 International TD-25B-PS, 1967 | |
| Model history | |
|---|---|
| Model introduced | 1962 |
| Model discontinued | 1973 |
| Model status | Discontinued |
| No. produced | 2,257 |
| Preceded by | TD-25TC Series 250 |
| Superseded by | International TD-25C |
| Engine Specification | |
| Engine make | International |
| Engine model | DT-817 |
| Fuel type | diesel |
| Power hp | 230 net engine |
| Governed rpm | 1600 |
| Displacement cu in /(litre) | 817 ci |
| No. of Cylinders | 6 |
| Bore in (mm) | 5.375 in |
| Stroke in (mm) | 6 in |
| Cooling system | water |
| Naturally aspirated, Turbo or Supercharged | turbocharged |
| Transmission Details | |
| Transmission type | power shift with torque converter and 2-speed power shift in tracks |
| Forward | 4 |
| Reverse | 4 |
| Drive | crawler |
| General Data | |
| Linkage Category | drawbar |
| Tyre Sizes (std/options) | |
| Front | 22" tracks |
| Tractor Dimensions | |
| Length (inches/metres) | 200" |
| Width (inches/meters) | 102" |
| Height (inches/meters) | 101" |
| Weight (nominal) lb/kg | 47000 lb |
| Wheelbase | 80" gauge |
| Other info | |
| Factories | USA |
| Plow rating | |
The International TD-25B-PS was a diesel engined crawler tractor built by the International Harvester company from 1962 to 1973 in the USA.
Model history[]
- For Company history, see International Harvester.
For gear drive version see: International TD-25B
The International TD-25B-PS replaced the TD-25TC Series 250. The new model was fitted with a 2-speed power shift instead of the previous hand clutch and 2-speed constant mesh manual transmission. Combined with the 2-speed planetary power shift tracks this provided 4 power shifted speeds forward and reverse. The governed engine speed was increased to 1600 rpm, with no change in rated power. The 230 net hp 4-speed TD-25B-PS originally competed with the 225-hp 2-speed Allis-Chalmers HD-21 and the 235-hp 3-speed Caterpillar D-8H. However, in 1963 Allis-Chalmers replaced the HD-21 with the 268-hp HD-21P. In 1966 Caterpillar increased the power of the D-8H to 270 net hp and moved it out of the International's class also. Later, the 223-hp Fiat-Allis FD-20 and 220-hp Komatsu D-85E competed with the International. International kept the TD-25B-PS in production until 1973.
Timeline[]
- 1962 - TD-25B-PS replaced TD-25TC Series 250
- 1973 - TD-25B-PS discontinued
Factory locations[]
Specification[]
See Infobox for basic details
- Track frame: 7 rollers, 2 top idlers
- Track gauge: 80"
- Track shoe width: 22"
Variations and Options[]
- Optional track shoe width: 26"
Serial Numbers Information[]
| Year | Serial no. run start |
Serial no. run End |
Number Built | Notes |
|---|---|---|---|---|
| 1962 | 1801 | 1939 | 139 | Total calculated from serial range |
| 1963 | 1940 | 2274 | 335 | |
| 1964 | 2275 | 2792 | 518 | |
| 1965 | 2793 | 3072 | 280 | |
| 1966 | 3073 | 3390 | 318 | |
| 1967 | 3391 | 3719 | 329 | |
| 1968 | 3720 | 3890 | 171 | |
| 1969 | 3891 | 4000 | 110 | |
| 1970 | 4001 | 4019 | 19 | |
| 1971 | 4020 | 4039 | 20 | |
| 1972 | 4040 | 4057 | 18 | |
| 1973 | 4058 | |||
| Total built | 2257 | Not including 1973 | ||
Preservation[]
No information on any individual examples of these tractors in preservation is currently available on here.
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Gallery[]
Add extra photos here please.
See also[]
- International TD-25TC Series 250
- International TD-25B (gear drive version)
- International TD-25C
- List of Tractor Manufacturers
- List of International Harvester Vehicles
- 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[]
External Links[]
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