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 of torque. It has a 4x2 2WD/4x4 4WD*Four-wheel drive conversion by County drive configuration and a 8-speed transmission.
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.
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.
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.
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.
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.
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.
Power | |
|---|---|
| Engine | 66hp / 49.2kW |
| Pto (claimed) | 59.3hp / 44.2kW |
Engine Detail | |
| Description | International Harvester BD-281 diesel 4-cylinder liquid-cooled |
| Displacement | 281ci / 4.6L |
| Bore/stroke | 4.125x5.25inches / 105x 133 mm |
| Power | 66hp / 49.2kW |
| Rated Rpm | 1600 |
| Torque | 225 lb-ft /305.1 Nm |
| Torque Rpm | 1000 |
| Starter Volts | 12 |
Engine | |
| Description | International Harvester 4.6L 4-cyl diesel |
| Fuel Tank | 20.4gal / 77.2L |
Transmission | |
| Gears | 8 forward and 2 reverse |
| Clutch | 330mm dry disc |
Mechanical | |
| Chassis | 4x2 2WD/4x4 4WD*Four-wheel drive conversion by County |
| 2wd Steering | manual |
| 4wd Steering | power |
| Brakes | mechanical disc |
| Cab | Open operator station. Cab optional |
| Transmission | 8-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 Wheelbase | 86.8inches / 220cm |
| 4wd Wheelbase | 86.8inches / 220cm |
| Awd Wheelbase | 75inches / 190cm |
| 2wd Length | 138inches / 350cm |
| 4wd Length | 139inches / 353cm |
| Awd Length | 150inches / 381cm |
| Width | 65.5inches / 166cm |
| Height (cab) | 96inches / 243cm |
| 2wd Front Tread | 52 to 61inches / 132to 154 cm |
| 4wd Front Tread | 53 to 66inches / 134to 167 cm |
| Awd Front Tread | 60 to 80inches / 152to 203 cm |
| 2wd Rear Tread | 56 to 72inches / 142to 182 cm |
| 4wd Rear Tread | 56 to 72inches / 142to 182 cm |
| Awd Rear Tread | 60 to 80inches / 152to 203 cm |
Dimensions And Tires | |
| 2wd Wheelbase | 86.8inches / 220cm |
| 4wd Wheelbase | 86.8inches / 220cm |
| Awd Wheelbase | 75inches / 190cm |
| Weight | 6546 to 9574 pounds |
| Front Tire | 7.50-16 |
| 2wd Rear Tire | 11-38 |
Hydraulics | |
| Pressure | 2500psi / 172.4bar |
| Pump Flow | 10.4gpm / 39.4lpm |
| Steering Flow | 4.8gpm / 18.2lpm |
| Steering Press. | 1500psi / 103.4bar |
Tractor Hitch | |
| Rear Type | II |
| Control | position and draft control |
| Rear Lift | 3360lbs / 1524kg |
Electrical | |
| Charging System | generator |
| Battery Volts | 12 |
| Battery Ah | 95 |
Power Take Off Pto | |
| Rear Pto | independent |
| Rear Rpm | 540 (1.375) |
| Engine Rpm | 540@1458 |
Weight | |
| 2wd Operating | 6546lbs / 2969kg |
| 4wd Operating | 7694lbs / 3489kg |
| Awd Operating | 9574lbs / 4342kg |