The International Harvester 634 tractor is powered by a International Harvester 4.6L 4-cyl diesel engine that provides 66hp / 49.2kW of horsepower and 225 lb-ft /305.1 Nm torque. It has a 4x2 2WD/4x4 4WD*Four-wheel drive conversion by County drive configuration and a 8-speed transmission.

Engine

The engine is a 4-cylinder liquid-cooled International Harvester BD-281 diesel with a displacement of 281ci / 4.6L. It has a bore/stroke of 4.125x5.25inches / 105x 133 mm and produces 66hp / 49.2kW of power at a rated rpm of 1600. The engine generates a torque of 225 lb-ft /305.1 Nm at 1000 rpm and has a 12-volt starter. The engine is known for its reliability, durability, and fuel efficiency.


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Transmission

The transmission is an 8-speed manual with a dry disc clutch of 330mm. It has a claimed PTO power of 59.3hp / 44.2kW and is powered by the 66hp / 49.2kW engine. The transmission is smooth and easy to shift, providing excellent control over the tractor's speed and power. It is also known for its durability and low maintenance requirements.

Brakes

The brakes are mechanical disc brakes that provide reliable and consistent stopping power. The brake system is integrated with the transmission, allowing for smooth and precise control over the tractor's speed. The brakes are easy to maintain and are known for their durability and longevity. The engine brake is also effective, providing additional stopping power when needed.



Steering

The steering is manual for the 2WD version and power for the 4WD version. The steering system is responsive and provides excellent control over the tractor's direction. The steering wheel is comfortable to grip and easy to turn, even for extended periods of use. The fuel tank has a capacity of 20.4gal / 77.2L, providing ample fuel for long periods of use.


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Common Problems

Users have reported issues with the chassis, particularly with the 4x4 conversion by County. Some users have also reported problems with the brakes, which can wear out quickly if not properly maintained. The cab is optional and can be expensive to install. Some users have also reported issues with the transmission, particularly with the 8-speed manual.

What Users Like

Users appreciate the tractor's versatility, with different tire options available for different terrains. The tractor is also known for its reliability and durability, with many users reporting years of trouble-free use. The tractor's fuel efficiency is also a popular feature, with many users reporting low fuel consumption even during heavy use.

International Harvester 634 Technical Specifications

Power

Engine66hp / 49.2kW
Pto (claimed)59.3hp / 44.2kW

Engine Detail

DescriptionInternational Harvester BD-281 diesel 4-cylinder liquid-cooled
Displacement281ci / 4.6L
Bore/stroke4.125x5.25inches / 105x 133 mm
Power66hp / 49.2kW
Rated Rpm1600
Torque225 lb-ft /305.1 Nm
Torque Rpm1000
Starter Volts12

Engine

DescriptionInternational Harvester 4.6L 4-cyl diesel
Fuel Tank20.4gal / 77.2L

Transmission

Gears8 forward and 2 reverse
Clutch330mm dry disc

Mechanical

Chassis4x2 2WD/4x4 4WD*Four-wheel drive conversion by County
2wd Steeringmanual
4wd Steeringpower
Brakesmechanical disc
CabOpen operator station. Cab optional
Transmission8-speed

Tires

2wd Standard Tires (ag)Front: 7.50-16. Rear: 11-38
4wd Standard Tires (ag)Front: 10-24. Rear: 12-38
Awd Standard Tires (ag)Front: 14-30. Rear: 14-30

Dimensions

2wd Wheelbase86.8inches / 220cm
4wd Wheelbase86.8inches / 220cm
Awd Wheelbase75inches / 190cm
2wd Length138inches / 350cm
4wd Length139inches / 353cm
Awd Length150inches / 381cm
Width65.5inches / 166cm
Height (cab)96inches / 243cm
2wd Front Tread52 to 61inches / 132to 154 cm
4wd Front Tread53 to 66inches / 134to 167 cm
Awd Front Tread60 to 80inches / 152to 203 cm
2wd Rear Tread56 to 72inches / 142to 182 cm
4wd Rear Tread56 to 72inches / 142to 182 cm
Awd Rear Tread60 to 80inches / 152to 203 cm

Dimensions And Tires

2wd Wheelbase86.8inches / 220cm
4wd Wheelbase86.8inches / 220cm
Awd Wheelbase75inches / 190cm
Weight6546 to 9574 pounds
Front Tire7.50-16
2wd Rear Tire11-38

Hydraulics

Pressure2500psi / 172.4bar
Pump Flow10.4gpm / 39.4lpm
Steering Flow4.8gpm / 18.2lpm
Steering Press.1500psi / 103.4bar

Tractor Hitch

Rear TypeII
Controlposition and draft control
Rear Lift3360lbs / 1524kg

Electrical

Charging Systemgenerator
Battery Volts12
Battery Ah95

Power Take Off Pto

Rear Ptoindependent
Rear Rpm540 (1.375)
Engine Rpm540@1458

Weight

2wd Operating6546lbs / 2969kg
4wd Operating7694lbs / 3489kg
Awd Operating9574lbs / 4342kg

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