The John Deere 8400 is a 4WD row-crop tractor from the 8000/8000T series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1995 to 1999. The JD 8400 is equipped with a 8.1 L (496.0 cu·in) six-cylinder diesel engine and a full power shift with hydraulic wet disc clutch transmission with 16 forward and 4 reverse gears.
The JD 8400 row-crop tractor used the John Deere engine. It is a 8.1 L, 8,128 cm2, (496.0 cu·in) six-cylinder turbocharged aftercooled diesel engine with 116.0 mm (4.57 in) of the cylinder bore and 129.0 mm (5.08 in) of the piston stroke. The compression ratio rating is 15.1:1 (1995-1996) or 15.8:1 (1997-1999). This engine produced 228.2 PS (167.8 kW; 225.0 HP) at 2,200 rpm of PTO output power.
The John Deere 8400 is equipped with power steering, differential hydraulic wet disc brakes, CommandView Cab, and 511.0 liters (135 US gal.; 112.4 Imp. gal) fuel tank.
John Deere 8400 Specifications
| General Specifications | |
| Model | John Deere 8400 |
| Length | 5,240 mm (206.3 in) |
| Width | – |
| Height | 3,050 mm (120.1 in) |
| Wheel base | 2,940 mm (115.7 in) |
| Ground clearance | 580 mm (23.0 in) |
| Weight (operating) | 8,705 kg (19,191 lbs) |
| Fuel tank capacity | 511.0 liters (135 US gal.; 112.4 Imp. gal) |
| Battery | Two 12V, CCA 925A |
| Cabin type | CommandView Cab (standard) |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 8.1 L, 8,128 cm2, (496.0 cu·in) |
| Bore and stroke | 116.0 mm X 129.0 mm (4.57 in X 5.08 in) |
| Compression ratio | 1995-1996: 15.1:1 1997-1999: 15.8:1 |
| Horsepower | 228.2 PS (167.8 kW; 225.0 HP) at 2,200 rpm |
| Starter | Electric |
| Oil capacity: | 28.0 L (29.6 US. qt, 24.6 Imp. qt.) |
| Coolant capacity: | 28.4 L (30 US. qt, 25 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 MFWD 4WD |
| Steering type | Power |
| Brakes | Differential hydraulic wet disc |
| Final drive | Inboard planetary |
| Differential lock | Electro-hydraulic |
| Transmission model | John Deere PowerShift |
| Transmission type | Full power shift with hydraulic wet disc clutch |
| Gears | 16 forward and 4 reverse |
| Speed | Forward: 34.0 kmh (21.1 mph) Reverse: 10.4 kmh (6.5 mph) |
| Transmission oil capacity | 140.1 L (37 US. gal, 30.8 Imp. gal.) |
| Tires | |
| Front tires | Ag: 14.9R34 |
| Rear tires | Ag: 18.4R46 |
| Three-Point Hitch | |
| Category | 3/3N |
| Control type | Electro-hydraulic draft sensing |
| Lift capacity (at ends) | 5,310 kg (11,710 lbs) 7,100 kg (15,650 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 1000, 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center pressure-flow compensated (PFC) |
| Hydraulic capacity | 140.0 L (37 US. gal, 30.8 Imp. gal.) |
| Pressure | 2900 psi (199.9 bar) |
| Valves | 3 to 5 |
| SCV flow | 30.0 gpm (113.6 lpm) |
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