The John Deere 990 is a 2WD or 4WD compact utility tractor manufactured by the John Deere from 2000 to 2007. The JD 990 is equipped with a 2.0 L four-cylinder diesel engine and partially synchronized transmission with 9 forward and 3 reverse gears.
The John Deere 990 compact utility tractor used the Yanmar 4TNE84 engine. It is a 2 L, 1,995 cm2, (121.7 cu·in) four-cylinder natural aspirated diesel engine with 84.0 mm (3.31 in) of the cylinder bore and 90.0 mm (3.54 in) of the piston stroke. This engine produced 40.9 PS (30.1 kW; 40.4 HP) at 2,700 rpm of maximum output power.
The John Deere 990 is equipped with power steering, wet disc brakes, open operator station with two-post ROPS and 32.2 liters (8.5 US gal.; 7.1 Imp. gal) fuel tank.
Following attachments are available for the JD 990 compact utility tractor:
- John Deere 430 loader
- John Deere 8B backhoe
John Deere 990 Specifications
| General Specifications | |
| Model | John Deere 990 |
| Length | 3,120 mm (122.8 in) |
| Width | 2,130 mm (83.9 in) |
| Height | – |
| Wheel base | 1,750 mm (68.9 in) |
| Weight | 1,180 kg (2,601 lbs) |
| Fuel tank capacity | 32.2 liters (8.5 US gal.; 7.1 Imp. gal) |
| Battery | 12V, CCA 650A |
| Cabin type | Open operator station with two-post ROPS |
| Engine | |
| Engine model | Yanmar 4TNE84 |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 2.0 L, 1,995 cm2, (121.7 cu·in) |
| Bore and stroke | 84.0 mm X 90.0 mm (3.31 in X 3.54 in) |
| Compression ratio | 18.0:1 |
| Horsepower | 40.9 PS (30.1 kW; 40.4 HP) at 2,700 rpm |
| Starter | Electric |
| Oil capacity: | 5.3 L (5.6 US. qt, 4.7 Imp. qt.) |
| Coolant capacity: | 5.8 L (6.1 US. qt, 5.1 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Power |
| Brakes | Wet disc |
| Transmission model | Collar Shift |
| Transmission type | Partially synchronized |
| Gears | 9 forward and 3 reverse |
| Speed | Forward: 19.0 kmh (11.8 mph) Reverse: 12.4 (7.7 mph) |
| Transmission oil capacity | 20.8 L (5.5 US. gal, 4.6 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.5-16 (2WD), 8-16 (4WD) |
| Rear tires | Ag: 14.9-24 |
| Three-Point Hitch | |
| Caterogy | I |
| Control type | – |
| Lift capacity (at 610 mm/24 in) | 713 kg (1,572 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Live with two stage clutch |
| Rear PTO spped | 540 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Hydraulic capacity | 20.8 L (21.98 US. qt, 18.3 Imp. qt.) |
| Pressure | 2262 psi (156 bar) |
| Pump flow | 8.5 gpm (32.2 lpm) |
| Steering flow | 4.5 gpm (17 lpm) |
| Total flow | 13.0 gpm (49.2 lpm) |