John Deere
John Deere 8120T
The John Deere 8120T is an agricultural crawler tractor produced from 2002 to 2005 as part of the 8020 Series. It features a John Deere 8.1L 6-cylinder turbocharged diesel engine delivering up to 230 hp gross power. The tractor uses a 16-speed full power shift John Deere PowerShift transmission and has electro-hydraulic power steering with hydraulic wet disc brakes. It has a fuel capacity of 130 gallons and a hydraulic system capacity of 65 gallons. The 8120T is equipped with 24-inch tracks as standard and offers various track width options. It was built in Waterloo, Iowa, USA, and includes a standard cab. The tractor's rear hitch is a category III/IIIN with a lift capacity of 15,180 lbs, and it has an independent 1000 RPM rear PTO. Dimensions include a wheelbase of 89 inches (120 inches wide track option), length of 207 inches (219.6 inches with front weights), and a shipping weight of 25,950 lbs.
Power208 hp
Founded2002 - 2005
Model8120T
Technical Specifications
Detailed specifications and technical data for John Deere 8120T
Power
| Engine (max) | 230 hp (171.5 kW) |
|---|---|
| Engine (net) | 200 hp (149.1 kW) |
| PTO (claimed) | 170 hp (126.8 kW) |
| Engine (gross) | 208 hp (155.1 kW) |
Engine
| Type | turbocharged diesel, 6-cylinder, liquid-cooled inline |
|---|---|
| Model | John Deere 8.1L 6-cyl diesel |
| Idle RPM | 900-2300 |
| Rated RPM | 2200 |
| Bore/Stroke | 4.56x5.06 inches (116 x 129 mm) |
| Compression | 16.5:1 |
| Displacement | 496 ci (8.1 L) |
| Oil capacity | 22.7 qts (21.5 L) |
| Operating RPM | 1500-2200 |
| Starter volts | 12 |
| Coolant capacity | 35.9 qts (34.0 L) |
| Rated Power (net) | 200 hp (149.1 kW) |
| Maximum Power (net) | 220 hp (164.1 kW) |
| Oil change interval | 250 h |
| Rated Power (gross) | 208 hp (155.1 kW) |
| Maximum Power (gross) | 230 hp (171.5 kW) |
Tracks
| 16-inch width | 16 inches (40 cm) |
|---|---|
| 18-inch width | 18 inches (45 cm) |
| 24-inch width | 24 inches (60 cm) |
| 30-inch width | 30 inches (76 cm) |
| 16-inch area on ground | 2848 in² (1.8 m²) |
| 18-inch area on ground | 3204 in² (2.1 m²) |
| 24-inch area on ground | 4272 in² (2.8 m²) |
| 30-inch area on ground | 5340 in² (3.4 m²) |
| 16-inch length on ground | 89 inches (226 cm) |
| 18-inch length on ground | 89 inches (226 cm) |
| 24-inch length on ground | 89 inches (226 cm) |
| 30-inch length on ground | 89 inches (226 cm) |
Capacity
| Fuel | 130 gal (492.1 L) |
|---|---|
| Hydraulic system | 65 gal (246.0 L) |
Variants
| 8120 | wheeled tractor |
|---|---|
| 8120T | crawler |
Dimensions
| Length | 207 inches (525 cm) |
|---|---|
| Wheelbase | 89 inches (226 cm) |
| Max weight | 31,500 lbs (14288 kg) |
| Width (max) | 150 inches (381 cm) |
| Width (min) | 103.7 inches (263 cm) |
| Height (cab) | 122.9 inches (312 cm) |
| Shipping weight | 25,950 lbs (11770 kg) |
| Clearance (drawbar) | 17.7 inches (44 cm) |
| Clearance (rear axle) | 21.7 inches (55 cm) |
| Length (with front weights) | 219.6 inches (557 cm) |
| Wheelbase (wide track option) | 120 inches (304 cm) |
Electrical
| Ground | negative |
|---|---|
| Batteries | 2 |
| Battery CCA | 925 |
| Battery volts | 12 |
| Charging amps | 150 |
| Charging system | alternator |
Hydraulics
| Type | closed center pressure flow compensated (PFC) |
|---|---|
| Valves | 5 |
| Capacity | 65 gal (246.0 L) |
| Pressure | 2900 psi (200.0 bar) |
| Pump flow | 30 gpm (113.6 lpm) |
| Total flow | 33.5 gpm (126.8 lpm) |
| Optional flow | 42.5 gpm (160.9 lpm) |
Mechanical
| Cab | standard |
|---|---|
| Drive | crawler |
| Brakes | Hydraulic wet disc brakes |
| Steering | electro-hydraulic power |
Production
| Type | Agricultural Crawler tractor |
|---|---|
| Series | 8020 Series |
| Built in | Waterloo, Iowa, USA |
| Years produced | 2002 - 2005 |
Transmission
| Type | full power shift |
|---|---|
| Gears | 16 forward and 4 reverse |
| Model | John Deere PowerShift |
| Notes | Fourth reverse at 1600 RPM. |
| Oil capacity | 260 qts (246.1 L) |
Tractor hitch
| Rear Type | III/IIIN |
|---|---|
| Rear lift capacity | 15,180 lbs (6885 kg) |
Serial Numbers
| Location | Rear of tractor |
|---|
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 1000 (1-3/4) |
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