John Deere 8520T

Last Updated: July 2024

Overview

The John Deere 8520T is a powerful agricultural crawler tractor, part of the 8020 series, designed to deliver robust performance in various farming operations. It was produced by John Deere in Waterloo, Iowa, USA. The tractor is equipped with a 496 ci (8.1 L) turbocharged diesel engine that delivers 255.96 horsepower at 2200 rpm. The 8520T offers a full power shift transmission with 16 forward and 4 reverse gears, enabling it to handle demanding tasks with ease. With its electro-hydraulic power steering and hydraulic wet disc brakes, this tractor ensures precise control and safety during operation. The chassis is specifically designed for track use, distinguished by its crawler design, providing superior traction compared to wheel tractors. This, combined with a standard cab design, makes the 8520T suitable for extended use in various field conditions.

Key Specifications

Category: Agricultural, Crawler

Power Output: 255.96

Transmission: Full power shift

Drive Type: Track

Operating Weight: 27280

Fuel Type: Diesel

John Deere 8520T vs. Similar Tractors

Power Output

Above Average

Greater than 83% of similar tractors.

Hitch Capacity

Average

Greater than 57% of similar tractors.

Operating Weight

Average

Greater than 57% of similar tractors.

Technical Specifications

Engine

Manufacturer: John Deere
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Turbocharged
Cylinders: 6
Displacement (ci): 496
Bore (in): 4.56
Stroke (in): 5.06
Rated RPM: 2200
Power Output (hp): 255.96

Transmission

Type: Full power shift
Forward Gears: 16
Reverse Gears: 4
Total Gears: -

Dimensions

Length (in): 207
Width (in): 119.5
Height (in): 122.9
Operating Weight (lb): 27280

Power Take-Off (PTO)

PTO Type: Independent with hydraulic wet disc clutch
PTO Speed 1 (rpm): 1000
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: Crawler
Drive Type: Track
Steering Type: Electro-hydraulic power
Coolant Capacity (qts): 35.9
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: -
Hitch Category: III/IIIN
Hitch Position: Rear
Hitch Capacity (lb): 16520
Operator Station Type: Cab
Starter Type: Electric
Brake Type: Hydraulic wet disc
Hydraulic System Type: Closed center pressure-flow compensated (PFC)

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 30 to May 31, 2002

Maximum Power and Fuel Consumption

Rated Engine Speed: 255.96 HP (190.87 kW) at 2200 rpm
Fuel Consumption at Rated Engine Speed: 14.89 Gal/hr (56.36 l/h) with a fuel efficiency of 0.410 lb/hp.hr (0.249 kg/kW.h) and 17.19 Hp.hr/gal (3.39 kW.h/l)
Maximum Power: 291.67 HP (217.50 kW) at 2000 rpm
Fuel Consumption at Maximum Power: 16.02 Gal/hr (60.65 l/h) with a fuel efficiency of 0.387 lb/hp.hr (0.235 kg/kW.h) and 18.20 Hp.hr/gal (3.59 kW.h/l)

Drawbar Performance

Power at Maximum Power (9th Gear): 219.23 HP (163.48 kW) with a drawbar pull of 18432 lbs (81.99 kN) and a speed of 4.46 mph (7.18 km/h) with 3.39% slip
Fuel Consumption: 0.480 lb/hp.hr (0.292 kg/kW.h) with a fuel efficiency of 14.67 Hp.hr/gal (2.89 kW.h/l)
Power at Reduced Engine Speed (11th Gear at 75% Pull): 172.94 HP (128.96 kW) with a drawbar pull of 13862 lbs (61.66 kN) and a speed of 4.68 mph (7.53 km/h) with 1.87% slip
Fuel Consumption at Reduced Speed: 0.434 lb/hp.hr (0.264 kg/kW.h) with a fuel efficiency of 16.22 Hp.hr/gal (3.20 kW.h/l)

Torque and Engine Performance

Maximum Torque: 912 lb.-ft. (1236 Nm) at 1400 rpm
Torque Rise: 49.2% with a power increase at 1800 rpm of 36%

Hydraulic Performance

Maximum Force Exerted: 16520 lbs (73.5 kN) at hitch points
Pump Delivery Rate at Maximum Hydraulic Power: 34.2 GPM (129.5 l/min) at a delivery pressure of 2490 psi (172 bar)
Hydraulic Power: 49.7 HP (37.1 kW)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 17.19 Hp.hr/gal (3.39 kW.h/l)
Fuel Consumption: 14.89 Gal/hr (56.36 l/h) at 2200 rpm

Nebraska Tractor Test Lab, "Test 1802: John Deere 8520T 16 Speed" (2002). Nebraska Tractor Tests. 185. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/185