International Harvester industrial tractors

International Harvester TD-25B

The International Harvester TD-25B is an industrial crawler tractor produced from 1962 to 1973. It features a powerful 230 hp turbocharged 6-cylinder diesel engine, liquid-cooled with direct injection. The tractor offers two transmission options: a 4-speed full power shift and an 8-speed two-speed power shift, both designed for heavy-duty industrial applications. It rides on 22-inch wide tracks and weighs 50,000 lbs, providing excellent traction and stability. The TD-25B has an open operator station and a rear PTO driven by the transmission. It is part of the TD-25 series, related to the TD-25C model.

Power-

Founded-

ModelTD-25B

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Technical Specifications

Detailed specifications and technical data for International Harvester TD-25B

Power

Engine power	230 hp (171.5 kW)
Drawbar (claimed)	185 hp (138.0 kW)

Engine

Type	turbocharged diesel
Model	International Harvester DT-817B
Power	230 hp (171.5 kW)
Cooling	liquid-cooled
Starter	electric
Cylinders	6-cylinder
Fuel tank	160 gal (605.6 L)
Rated RPM	1600
Air cleaner	dry
Bore/Stroke	5.375x6.00 inches (137 x 152 mm)
Fuel system	direct injection
Displacement	817 ci (13.4 L)
Oil capacity	35 qts (33.1 L)
Starter volts	24
Coolant capacity	96 qts (90.9 L)

Tracks

Width	22 inches (55 cm)
Area on ground	5192 in² (3.3 m²)
Length on ground	118 inches (299 cm)

Dimensions

Weight	50000 lbs (22680 kg)

Mechanical

Drive	crawler
Operator station	Open operator station.

Production

Type	Industrial Crawler tractor
Years made	1962 - 1973
Manufacturer	International Harvester

Transmission

Type (4-speed)	full power shift
Type (8-speed)	two-speed power shift
Gears (4-speed)	4 forward and reverse
Gears (8-speed)	8 forward and reverse
Notes (4-speed)	Power shift transmission with torque converter.
Notes (8-speed)	Four-speed gear transmission with two-speed power shift.
Transmission options	4-speed full power shift, 8-speed two-speed power shift
Oil capacity (4-speed)	300 qts (283.9 L)
Oil capacity (8-speed)	240 qts (227.1 L)