| Manufacturer | John Deere |
| Price | - |
| Model | 8320 |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
OCED TRACTOR TEST 1798 2
| Description | Diesel 16-speed 4WD May 10 - 31, 2002 Link: OCED Tractor Test 1798 file PTO performance Drawbar performance Gear 8 used for power test Gear 4 used for pull test |
| Max power | 189.39hp / 141.2kW |
| Fuel use | 12.6gal/hour / 47.7l/hour |
| Power at rated engine speed | 218.52hp / 163.0kW |
| Max pull | 25,231lbs / 11444kg |
JOHN DEERE 8320 POWER
| Engine (gross) | 263hp / 196.1kW |
| Engine (net) | 250hp / 186.4kW |
| Engine (max) | 268hp / 199.8kW |
| PTO (claimed) | 215hp / 160.3kW |
| Drawbar (tested) | 189.39hp / 141.2kW |
| PTO (tested) | 247.89hp / 184.9kW |
ENGINE DETAIL
The John Deere 8320 features a turbocharged 6-cylinder diesel engine with an 8.1L displacement and high compression ratio of 16.5:1, providing robust power outputs of 250hp to 275hp, ensuring strong performance in demanding agricultural tasks. Its electronic high-pressure common rail fuel system enhances fuel efficiency and throttle response, though it may require more precise maintenance and diagnostics. With a cooldown capacity of 34.0L, the tractor is designed for sustained high-performance operations, making it suitable for heavy-duty applications in large-scale farming scenarios.
| Description | John Deere turbocharged diesel 6-cylinder liquid-cooled inline |
| Displacement | 496ci / 8.1L |
| Bore/Stroke | 4.56x5.06inches / 116x 129mm |
| Rated Power (ECE R24) | 250hp / 186.4kW |
| Rated Power (EC 97/98) | 263hp / 196.1kW |
| Maximum Power (ECE R24) | 275hp / 205.1kW |
| Maximum Power (EC 97/68) | 268hp / 199.8kW |
| Fuel system | electronic high-pressure common rail (HPCR) |
| Air cleaner | dry with secondary element |
| Compression | 16.5:1 |
| Rated RPM | 2200 |
| Idle RPM | 900-2300 |
| Operating RPM | 1500-2200 |
| Starter volts | 12 |
| Coolant capacity | 35.9qts / 34.0L |
ENGINE OIL
The John Deere 8320 has an oil capacity of 26.4 quarts (25.0 liters), providing adequate lubrication for prolonged operational efficiency. Regular oil changes every 250 hours are essential to maintain engine performance and longevity, preventing wear and potential damage. A proactive maintenance schedule can enhance fuel efficiency and reduce the risk of costly repairs, making it ideal for intensive farming operations.
| Oil capacity | 26.4qts / 25.0L |
| Oil change | 250 h |
JOHN DEERE 8320 ENGINE
The John Deere 8320 is powered by an 8.1L 6-cylinder diesel engine, delivering robust torque and efficient power for demanding agricultural tasks. It features advanced fuel injection technology, enhancing fuel efficiency and reducing emissions, but its size may limit maneuverability in tight fields. Ideal for heavy tillage or large-area planting, the 8320 excels in various farming scenarios where durability and reliability are paramount.
| Description | John Deere 8.1L 6-cyl diesel |
TRANSMISSION
The John Deere 8320 features a full PowerShift transmission, providing 16 forward and 4 reverse gears for optimal torque management and versatility in various field conditions. Its hydraulic wet disc clutch enhances durability and reduces wear, while the Automatic PowerShift (APS) feature automates gear selection, boosting efficiency during load variations. Challenges may include a learning curve for operators unfamiliar with the single lever operation; however, the full capability to pre-select gears and monitor shifts on the display enhances user control and performance reliability.
| Transmission | John Deere PowerShift |
| Type | full power shift |
| Gears | 16 forward and 4 reverse |
| Clutch | hydraulic wet disc |
| Oil capacity | 148qts / 140.1L 158.4qts / 149.9L (ILS) |
| Description | Full power shift transmission with single shift lever with display on cab corner post. Tractor begins in 7 (forward) and 2 (reverse) on start up. Clutch pedal may be used to pre-select a gear by holding clutch and pressing lever until desired gear is reached. Automatic PowerShift (APS) allows automated shifting to match load |
SPEEDS
| Description | With 18.4R46 rear tires |
MECHANICAL
The John Deere 8320 features a robust 4x4 MFWD chassis that enhances traction and stability across varied terrains, making it ideal for heavy-duty agricultural tasks. Its hydrostatic power steering provides responsive maneuverability, while the hydraulic wet disc brakes ensure reliable stopping power under heavy loads, reducing maintenance frequency. The 16-speed full power shift transmission allows for seamless speed transitions, optimizing engine performance and fuel efficiency, crucial for extensive field operations.
