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International Harvester TD-25B

International Harvester TD-25B tractor
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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.
International HarvesterTD-25Bindustrial crawler tractor230 hpdiesel enginepower shift transmissiontractor specifications
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ModelTD-25B

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)

Power Take-off (PTO)

Rear PTO:transmission

Related Models

International Harvester TD-25C

Model:TD-25C