| Manufacturer | John Deere |
| Price | - |
| Model | 7520 |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
OCED TRACTOR TEST 1818 2
| Description | Diesel IVT 4WD March 25 - April 17, 2003 Link: OCED Tractor Test 1818 file PTO performance Drawbar performance Pull at 4-kph |
| Max power | 110.88hp / 82.7kW |
| Fuel use | 7.4gal/hour / 28.0l/hour |
| Power at rated engine speed | 125.75hp / 93.8kW |
| Max pull | 13,634lbs / 6184kg |
JOHN DEERE 7520 POWER
| Engine | 150hp / 111.9kW |
| PTO (claimed) | 125hp / 93.2kW |
| Drawbar (tested) | 110.88hp / 82.7kW |
| PTO (tested) | 143.97hp / 107.4kW |
ENGINE DETAIL
The John Deere 7520 features a robust 6.8L PowerTech turbocharged diesel engine, delivering 150 hp at a rated speed of 2100 RPM and a high torque of 454 lb-ft at 1503 RPM, ideal for heavy-duty agricultural applications. Its liquid-cooled system helps maintain optimal operating temperatures, while the substantial oil (22.2 quarts) and coolant (29.6 quarts) capacities promote prolonged service intervals. However, users should be mindful of its idle RPM range (850-2250), which requires careful monitoring to prevent engine strain during low-speed operations.
| Description | John Deere Power Tech 6068HF475 turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 414ci / 6.8L |
| Bore/Stroke | 4.19x5.00inches / 106x 127mm |
| Power | 150hp / 111.9kW |
| Rated RPM | 2100 |
| Idle RPM | 850-2250 |
| Operating RPM | 1300-2100 |
| Torque | 454lb-ft / 615.6Nm |
| Torque RPM | 1503 |
| Firing order | 1-5-3-6-2-4 |
| Starter volts | 12 |
| Starter power | 4.1hp / 3.1kW |
| Oil capacity | 22.2qts / 21.0L |
| Coolant capacity | 29.6qts / 28.0L |
JOHN DEERE 7520 ENGINE
The John Deere 7520 is powered by a robust 6.8L 6-cylinder diesel engine, providing significant torque for heavy-duty applications. Its 66-gallon fuel tank allows for extended operation intervals, reducing downtime during intensive tasks. However, the weight and size may pose challenges in maneuverability on smaller fields or tight spaces.
| Description | John Deere 6.8L 6-cyl diesel |
| Fuel tank | 66gal / 249.8L |
TRANSMISSIONS OVERVIEW
The John Deere 7520 features a 16-speed partial power shift transmission, allowing for efficient gear transitions and tailored performance based on load conditions. Additionally, it offers a 24-speed option that enhances operational versatility, ideal for tasks requiring precise speed adjustments such as plowing or heavy tilling. However, users should consider potential complexity in transmission management, which may require more operator training to maximize efficiency.
| Description | 16-speed partial power shift 24-speed |
TRANSMISSION 1
The John Deere 7520 features a PowrQuad partial power shift transmission with 16 forward and reverse gears, offering excellent versatility for varied farming tasks. Its four power shift speeds across four ranges enable efficient torque management and smooth transitions, making it advantageous in both fieldwork and transport scenarios. The 59.2 qt (56.0 L) oil capacity signals a robust hydraulic system essential for sustaining prolonged operations, though regular maintenance is necessary to ensure optimal performance and longevity.
| Transmission | John Deere PowrQuad |
| Type | partial power shift |
| Gears | 16 forward and reverse |
| Oil capacity | 59.2qts / 56.0L |
| Description | Four power shift speeds (1-4) in four ranges (A-D) with left-hand reverser |
SPEEDS 1
| Description | With 20.8-38 rear tires |
TRANSMISSION 2
The John Deere 7520 features the AutoQuad transmission, providing 24 forward and reverse gear options for improved versatility in varying field conditions. With an oil capacity of 59.2 quarts (56.0L), effective cooling and lubrication are ensured, reducing the risk of overheating during prolonged use. This tractor is ideal for demanding applications, but operators should monitor oil levels closely to maintain optimal performance and extend the lifespan of the transmission system.
| Transmission | John Deere AutoQuad |
| Gears | 24 forward and reverse |
| Oil capacity | 59.2qts / 56.0L |
SPEEDS 2
| Description | With 18.4-38 rear tires |
TRANSMISSION 3
The John Deere 7520 features an Infinitely Variable Transmission (IVT), providing seamless gear transitions without predefined increments, maximizing traction and fuel efficiency during varied field operations. With an oil capacity of 69.6 quarts (65.9 liters), it ensures optimal lubrication and extended service intervals, albeit necessitating regular checks to prevent overheating. The tractor's exclusive availability with Mechanical Front-Wheel Drive (MFWD) enhances stability and power transfer in challenging terrains, making it ideal for heavy-duty agricultural tasks.
