International Harvester 4186 Specs ( 1976-1978 )
Overview
The International Harvester 4186 is a four-wheel drive farm tractor produced between 1976 and 1978 in Rock Island, Illinois. It features a 7.1L turbocharged 6-cylinder diesel engine rated at 2400 RPM and an 8-speed gear transmission with a 1000-RPM independent rear PTO.
Ideal Applications
Nebraska Test Performance:
In Nebraska Tractor Test 1116, this model demonstrated a maximum drawbar pull of 19,434 lbs and achieved 150.63 hp at the PTO at rated engine speed.
Drivetrain and Mechanical Layout:
The 4WD chassis is equipped with hydraulic power steering, hydraulic expanding shoe brakes, and a transmission offering 8 forward and 4 reverse gears.
Operational Capacities:
The tractor is built with a 102-inch wheelbase, a 100-gallon fuel tank, and a Category III/II rear hitch supported by an 18 gpm hydraulic pump flow.
Production
| Description | Built in Rock Island, Illinois, USA / Original price was $32,500 in 1978 |
|---|---|
| Drive type | Four-wheel Drive (4WD) tractor |
| Manufacturer | International Harvester |
Engine
| Engine type | International Harvester 7.1L 6-cyl diesel |
|---|---|
| Fuel tank | 100 gal (378.5 L) |
| Bore/Stroke | 4.30x5.00 inches (109 x 127 mm) |
| Description | International Harvester DT-436 / turbocharged diesel / 6-cylinder / liquid-cooled |
| Displacement | 436 ci (7.1 L) |
| Fuel system | direct injection |
| Rated RPM | 2400 |
| Starter volts | 12 |
| Drawbar (claimed) | 130 hp (96.9 kW) |
| Drawbar (tested) | 127.55 hp (95.1 kW) |
| PTO (claimed) | 150 hp (111.9 kW) |
| PTO (tested) | 150.63 hp (112.3 kW) |
Transmission
| Clutch | 355.6mm dry disc |
|---|---|
| Description | Four gears in two ranges, plus reverse range. |
| Gears | 8 forward and 4 reverse |
| Transmission type | 8-speed gear |
| Type | gear |
Mechanical
| Cab | Cab standard |
|---|---|
| Description | Hydraulic expanding shoe brakes |
| Drive | 4x4 4WD |
| Steering | hydraulic power |
Hydraulics
| Pump flow | 18 gpm (68.1 lpm) |
|---|---|
| Type | open center |
| Valves | 2 |
Hitch
| Rear Type | III/II |
|---|
PTO
| Engine RPM | 1000@1159 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 1000 |
Dimensions & Tires
| Front tread | 80 inches (203 cm) |
|---|---|
| Height | 139 inches (353 cm) |
| Length | 194 inches (492 cm) |
| Max weight | 22400 lbs (10160 kg) |
| Rear tread | 80 inches (203 cm) |
| Shipping weight | 15900 lbs (7212 kg) |
| Wheelbase | 102 inches (259 cm) |
| Front tire | 23.1-26 |
| Rear tire | 23.1-26 |
| Weight | 15900 lbs (7212 kg) |
| Wheelbase | 102 inches (259 cm) |
| Ag front | 23.1-26 |
| Ag rear | 23.1-26 |
Nebraska Tractor Test 1116
| Description | Diesel 8-speed 4WDNovember 1 - December 6, 1972Link: Nebraska Tractor Test 1116 file / PTO performance / Drawbar performance / Gear 4-Low used for power test. / Gear 1-Low used for pull test. |
|---|---|
| Fuel use | 9.9 gal/hour (37.5 l/hour) / 9.1 gal/hour (34.4 l/hour) |
| Max power | 127.55 hp (95.1 kW) |
| Max pull | 19,434 lbs (8815 kg) |
| Power at rated engine speed | 150.63 hp (112.3 kW) |
| Power at rated PTO speed | 152.72 hp (113.9 kW) |
References
| Description | 1978 Buyer's Guide published by International Harvester |
|---|