduced 1955 - TD-24 upgraded to Series 241 Source: tenindewa.com/wp-content/uploads/2017/03/International-TD...