| Manufacturer | International Harvester |
| Price | 3,848(USD) |
| Model | 634 |
| Equipment Type | - |
| Factory | Doncaster, England |
INTERNATIONAL HARVESTER 634 POWER
| Engine | 66hp / 49.2kW |
| PTO (claimed) | 59.3hp / 44.2kW |
ENGINE DETAIL
The International Harvester 634 is powered by a BD-281 diesel engine with a displacement of 4.6L, generating 66hp at a rated RPM of 1600, making it suitable for mid-range agricultural tasks. Notably, it delivers strong torque of 225 lb-ft at 1000 RPM, providing substantial pulling power for heavy implements. However, operators should consider its relatively limited power output for high-demand tasks or extensive fieldwork compared to more modern tractors.
| 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 |
INTERNATIONAL HARVESTER 634 ENGINE
The International Harvester 634 tractor is equipped with a robust 4.6L 4-cylinder diesel engine, providing a balance of power and efficiency suitable for medium-duty agricultural tasks. With a substantial fuel tank capacity of 20.4 gallons (77.2 liters), it boasts extended operational time between refuels, a key advantage during extended fieldwork. However, potential challenges may include maintenance of the diesel engine and ensuring proper fuel quality to optimize performance and longevity.
| Description | International Harvester 4.6L 4-cyl diesel |
| Fuel tank | 20.4gal / 77.2L |
TRANSMISSION
The International Harvester 634 features an 8-speed forward and 2-speed reverse gear system, providing versatility for varying field conditions and tasks. The 330mm dry disc clutch offers reliable engagement and disengagement but may require more maintenance than hydraulic clutches under heavy use. Ideal for moderate agricultural tasks, users should balance load demands with clutch durability to prevent premature wear.
| Gears | 8 forward and 2 reverse |
| Clutch | 330mm dry disc |
MECHANICAL
The International Harvester 634 features a versatile 4x2 or optional 4WD configuration, enhancing traction in variable terrain, though the 2WD's manual steering could present handling challenges in rugged environments. Its mechanical disc brakes provide reliable stopping power, yet may require more maintenance compared to hydraulic systems. With an 8-speed transmission, the tractor offers efficient power management for diverse agricultural tasks, making it suitable for both light-duty and moderate farm operations.
| 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 |
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 |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1458 |
INTERNATIONAL HARVESTER 634 TIRES
The International Harvester 634 tractor can be configured with various drivetrains and tire sizes, each offering distinct advantages for different applications. The 2WD variant is optimal for lighter agricultural tasks on flat terrain due to its lower operational cost, while the 4WD version enhances traction and stability on uneven and muddy soils, making it suitable for more challenging field conditions. The AWD configuration significantly boosts off-road capability and maneuverability, although it may incur higher maintenance costs and fuel consumption; ideal for demanding tasks in diverse agricultural settings.
| 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 |
INTERNATIONAL HARVESTER 634 WEIGHT
| 2WD Operating | 6546lbs / 2969kg |
| 4WD Operating | 7694lbs / 3489kg |
| AWD Operating | 9574lbs / 4342kg |
DIMENSIONS & TIRES
The International Harvester 634 tractor features a consistent wheelbase of 86.8 inches for both 2WD and 4WD configurations, providing stability and maneuverability. Weights ranging from 6546 to 9574 pounds indicate versatility for various tasks, though heavier configurations may compromise mobility in softer soil conditions. Its tire sizes (7.50-16 front and 11-38 rear) contribute to traction, but optimal tire selection and inflation are crucial for balancing performance and soil preservation during operations.
| 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 |
ELECTRICAL
| Charging system | generator |
| Battery volts | 12 |
| Battery AH | 95 |