International Harvester 786 Tractor

Manufacturer	International Harvester
Price	1,844(USD)
Model	786
Equipment Type	Row-Crop Tractors
Factory	Rock Island, Illinois, USA

NEBRASKA TRACTOR TEST 1388

Description	Diesel April 1981 PTO performance Drawbar performance
Power at rated engine speed	80.20hp / 59.8kW
Fuel use	5.4gal/hour / 20.4l/hour
Max power	69.04hp / 51.5kW

INTERNATIONAL HARVESTER 786 POWER

Drawbar (tested)	69.04hp / 51.5kW
PTO (tested)	80.20hp / 59.8kW

ENGINE DETAIL

The International Harvester 786 is powered by a robust D358 6-cylinder diesel engine, offering a displacement of 5.9L, which provides substantial torque for demanding agricultural tasks. Its dual dry element air cleaner enhances engine efficiency and longevity by minimizing dirt intake, although it necessitates regular maintenance to ensure optimal performance. With a rated RPM of 2400, the tractor is suitable for moderate-speed applications, making it versatile across various farming scenarios while its 24-quart coolant capacity supports effective heat dissipation, reducing the risk of overheating during extensive operations.

Description	International Harvester D358 diesel 6-cylinder liquid-cooled
Displacement	358ci / 5.9L
Bore/Stroke	3.875x5.0625inches / 98x 129 mm
Air cleaner	dual dry element
Rated RPM	2400
Coolant capacity	24qts / 22.7L

ENGINE OIL

The International Harvester 786 tractor has an oil capacity of 12 quarts (11.4 liters), which is critical for optimal engine lubrication and efficient operation. Proper oil maintenance is essential to prevent engine wear and ensure longevity. Given its capacity, operators should regularly check oil levels and maintain quality to mitigate potential challenges such as overheating or reduced performance during prolonged use.

Oil capacity

12qts / 11.4L

INTERNATIONAL HARVESTER 786 ENGINE

The International Harvester 786 tractor is powered by a robust 5.9L 6-cylinder diesel engine, offering excellent torque and fuel efficiency for demanding agricultural tasks. A key advantage is its high hydraulic flow capacity, facilitating effective implement operation. However, challenges may arise in parts availability and engine diagnostics due to its vintage status, which could impact uptime in critical farming scenarios.

Description

International Harvester 5.9L 6-cyl diesel

TRANSMISSION

The International Harvester 786 tractor features a Torque Amplifier (TA) that allows for shifting into a lower speed without clutch engagement, enhancing productivity during varied load conditions. With 16 forward and 8 reverse gears, it offers versatile speed control, although transmission shifts must be performed while stationary, which may impact operational efficiency in time-sensitive tasks. An oil capacity of 90 quarts (85.2L) with IH Hy-Tran ensures optimal hydraulic performance, crucial for maintaining the integrity of the transmission system.

Transmission	Torque Amplifier
Gears	16 forward and 8 reverse
Oil capacity	90qts / 85.2L/IH Hy-Tran/B-6
Description	The tractor must be stopped to shift the transmission (except the TA). The right-most console lever selects range (high, low, or reverse) and the left lever selects one of four gears. The Torque Amplifier (TA) is on the left side of the instrument panel and may be shifted without the clutch. Pulling back engages the TA, reducing the ground speed. Pushing the lever forward puts the transmission in direct drive (DD) mode.

SPEEDS

Description

18.4-34 rear tires

MECHANICAL

The International Harvester 786 tractor features a 4x2 2WD chassis, providing lower initial costs but limiting traction in challenging terrains. Its power-assisted steering enhances maneuverability, while the optional cab allows for operator comfort in varying weather conditions. The 16-speed transmission offers versatility in speed selection, beneficial for both fieldwork and transport tasks, though it may require a learning curve for optimal use.

Chassis	4x2 2WD
Steering	power assist
Brakes	hydraulic disc
Cab	Open operator station. Cab optional.
Transmission	16-speed

CAPACITY

Fuel	50gal / 189.3L/22gal / 83.3L (auxiliary tank)
Hydraulic system	22.5gal / 85.2L

HYDRAULICS

Type	open center
Capacity	22.5gal / 85.2L

TRACTOR HITCH

Rear Type

2/1

POWER TAKE-OFF (PTO)

Rear PTO	independent
Rear RPM	540/1000

INTERNATIONAL HARVESTER 786 TIRES

The International Harvester 786, equipped with Ag front tires (9.5L-15) and Ag rear tires (18.4-34), offers excellent traction and stability for diverse agricultural tasks. The 2WD configuration provides simplicity and lower maintenance costs, but may limit performance in uneven terrain or muddy conditions compared to a 4WD system. Ideal for moderate fieldwork, this tractor is well-suited for tasks like plowing and tilling, where efficiency in power delivery is beneficial.

Ag front	9.5L-15 (2WD)
Ag rear	18.4-34

DIMENSIONS

Wheelbase	101inches / 256cm
Length	165inches / 419cm
Width	102inches / 259cm
Height (ROPS)	112inches / 284cm
Shiping weight	10,600lbs / 4808kg
Operating weight	11,590lbs / 5257kg
Ground clearance	13inches / 33cm

DIMENSIONS & TIRES

The International Harvester 786 features a 101-inch wheelbase, which provides enhanced stability during field operations and transport. Weighing between 10,600 to 11,590 pounds, it offers considerable traction and ground engagement, making it suitable for heavy-duty tasks like tillage or hauling. However, the tire configuration—9.5L-15 in the front and 18.4-34 in the rear—may necessitate careful consideration for adaptability in varying soil conditions and crop types, especially in wetter environments where wider rear tires can improve flotation.

Wheelbase	101inches / 256cm
Weight	10600 to 11590 pounds
Front tire	9.5L-15
Rear tire	18.4-34

786 SERIAL NUMBERS

Location	Rear frame on the right side.
1980	6601
1981	8936

ELECTRICAL

Ground	negative
Charging system	alternator
Charging amps	42/61 (with cab)
Batteries	2
Battery CCA	470
Battery volts	12

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