International Harvester 4786
The International Harvester 4786 is a tractor produced by International Harvester. It is equipped with a 798 ci 13.1 L engine. The listed engine power is Diesel (listed): 350 hp / 261.0 kW. Transmission: 10 forward and 2 reverse. Operating weight: 30200 lbs 13698 kg.
Engine Power
Diesel (listed): 350 hp / 261.0 kW
Fuel & Capacities
194 gal
734.3 L
Transmission
10 forward and 2 reverse
Operating Weight
30200 lbs*Weight with 23.1-30 duals.
13698 kg
Overview
 | 1978 - 1981
Four-wheel Drive (4WD) tractorSteiger built
Four-wheel Drive (4WD) tractor
Steiger built |
|---|
Production | |
|---|---|
Distributor | International Harvester |
Manufacturer | Steiger |
Four-wheel Drive (4WD) tractor | |
Built in Fargo, North Dakota, USA | |
Original price was $78,700 in 1981 | |
International Harvester 4786 Engine | |
|---|---|
International Harvester 13.1L 8-cyl diesel | |
Fuel tank | 194 gal
734.3 L |
Engine details ...  | |
International Harvester 4786 Transmission | |
|---|---|
10-speed gear | |
Transmission details ...  |
International Harvester 4786 Power | |
|---|---|
Engine | 350 hp
261.0 kW |
Drawbar (claimed) | 260 hp
193.9 kW |
Drawbar (tested) | 258.20 hp
192.5 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | planetary |
Hydraulic wet disc brakes | |
Cab standard with air-conditioning. | |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 19 gpm
71.9 lpm |
Total flow | 43 gpm
162.8 lpm |
Steering flow | 24 gpm
90.8 lpm |
Tractor hitch | |
|---|---|
Rear Type | IV OptOptional |
Dimensions & Tires | |
|---|---|
Wheelbase | 118 inches
299 cm |
Weight | 30200 lbs
13698 kg |
Front tire | 24.5-32 |
Rear tire | 24.5-32 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
1979 Buyer's Guide published by International Harvester | |
Buyer's Guide 1981 published by International Harvester | |
Buyer's Guide 1982 published by International Harvester |
Engine
Engine Detail — 798 ci / 13.1 L Diesel
Manufacturer | International Harvester DVT-800 |
Configuration | turbocharged diesel, 8-cylinder, liquid-cooled |
Displacement | 798 ci
13.1 L |
Bore/Stroke | 5.31x4.50 inches
135 x 114 mm |
Power | 350 hp
261.0 kW |
Air cleaner | dry |
Compression | 15.6:1 |
Rated RPM | 2600 |
Idle RPM | 1000-2850 |
Starter volts | 12 |
Transmission
Transmission — 10 forward and 2 reverse gear
Type | gear |
Gears | 10 forward and 2 reverse |
Clutch | dry disc |
 | |
Dimensions
International Harvester 4786 Tires | |
|---|---|
Ag front | 24.5-32 |
Ag rear | 24.5-32 |
Dimensions | |
|---|---|
Wheelbase | 118 inches
299 cm |
Length | 241 inches
612 cm |
Width | 117 inches
297 cm |
Operating weight | 30200 lbs*Weight with 23.1-30 duals.
13698 kg |
Front axle | 4 inch diameter
101 mm |
Rear axle | 4 inch diameter
101 mm |
Front tread | 68.1 to 125.1 inches
172 to 317 cm |
Rear tread | 68.1 to 125.1 inches
172 to 317 cm |
International Harvester 4786 Height | |
|---|---|
Hood | 95 inches
241 cm |
Cab | 134 inches
340 cm |
Exhaust | 146 inches
370 cm |
Tests
Nebraska Tractor Test 1317 | |
|---|---|
Diesel 10-speed 4WD
May 23 - 29, 1979
Link: Nebraska Tractor Test 1317 file | |
Drawbar performance | |
Max power | 258.20 hp
192.5 kW |
Fuel use | 20.2 gal/hour
76.5 l/hour |
Gear 3H used for power test. | |
Max pull | 33468 lbs
15181 kg |
Gear 1H used for pull test. | |
Photos
International Harvester 4786
International Harvester 4786
International Harvester 4786
International Harvester 4786
International Harvester 4786
International Harvester 4786
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester 4786 based on its 350 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester 4786.
Estimated Continuous Field Runtime: 10.7 hrs
Approximately 10.7 hours of continuous field operation at ~75% rated power on a full tank (194 gal / 734.4 L).
Estimated 75% Load Fuel Burn~18.2 gal/hr (68.9 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
International Harvester 4786 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester 4786.
Converted Equivalents:
Horsepower (HP)350 hp
Kilowatts (kW)261 kW
Metric Horsepower (PS / CV)354.9 PS
Direct Competitor Comparison
Compare International Harvester 4786 against same-era industry alternatives in the same horsepower class.
Current Model
International Harvester
International Harvester 4786
Engine Power:Diesel (listed): 350 hp / 261.0 kW
★ Baseline Reference
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