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) |
can not find a parts and service manual for a john deere tractor model 990. please help.
I haven’t had to get any parts for the last two years. Getting ready to get some pm parts from John Deere dealer. I found out that the filters are better and around the same price as NAPA. NAPA filters are smaller on oil and air filters. But I have found out most of the parts people have a hard time looking the parts up. Check your stuff out before you leave the place. They have gave me the wrong parts many times. It’s hard taking the time to run a couple hundred miles to get the correct part when I could be back on the tractor.