| Manufacturer |
International Harvester |
| Price |
78,700(USD) |
| Model |
4786 |
| Equipment Type |
Four-wheel Drive 4WD Tractors |
| Factory |
Fargo, North Dakota, USA |
NEBRASKA TRACTOR TEST 1317
| Description |
Diesel 10-speed 4WD May 23 - 29, 1979 Link: Nebraska Tractor Test 1317 file Drawbar performance Gear 3H used for power test Gear 1H used for pull test |
| Max power |
258.20hp / 192.5kW |
| Fuel use |
20.2gal/hour / 76.5l/hour |
| Max pull |
33468lbs / 15181kg |
INTERNATIONAL HARVESTER 4786 POWER
| Engine |
350hp / 261.0kW |
| Drawbar (claimed) |
260hp / 193.9kW |
| Drawbar (tested) |
258.20hp / 192.5kW |
ENGINE DETAIL
The International Harvester 4786 is powered by a robust DV-800 turbocharged diesel engine, providing 350 horsepower at 2,600 RPM, making it suitable for heavy-duty agricultural tasks. With a large displacement of 13.1L and a high compression ratio of 15.6:1, it offers excellent torque and efficiency, although maintenance of the dry air cleaner system is crucial for optimal performance. The engine's significant bore and stroke dimensions (5.31x4.50 inches) allow for substantial power output, but may pose challenges with weight management and fuel consumption in specific applications.
| Description |
International Harvester DV-800 turbocharged diesel 8-cylinder liquid-cooled |
| Displacement |
798ci / 13.1L |
| Bore/Stroke |
5.31x4.50inches / 135x 114mm |
| Power |
350hp / 261.0kW |
| Air cleaner |
dry |
| Compression |
15.6:1 |
| Rated RPM |
2600 |
| Starter volts |
12 |
INTERNATIONAL HARVESTER 4786 ENGINE
The International Harvester 4786 features a robust 13.1L 8-cylinder diesel engine, offering high torque and power for demanding agricultural tasks, ideal for heavy-duty applications. With a substantial fuel tank capacity of 194 gallons (734.3L), it allows for extended operation intervals, reducing the need for frequent refueling during long working hours. However, the size and weight of the tractor can pose challenges in terms of maneuverability in tighter fields.
| Description |
International Harvester 13.1L 8-cyl diesel |
| Fuel tank |
194gal / 734.3L |
TRANSMISSION
The International Harvester 4786 features a sliding gear transmission with 10 forward and 2 reverse speeds, offering versatile gear choices for varied field conditions, enhancing operational efficiency. The dry disc clutch promotes durable performance under high-stress situations but may require more frequent adjustments compared to hydraulic options. In scenarios demanding frequent gear shifts, such as tillage or transport, this setup can present a learning curve for operators unfamiliar with sliding gear systems.
| Type |
sliding gear |
| Gears |
10 forward and 2 reverse |
| Clutch |
dry disc |
MECHANICAL
The International Harvester 4786's 4x4 articulated design enhances maneuverability in tight spaces, making it suitable for large-scale farming or uneven terrain. The hydraulic wet disc brakes offer superior stopping power and reduced wear compared to traditional braking systems, contributing to improved safety. The 10-speed sliding gear transmission allows for optimal speed adjustments, crucial for various applications, but may require operators to adapt to shifting patterns for maximum efficiency.
| Chassis |
4x4 articulated 4WD |
| Brakes |
hydraulic wet disc |
| Cab |
Cab standard with air-conditioning |
| Transmission |
10-speed sliding gear |
HYDRAULICS
| Pump flow |
19gpm / 71.9lpm |
TRACTOR HITCH
INTERNATIONAL HARVESTER 4786 TIRES
The International Harvester 4786 tractor is equipped with oversized Ag tires (24.5-32) on both the front and rear, which enhances traction and stability on uneven terrain. This tire configuration provides effective weight distribution, improving flotation in soft field conditions but may increase soil compaction if used excessively. For best performance, consider implementing a rotational field system to mitigate potential compaction while maximizing crop yield.
| Ag front |
24.5-32 |
| Ag rear |
24.5-32 |
DIMENSIONS
| Wheelbase |
118inches / 299cm |
| Operating weight |
30200lbs / 13698kg *Weight with 23.1-30 duals |
| Front tread |
68.1 to 125.1inches / 172to 317cm |
| Rear tread |
68.1 to 125.1inches / 172to 317cm |
DIMENSIONS & TIRES
The International Harvester 4786 features a substantial wheelbase of 118 inches, providing stability during high-torque applications, making it suitable for heavy tillage and large implement operations. Weighing 30,200 lbs, this tractor's mass aids in traction but may pose challenges in softer soils or on slopes due to potential sinking. The uniform 24.5-32 tire size enhances balanced weight distribution, facilitating effective field navigation and reducing soil compaction.
| Wheelbase |
118inches / 299cm |
| Weight |
30200lbs / 13698kg |
| Front tire |
24.5-32 |
| Rear tire |
24.5-32 |