| Transmission | John Deere Infinitely Variable Transmission (IVT) |
| Gears | infinite forward and reverse |
| Oil capacity | 69.6qts / 65.9L |
| Description | available with MFWD only |
MECHANICAL
The John Deere 7520 features a robust 4x4 MFWD chassis for enhanced traction in various field conditions, making it ideal for heavy tillage and transport tasks. Its hydraulic wet disc brakes provide reliable stopping power even under heavy loads, while the ComfortGard cab ensures operator comfort during extended work hours, promoting productivity. The 16-speed partial power shift transmission offers versatility in speed selection, though the 24-speed option maximizes operational flexibility, catering to more specialized farming applications.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | ComfortGard Cab standard with air-conditioning. Open station with two-post ROPS available |
| Transmissions | 16-speed partial power shift 24-speed |
HYDRAULICS
| Type | closed-center PFC |
| Valves | 4 |
| Pump flow | 26.7gpm / 101.1lpm |
TRACTOR HITCH
| Rear Type | II/IIIN |
| Rear lift | 7450lbs / 3379kg 8700lbs / 3946kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic |
| Rear RPM | 540/1000 (1.375) |
| Front PTO | independent. Field conversion kit |
| Front RPM | 1000 |
JOHN DEERE 7520 TIRES
The John Deere 7520 features an Ag front tire size of 14.9R28 and an Ag rear size of 18.4R38, providing good traction and stability for agricultural tasks. The larger rear tires enhance flotation and reduce soil compaction, ideal for field operations in various soil types. However, the specific tire sizes may limit maneuverability in tighter spaces, making it less suitable for intensive orchard or vineyard work.
| Ag front | 14.9R28 |
| Ag rear | 18.4R38 |
DIMENSIONS
| Wheelbase | 104.3inches / 264cm |
| Length | 203.3inches / 516cm |
| Width | 96inches / 243cm *Minimum width with standard axle |
| Height | 114.1inches / 289cm |
| 4WD Clearance (front axle) | 20.5inches / 52cm |
| Rear axle | Rack-and-pinion: 3.4 by 110.5inches / 86by 2806mm |
| Front tread | 59.4 to 83.4inches / 150to 211cm (4WD) |
| Rear tread | 60 to 119.2inches / 152to 302cm (110.5-inch axle) |
JOHN DEERE 7520 WEIGHT
| Operating | 13280lbs / 6023kg |
| Max capacity | 22035lbs / 9995kg |
| Max Drawbar | 4955lbs / 2247kg |
| Max front axle | 9695lbs / 4397kg 16315lbs / 7400kg (with loader) |
| Max rear axle | 17185lbs / 7795kg |
DIMENSIONS & TIRES
The John Deere 7520 features a wheelbase of 104.3 inches, providing stability for various tasks and enhancing load distribution. Its weight of 13,280 lbs allows for efficient traction, making it suitable for heavy-duty applications. The combination of front tires (14.9R28) and rear tires (18.4R38) indicates that it can handle diverse terrain while maintaining stability, though soil compaction may be a concern in softer ground scenarios.
| Wheelbase | 104.3inches / 264cm |
| Weight | 13280lbs / 6023kg |
| Front tire | 14.9R28 |
| Rear tire | 18.4R38 |
JOHN DEERE 741 LOADER
| Height (to pin) | 172.5inches / 438cm |
| Clearance, dumped bucket | 139.3inches / 353cm |
| Dump reach | 38.2inches / 97cm |
| Dump angle | 58.9° |
| Clearance, level bucket | 167inches / 424cm |
| Reach at ground | 113.4inches / 288cm |
| Breakout force (at pin) | 7779lbs / 3528kg |
| Breakout force (at 800mm) | 5913lbs / 2682kg |
| Breakout force (bucket) | 7172lbs / 3253kg |
| Lift to full height (at pin) | 4617lbs / 2094kg |
| Lift to full height (at 800mm) | 3527lbs / 1599kg |
| Lift to 1.5m (at pin) | 6259lbs / 2839kg |
| Lift to 1.5m (at 800mm) | 4966lbs / 2252kg |
| Bucket width | 73inches / 185cm 96inches / 243cm |
7520 SERIAL NUMBERS
| Location | On the main tractor frame, right side, above the front axle |
| 2003 | 1001 |
| 2004 | 10001 |
| 2005 | 30001 |
| 2006 | 45001 |
| 2007 | 60001 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 115/150 |
| Battery CCA | 850 |
| Battery volts | 12 |