| Manufacturer |
International Harvester |
| Price |
57,000(USD) |
| Model |
3788 |
| Equipment Type |
- |
| Factory |
|
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 3788 POWER
| Drawbar (claimed) |
146hp / 108.9kW |
| PTO (claimed) |
170.57hp / 127.2kW |
| Drawbar (tested) |
142.05hp / 105.9kW |
| PTO (tested) |
170.57hp / 127.2kW |
ENGINE DETAIL
The International Harvester 3788 features a DT-466B turbocharged diesel engine with a 7.6L displacement, delivering robust power at 2500 RPM, ideal for heavy-field applications. Its significant bore and stroke measurements (4.30x5.35 inches) provide ample torque, optimizing performance in demanding agricultural tasks. However, the engine's complexity may increase maintenance challenges, especially regarding turbo components and coolant management, necessitating routine checks to ensure longevity.
| Description |
International Harvester DT-466B turbocharged diesel 6-cylinder liquid-cooled |
| Displacement |
466ci / 7.6L |
| Bore/Stroke |
4.30x5.35inches / 109x 136mm |
| Rated RPM |
2500 |
| Idle RPM |
780-2750 |
| Starter volts |
12 |
| Oil capacity |
20qts / 18.9L |
| Coolant capacity |
34qts / 32.2L |
INTERNATIONAL HARVESTER 3788 ENGINE
The International Harvester 3788 features a robust 7.6L 6-cylinder diesel engine, providing considerable torque and power for heavy-duty applications. With a substantial 90-gallon fuel tank, it offers extended operational duration, making it ideal for long-duration fieldwork or large-scale agricultural tasks. However, the vehicle's weight and size may present challenges in maneuverability in tight spaces.
| Description |
International Harvester 7.6L 6-cyl diesel |
| Fuel tank |
90gal / 340.7L |
TRANSMISSION
The International Harvester 3788 features a two-range power shift transmission with 12 forward and 6 reverse gears, providing flexibility in various agricultural applications. The torque amplifier enhances power delivery, improving efficiency during heavy-haul tasks; however, the hydraulic dry disc clutch may require careful maintenance to ensure optimal performance. This setup is advantageous for operators needing varied speed control and robust torque in diverse field conditions, but it could present challenges in terms of clutch wear under heavy usage.
| Transmission |
Torque Amplifier |
| Type |
two-range power shift |
| Gears |
12 forward and 6 reverse |
| Clutch |
356mm hydraulic dry disc |
SPEEDS
| Description |
With 18.4-38 rear tires |
MECHANICAL
The International Harvester 3788 features a 4x4 articulated 4WD chassis, providing enhanced maneuverability and traction on varied terrains, ideal for both agricultural and heavy-duty applications. Its hydrostatic power steering ensures responsive handling, while the hydraulic wet disc brakes enhance safety by providing reliable stopping power under load. The 12-speed two-range power shift transmission allows for optimal speed and torque management, making it suitable for tasks requiring precise control, such as tilling or hauling.
| Chassis |
4x4 articulated 4WD |
| Steering |
hydrostatic power |
| Brakes |
hydraulic wet disc |
| Cab |
Cab standard |
| Transmission |
12-speed two-range power shift |
HYDRAULICS
| Type |
closed center |
| Valves |
2 |
| Pump flow |
12gpm / 45.4lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
1000 |
| Engine RPM |
1000@2100 |
INTERNATIONAL HARVESTER 3788 TIRES
The International Harvester 3788 tractor features 18.4-38 tires on both front and rear, providing substantial traction and stability for field operations, particularly in tillage and planting scenarios. This tire configuration can enhance power transfer and load-bearing capacity but may pose challenges in tight spaces due to its width. Additionally, the tractor's design should consider weight distribution to prevent soil compaction during extended use.
| Ag front |
18.4-38 |
| Ag rear |
18.4-38 |
DIMENSIONS
| Wheelbase |
110inches / 279cm |
| Length |
228inches / 579cm |
| Width |
101.6inches / 258cm |
| Height (cab) |
115.8inches / 294cm |
| Clearance (front axle) |
23.2inches / 58cm |
| Clearance (rear axle) |
26.7inches / 67cm |
INTERNATIONAL HARVESTER 3788 WEIGHT
| Shipping |
16520lbs / 7493kg |
| Operating |
18620lbs / 8446kg |
| Max capacity |
23500lbs / 10659kg |
DIMENSIONS & TIRES
The International Harvester 3788 tractor features a wheelbase of 110 inches (279 cm), providing stability during operation and making it suitable for various field tasks. Weighing between 16,520 to 18,620 pounds, it delivers significant traction, particularly with its large 18.4-38 tires, which enhance ground contact and minimize soil compaction. However, the weight range may necessitate careful consideration of transport capabilities and compatibility with lighter implements.
| Wheelbase |
110inches / 279cm |
| Weight |
16520 to 18620 pounds |
| Front tire |
18.4-38 |
| Rear tire |
18.4-38 |
3788 SERIAL NUMBERS
| Location |
Right side of tractor frame, by rear axle |
| 1980 |
8801 |
| 1981 |
10866 |
ELECTRICAL
| Ground |
negative |
| Charging system |
alternator |
| Charging amps |
72/100 |
| Batteries |
2 |
| Battery volts |
12 |
