International TD-18A 1952
International TD-18A 1952
Model history
Model introduced 1949
Model discontinued 1955
Model status Discontinued
No. produced 11,110
Preceded by TD-18
Superseded by TD-18 Series 181
Engine Specification
Engine make International
Engine model D-691
Fuel type diesel
Power hp 107 net, 98 belt, 86 drawbar
Governed rpm 1350
Displacement cu in /(litre) 691 ci
No. of Cylinders 6
Bore in (mm) 4.75"
Stroke in (mm) 6.5"
Cooling system water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type dual-range sliding gear
Gearbox make International
Forward 6
Reverse 2
Drive crawler
General Data
Linkage Category drawbar
Tyre Sizes (std/options)
Front 20" tracks
Tractor Dimensions
Length (inches/metres) 158"
Width (inches/meters) 82"
Height (inches/meters) 79"
Weight (nominal) lb/kg 22830 lb
Turning circle (nominal) inches/meters 16 ft
Wheelbase 62" gauge
Other info
Factories Melrose Park, Illinois, USA
Plow rating 8-12 14"
Nebraska Tests No. 446
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The International TD-18A was a diesel engined crawler tractor built by the International Harvester company from 1949 to 1955 in Melrose Park, Illinois, USA.

Model historyEdit

For Company history, see International Harvester.

In early 1949, at 80 belt hp the International TD-18 lagged well behind its chief competitors, the 98-hp Allis-Chalmers HD-10 and 93-hp Caterpillar D-7. In mid year International replaced the TD-14 with the TD-14A. The new model looked exactly the same but an increase in engine rpm from 1200 to 1350 boosted the power output to 98 belt hp. This put it ahead of the Caterpillar and equal to the A-C in power for a short time. However, in 1951 Allis-Chalmers brought out the larger and more powerful HD-15 with torque converter drive. In mid-1955 International replaced the TD-18A with the TD-18 Series 181.

Timeline Edit

  • 1949 - TD-18A replaced the original International TD-18
  • 1955 - TD-18 Series 181 replaced TD-18A

Factory locations Edit

  • Melrose Park, Illinois, USA

Specification Edit

See Infobox for basic details

  • Track frame: 5 rollers, 2 top idlers
  • Track gauge: 62"
  • Track shoe width: 20"
  • Electric starting

Variations and Options Edit

  • Optional track gauge: 74"
  • Optional track shoe width: 18", 22" or 24"
  • Belt pulley
  • Pto
  • Electric lights

Serial Numbers Information Edit

Year Serial no. run
Serial no. run
Number Built Notes
1949 TDR22536 22836 301 Number built calculated from serial range
1950 22837 24668 1832
1951 24669 27424 2756
1952 27425 29200 1776
1953 29201 32088 2888
1954 32089 33517 1429
1955 33518 33649 132
Total built 11110[2]

Preservation Edit

Little information on individual examples of these tractors in preservation is currently available on here.

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Gallery Edit

Add extra photos here please.

See also Edit

Collection related info
  • Shows and Meets - events featuring tractors and other machinery
  • Clubs Listing - List of clubs including various tractor marques
  • Collections - list of private collections with tractors (add yours)
  • Museums - includes museums featuring tractors (please add missing ones)

References / Sources Edit

  2. Klancher, Lee, International Harvester Photographic History, Motorbooks International, Osceola, Wisconsin, 1996

External Links Edit

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