International TD-24 Torque Converter Series 241 1955
International TD-24 Torque Converter Series 241 with standard 6-roller tracks, 1955
Model history
Model introduced 1955
Model discontinued 1959
Model status Discontinued
Preceded by TD-24 (gear drive)
Superseded by TD-25 Series 250
Engine Specification
Engine make International
Engine model D-1091
Fuel type diesel
Power hp 200 net engine
Governed rpm 1500
Displacement cu in /(litre) 1091 ci
No. of Cylinders 6
Bore in (mm) 5.75 in
Stroke in (mm) 7 in
Cooling system water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type 2-speed constant mesh with torque converter and 2-speed planetary power shift in each track
Gearbox make International
Forward 4
Reverse 4
Drive crawler
General Data
Linkage Category drawbar
Tyre Sizes (std/options)
Front 22" tracks
Tractor Dimensions
Length (inches/metres) 182"
Width (inches/meters) 102"
Height (inches/meters) 95"
Weight (nominal) lb/kg 40375 lb
Turning circle (nominal) inches/meters 24 ft
Wheelbase 80" gauge
Other info
Factories USA
Plow rating
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The International TD-24 Torque Converter Series 241 was a diesel engined crawler tractor built by the International Harvester company from 1955 to 1959 in the USA.

Model historyEdit

For Company history, see International Harvester.

Allis-Chalmers made torque converter drive optional on its HD-14 in 1946 and standard on its HD-19 in 1948. It took Caterpillar and International until mid-1955 to come out with torque converter models. The International TD-24 Torque Converter Series 241 weighed 40,375 lb and developed 200 hp (150 kW) net from its 1500 rpm engine. It combined the torque converter with a 2-speed constant mesh manual transmission and 2-speed power shifted tracks for 4-speeds forward and reverse, giving it an advantage over its competitors. The Caterpillar D8D Series 15A weighed 41,600 lb and was rated at 191 hp (142 kW). It used a 3-speed manual transmission with the torque converter. The Allis-Chalmers HD-21 was slightly larger and more powerful than the International, at 44,000 lb and 204 hp (152 kW), but had only a 2-speed transmission with its torque converter. In 1957, Allis-Chalmers increased the HD-21 to 225 hp (168 kW), and in 1959 Caterpillar brought out the D8H, with 235 hp (175 kW) and an optional 3-speed full-power shift transmission. In mid-year International replaced the TD-24 with the all new TD-25 Series 250.

Timeline Edit

Factory locations Edit

Specification Edit

See Infobox for basic details

  • Track frame: 6 rollers, 2 top idlers
  • Track gauge: 80"
  • Track shoe width: 22"

Variations and Options Edit

  • Optional track frame: 7 rollers, 2 top idlers
  • Optional track shoe width: 24"

Serial Numbers Information Edit

Year Serial no. run
Serial no. run
Number Built Notes
1955 601 825 225 Total calculated from serial range
1956 826 1249 424
1957 1250 1419 170
1958 1420 1598 179
1959 1599
Total built Included with gear drive model

Preservation Edit

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