The International Harvester 3788 is a four-wheel drive tractor from the 30 2+2 series. This tractor was manufactured by International Harvester from 1980 to 1981. The IH 3788 is equipped with a 7.6 L (466.0 cu·in) six-cylinder diesel engine and a two-speed power shift with dry disc clutch transmission with 12 forward and 6 reverse gears.
The International 3788 four-wheel drive used the International Harvester engine. It is a 7.6 L, 7,636 cm2, (466.0 cu·in) six-cylinder turbocharged diesel engine with 109.0 mm (4.29 in) of the cylinder bore and 136.0 mm (5.35 in) of the piston stroke. This engine produced 148.1 PS (108.9 kW; 146.0 HP) at 2,500 rpm of output power.
The International Harvester 3788 is equipped with hydrostatic power steering, hydraulic wet disc brakes, cab (standard), and 340.7 liters (90 US gal.; 74.9 Imp. gal) fuel tank.
International Harvester 3788 Specifications
| General Specifications | |
| Model | International Harvester 3788 |
| Length | 5,790 mm (228 in) |
| Width | – |
| Height | 2,940 mm (115.7 in) |
| Wheel base | 2,790 mm (109.8 in) |
| Weight | 8,445 kg (18,618 lbs) |
| Fuel tank capacity | 340.7 liters (90 US gal.; 74.9 Imp. gal) |
| Battery | 12V |
| Cabin type | Cab (standard) |
| Engine | |
| Engine model | International Harvester |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 7.6 L, 7,636 cm2, (466.0 cu·in) |
| Bore and stroke | 109.0 mm X 136.0 mm (4.29 in X 5.35 in) |
| Horsepower (drawbar (claimed)) | 148.1 PS (108.9 kW; 146.0 HP) at 2,500 rpm |
| Starter | Electric |
| Coolant capacity: | 32.2 L (34 US. qt, 28.3 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 articulated 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet disc |
| Transmission model | – |
| Transmission type | Two-speed power shift with dry disc clutch |
| Gears | 12 forward and 6 reverse |
| Tires | |
| Front tires | Ag: 18.4-38 |
| Rear tires | Ag: 18.4-38 |
| Three-Point Hitch | |
| Category | III |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center |
| Valves | 2 |
| Pump flow | 12.0 gpm (45.4 lpm) |