| Chassis | 4x4 MFWD 4WD |
| Steering | hydrostatic power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard |
| Transmission | 16-speed full power shift |
CAPACITY
| Fuel | 135gal / 511.0L 160gal / 605.6L (optional) |
| Hydraulic system | 37gal / 140.0L 39.6gal / 149.9L (ILS) |
| Front hubs | 3.6qts / 3.4L 4.2qts / 4.0L (ILS) |
| Front diff. | 14.2qts / 13.4L |
HYDRAULICS
| Type | closed center pressure-flow compensated (PFC) |
| Capacity | 37gal / 140.0L 39.6gal / 149.9L (ILS) |
| Pressure | 2900psi / 200.0bar |
| Valves | 5 |
| SCV flow | 30gpm / 113.6lpm |
| Total flow | 33.5gpm / 126.8lpm *With standard 45cc pump 42.5gpm / 160.9lpm 57cc pump |
TRACTOR HITCH
| Rear Type | III/IIIN |
| Rear lift | 13730lbs / 6227kg 15180lbs / 6885kg |
| Front Hitch | IIIN |
| Front lift | 11000lbs / 4989kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | hydraulic wet discs |
| Rear RPM | 1000 (1.75) / 540/1000 (1.375 optional) |
| Engine RPM | 540@1975 / 1000@2200 |
JOHN DEERE 8320 TIRES
The John Deere 8320 tractor, equipped with Ag front tires (16.9R30) and Ag rear tires (18.4R46), offers superior traction and stability for heavy tillage and planting applications due to its wide rear configuration. However, the larger tires may present challenges in maneuverability in tighter spaces and increase soil compaction if not managed appropriately. Ideal for large-scale farming operations, the combination enhances power transfer while optimizing flotation in various field conditions.
| Ag front | 16.9R30 |
| Ag rear | 18.4R46 |
DIMENSIONS
| Wheelbase | 116.9inches / 296cm (4WD) 115.7inches / 293cm (ILS) 118.9inches / 302cm (long frame) |
| Length | 209.9inches / 533cm 211.9inches / 538cm (long frame) |
| Height (cab) | 120.2inches / 305cm |
| Front axle | MFWD ILS |
| Rear axle | Rack-and-pinion: 4.724 by 118.5inches / 119by 3009mm |
| 4WD Front tread | 60 to 80inches / 152to 203cm |
| ILS Front tread | 60 to 88inches / 152to 223cm |
JOHN DEERE 8320 WEIGHT
| Shipping | 21,050lbs / 9548kg 21,650lbs / 9820kg (long frame) 22,450lbs / 10183kg (ILS) |
| Operating | 20,030lbs / 9085kg (480/80R46 duals) |
| Max Drawbar | 3,900lbs / 1769kg (Cat 3 extended) 6,070lbs / 2753kg (Cat 3 short) 10,000lbs / 4536kg (Cat 4) |
DIMENSIONS & TIRES
The John Deere 8320 offers a flexible wheelbase ranging from 115.7 to 118.9 inches, enhancing stability and maneuverability for various terrain, with a robust weight of 20,030 to 22,450 pounds which contributes to traction but may limit transportability. The front and rear tire sizes (16.9R30 and 18.4R46, respectively) provide excellent ground contact and flotation, ideal for heavy tillage and pulling applications. Consideration should be given to tire selection based on soil conditions to optimize performance and reduce compaction.
| Wheelbase | 116.9inches / 296cm (4WD) 115.7inches / 293cm (ILS) 118.9inches / 302cm (long frame) |
| Weight | 20030 to 22450 pounds |
| Front tire | 16.9R30 |
| Rear tire | 18.4R46 |
8320 SERIAL NUMBERS
| Location | Rear of tractor. |
| 2002 | 1001 |
| 2003 | 10001 |
| 2004 | 20001 |
| 2005 | 30001 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 150 |
| Batteries | 2 |
| Battery CCA | 925 |
| Battery volts | 12 |