| Manufacturer |
International Harvester |
| Price |
70,500(USD) |
| Model |
6788 |
| Equipment Type |
- |
| Factory |
Rock Island, Illinois, USA |
NEBRASKA TRACTOR TEST 1377 2
| Description |
Diesel 12-speed 4WD November 5 - 17, 1980 Link: Nebraska Tractor Test 1377 file PTO performance Drawbar performance Gear 3-Low-Direct used for power test Gear 1-Low-Direct used for pull test |
| Power at rated engine speed |
170.57hp / 127.2kW |
| Fuel use |
10.7gal/hour / 40.5l/hour |
| Power at rated PTO speed |
166.39hp / 124.1kW |
| Max power |
142.05hp / 105.9kW |
| Max pull |
19069lbs / 8649kg |
INTERNATIONAL HARVESTER 6788 POWER
| Engine |
200hp / 149.1kW |
| Drawbar (claimed) |
142hp / 105.9kW |
| PTO (claimed) |
170hp / 126.8kW |
| Drawbar (tested) |
142.05hp / 105.9kW |
| PTO (tested) |
170.57hp / 127.2kW |
ENGINE DETAIL
The International Harvester 6788 features a robust DT 466B turbocharged diesel engine, providing 200 hp at a rated RPM of 2500, efficient for demanding agricultural tasks. Its significant oil capacity of 20 quarts and coolant capacity of 34 quarts ensure optimal engine performance under heavy loads, but frequent maintenance checks are essential to prevent overheating and wear. This tractor excels in scenarios requiring high torque at low RPMs, making it ideal for plowing or hauling, but potential fuel consumption at full power should be considered in operational cost analysis.
| Description |
International Harvester DT 466B turbocharged diesel 6-cylinder liquid-cooled |
| Displacement |
466ci / 7.6L |
| Bore/Stroke |
4.30x5.35inches / 109x 136mm |
| Power |
200hp / 149.1kW |
| Rated RPM |
2500 |
| Oil capacity |
20qts / 18.9L |
| Coolant capacity |
34qts / 32.2L |
INTERNATIONAL HARVESTER 6788 ENGINE
The International Harvester 6788 features a robust 7.6L 6-cylinder diesel engine, providing substantial torque and horsepower for demanding agricultural tasks. Key advantages include its superior fuel efficiency and high towing capacity, making it suitable for heavy-duty operations like plowing and transporting large implements. However, potential challenges include maintenance complexity and the availability of replacement parts, which may impact long-term operational costs.
| Description |
International Harvester 7.6L 6-cyl diesel |
TRANSMISSION
The International Harvester 6788 tractor's two-range power shift transmission allows for seamless gear transitions without clutch engagement between specific gear pairs, enhancing operational efficiency during high-demand tasks. The synchronized shift feature for particular gear pairs ensures smooth transitions, reducing stress on the drivetrain and improving overall longevity. With an oil capacity of 94.5 quarts, proper maintenance is crucial for optimal performance and gear shift reliability, particularly in extensive fieldwork scenarios.
| Type |
two-range power shift |
| Gears |
12 forward and 6 reverse |
| Oil capacity |
94.5qts / 89.4L |
| Description |
Left lever selects high, low, or reverse range. Right lever selects gear. On-the-move power shift without the clutch between gear pairs 1/2, 3/4, and 5/6. Synchronized shift (with the clutch) from 2-to-3 and 4-to-5 |
SPEEDS
| Description |
With 18.4-38 tires |
MECHANICAL
The International Harvester 6788 features a robust articulated 4x4 chassis for superior maneuverability in various terrains, making it ideal for farming operations requiring high traction and stability. Its 12-speed two-range power shift transmission enhances operational efficiency and flexibility, allowing seamless transitions across different speeds and workloads. The standard cab with climate control offers operator comfort, although the optional western finish may appeal to users seeking aesthetic enhancements.
| Chassis |
4x4 articulated 4WD |
| Steering |
articulated power |
| Cab |
Cab standard with burgundy finish, heat, and air-conditioning. Optional western finish interior |
| Transmission |
12-speed two-range power shift |
CAPACITY
| Fuel |
89gal / 336.9L 139gal / 526.1L |
| Hydraulic system |
23.6gal / 89.3L |
HYDRAULICS
| Capacity |
23.6gal / 89.3L |
| Valves |
2 to 4 |
| Pump flow |
18gpm / 68.1lpm |
| Steering flow |
12gpm / 45.4lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
1000 |
INTERNATIONAL HARVESTER 6788 TIRES
The International Harvester 6788 tractor features dual 18.4-38 agricultural tires, providing enhanced traction and stability for fieldwork, especially in heavy soil conditions. This setup is advantageous for pulling large implements and flooding situations due to its low ground pressure. However, it may present challenges in tight maneuvering spaces and increase soil compaction in certain conditions.
| Ag front |
18.4-38 |
| Ag rear |
18.4-38 |
DIMENSIONS
| Wheelbase |
110inches / 279cm |
| Length |
228.3inches / 579cm |
| Width |
112inches / 284cm |
| Shipping weight |
16920lbs / 7674kg |
| Ground clearance |
28.4inches / 72cm |
INTERNATIONAL HARVESTER 6788 HEIGHT
| Hood |
79.9inches / 202cm |
| Cab |
114.1inches / 289cm |
| Exhaust |
125.4inches / 318cm |
DIMENSIONS & TIRES
The International Harvester 6788 features a 110-inch wheelbase, providing stability during operation, especially in field conditions. Weighing 16,920 lbs (7,674 kg) enhances its traction and reduces slippage on soil surfaces, making it suitable for heavy-duty tasks like plowing or tilling. However, the 18.4-38 tire size may limit flotation in wet conditions; selecting the right tire pressure becomes critical to avoid soil compaction.
| Wheelbase |
110inches / 279cm |
| Weight |
16920lbs / 7674kg |
| Front tire |
18.4-38 |
| Rear tire |
18.4-38 |
6788 SERIAL NUMBERS
| Location |
transmission housing, right side |
| 1981 |
8801 |
| 1982 |
8810 |
| 1983 |
8840 |
| 1984 |
8871 |
| 1985 |
8946 |
