| Manufacturer |
John Deere |
| Price |
- |
| Model |
8520 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Waterloo, Iowa, USA |
OCED TRACTOR TEST 1801 2
| Description |
Diesel 16-speed 4WD May 2 - 31, 2002 Link: OCED Tractor Test 1801 file PTO performance Drawbar performance Gear 8 used for power test Gear 3 used for pull test |
| Max power |
225.13hp / 167.9kW |
| Fuel use |
14.9gal/hour / 56.4l/hour |
| Power at rated engine speed |
256.49hp / 191.3kW |
| Max pull |
35,611lbs / 16153kg |
JOHN DEERE 8520 POWER
| Engine (gross) |
305hp / 227.4kW |
| Engine (net) |
295hp / 220.0kW |
| Engine (max) |
335hp / 249.8kW |
| PTO (claimed) |
255hp / 190.2kW |
| Drawbar (tested) |
225.13hp / 167.9kW |
| PTO (tested) |
292.88hp / 218.4kW |
ENGINE DETAIL
The John Deere 8520 features a robust turbocharged 6-cylinder diesel engine with a displacement of 8.1L, producing a rated power of 295hp (ECE R24) and a maximum power of 325hp, making it suitable for heavy-duty agricultural tasks. Its advanced electronic high-pressure common rail (HPCR) fuel system enhances fuel efficiency and power delivery, while the dry air cleaner reduces maintenance frequency. However, challenges may arise in extreme conditions where cooler air is necessary, and the 16.5:1 compression ratio requires high-quality fuel for optimal performance.
| 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) |
295hp / 220.0kW |
| Rated Power (EC 97/98) |
305hp / 227.4kW |
| Maximum Power (ECE R24) |
325hp / 242.4kW |
| Maximum Power (EC 97/68) |
335hp / 249.8kW |
| 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 8520 has an oil capacity of 32.7 quarts (30.9 liters), which is essential for efficient engine lubrication and longevity, especially during extended operation. With an oil change interval of 250 hours, it is crucial to monitor engine performance to prevent excessive wear and maintain optimal fuel efficiency. In high-demand scenarios, such as heavy tillage or transportation, adhering to this maintenance schedule can prevent costly downtime and ensure reliable tractor operation.
| Oil capacity |
32.7qts / 30.9L |
| Oil change |
250 h |
JOHN DEERE 8520 ENGINE
The John Deere 8520 features an 8.1L 6-cylinder diesel engine known for its high torque output, which enhances heavy-duty performance, making it ideal for agricultural applications like plowing and tilling. Its robust powertrain allows for efficient fuel consumption, but potential challenges may include higher maintenance costs due to the complexity of the engine. In scenarios requiring consistent torque and power, such as large-scale farming operations, the 8520 stands out as a reliable choice.
| Description |
John Deere 8.1L 6-cyl diesel |
TRANSMISSION
The John Deere 8520 features a full PowerShift transmission, providing 16 forward and 4 reverse gears that enhance operational versatility and efficiency. The hydraulic wet disc clutch enables smooth power delivery, while the Automatic PowerShift (APS) optimizes shifting based on load, reducing operator strain in varied conditions. However, operators should be aware of the initial startup gear settings (7 forward and 2 reverse), as they may require adjustment for different tasks.
| Transmission |
John Deere PowerShift |
| Type |
full power shift |
| Gears |
16 forward and 4 reverse |
| Clutch |
hydraulic wet disc |
| Oil capacity |
158.4qts / 149.9L |
| 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 8520 features a robust 4x4 MFWD system, providing excellent traction on varied terrains, making it ideal for heavy-duty agricultural tasks. Its hydrostatic power steering ensures precise maneuverability, while the hydraulic wet disc brakes enhance stopping power and durability under heavy loads. The 16-speed full power shift transmission allows for seamless gear changes, optimizing performance and efficiency during operation.
| Chassis |
4x4 MFWD 4WD |
| Steering |
hydrostatic power |
| Brakes |
hydraulic wet disc |
| Cab |
Cab standard |
| Transmission |
16-speed full power shift |
CAPACITY
| Fuel |
160gal / 605.6L |
| Hydraulic system |
39.6gal / 149.9L |
| Front hubs |
4.2qts / 4.0L |
| Front diff. |
14.2qts / 13.4L |
HYDRAULICS
| Type |
closed center pressure-flow compensated (PFC) |
| Capacity |
39.6gal / 149.9L |
| 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 |
15180lbs / 6885kg 17300lbs / 7847kg |
| Front Hitch |
IIIN |
| Front lift |
11000lbs / 4989kg |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Clutch |
hydraulic wet discs |
| Rear RPM |
1000 (1.75) |
| Engine RPM |
1000@2200 |
JOHN DEERE 8520 TIRES
The John Deere 8520 features 18.4R46 Ag rear tires, which enhance traction and stability, making it ideal for heavy tillage and high-draft applications. A potential challenge is reduced ground clearance compared to larger tires, which may affect performance in uneven terrain. However, the tire size promotes improved floatation in muddy or loose soil conditions, optimizing field productivity.
DIMENSIONS
| Wheelbase |
117.7inches / 298cm |
| Length |
211.9inches / 538cm |
| Height (cab) |
122.2inches / 310cm |
| Front axle |
Independent Link Suspension |
| 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 8520 WEIGHT
| Shipping |
23,050lbs / 10455kg |
| Operating |
23,800lbs / 10795kg (480/80R46 duals) |
| Max Drawbar |
4,900lbs / 2222kg 10,000lbs / 4536kg (with HD support) |
DIMENSIONS & TIRES
The John Deere 8520 features a wheelbase of 117.7 inches, promoting stability during heavy field tasks. Weighing between 23,050 to 23,800 pounds, it offers robust power for tilling and plowing, but users should consider its weight for transport purposes on public roads. The rear tire size of 18.4R46 enhances traction and flotation, making it ideal for wet conditions or when working in soft soils.
| Wheelbase |
117.7inches / 298cm |
| Weight |
23050 to 23800 pounds |
| Rear tire |
18.4R46 |
8520 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 |
