John Deere 8285R

Last Updated: July 2024

Overview

The John Deere 8285R is a powerful row-crop tractor equipped with a 6-cylinder, 24-valve, dual turbocharged and air-to-air aftercooled PowerTech PSX diesel engine from John Deere. It has a displacement of 548 cubic inches and a bore of 4.66 inches with a stroke of 5.354 inches. At the rated engine speed of 2100 rpm, the engine delivers 257.34 horsepower, with a maximum torque of 926 lb-ft at 1551 rpm. The tractor features a sophisticated hydrostatic power steering system and transmission options including a 16-speed full powershift or an infinitely variable transmission (IVT) with 4 reverse gears. The closed-center pressure-flow compensated hydraulic system operates at a sustained pressure of 2404 psi with a pump delivery rate of 64.1 GPM. The unladen tractor mass is 25,330 pounds, with a wheelbase of 118.9 inches and dimensions of 243.9 inches in length, up to 132.6 inches in width (rear tread), and 138.9 inches in height. This model offers advanced features like Intelligent Power Management (IPM) and provides detailed performance data across various operating conditions, including drawbar performance, PTO speeds, and fuel consumption rates.

Key Specifications

Category: Row Crop

Power Output: 257.34 hp (at 2099 rpm)

Transmission: full power shift / infinitely variable transmission (IVT)

Drive Type: MFWD 4WD

Operating Weight: 25330 (unladen tractor mass)

Fuel Type: diesel

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John Deere 8285R Tractor

John Deere 8285R vs. Similar Tractors

Power Output

Above Average

Greater than 86% of similar tractors.

Hitch Capacity

Excellent

Greater than 90% of similar tractors.

Operating Weight

Above Average

Greater than 80% of similar tractors.

Technical Specifications

Engine

Manufacturer: John Deere
Model: PowerTech PSX
Cooling Type: liquid
Cylinder Orientation: six-cylinder vertical with two turbochargers and air-to-air aftercooler
Valve Configuration: DOHC (Dual Overhead Cam), assuming from "24-valve"
Fuel Type: diesel
Induction Type: dual turbochargers
Cylinders: 6
Displacement (ci): 548 ci
Bore (in): 4.66
Stroke (in): 5.354
Rated RPM: 2100
Power Output (hp): 257.34 hp (at 2099 rpm)

Transmission

Type: full power shift / infinitely variable transmission (IVT)
Forward Gears: 16
Reverse Gears: 4
Total Gears: -

Dimensions

Length (in): 243.9
Width (in): 96 (up to 132.6 in rear tread width)
Height (in): 138.9
Operating Weight (lb): 25330 (unladen tractor mass)

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x4 MFWD 4WD
Drive Type: MFWD 4WD
Steering Type: hydrostatic power
Coolant Capacity (qts): 43.3 qts
Front Tire Diameter (in): Unknown (size provided, but not diameter)
Front Tire Width (in): Unknown (size provided, but not width)
Rear Tire Diameter (in): Unknown (size provided, but not diameter)
Rear Tire Width (in): Unknown (size provided, but not width)
Front/Rear Rim Diameter (in): Unknown (tire size provided, but not rim diameter separately)
Tire Type: Ag (Agricultural)
Manufacture - End Year: 2013
Hitch Type: 3/3N
Hitch Category: Category 3
Hitch Position: Rear
Hitch Capacity (lb): 24750 lbs (at 24 inches behind the hitch point)
Operator Station Type: Cab
Starter Type: electric
Brake Type: -
Hydraulic System Type: closed center pressure-flow compensated

Test Results

Nebraska Tractor Test Laboratory - Test Date: September 27 - October 5, 2011

Maximum Power and Fuel Consumption

Maximum Power at Rated Engine Speed: 257.34 HP (191.90 kW) at 2099 rpm
Fuel Consumption at Maximum Power: 14.49 Gal/hr (54.85 l/h) with a fuel efficiency of 0.394 lb/hp.hr (0.240 kg/kW.h)
Maximum Power at Standard PTO Speed (1000 rpm): 276.45 HP (206.15 kW) at 2003 rpm with a fuel consumption of 15.18 Gal/hr (57.46 l/h)

Drawbar Performance

Maximum Drawbar Power (8th Gear): 222.70 HP (166.06 kW) with a drawbar pull of 17487 lbs (77.79 kN) at 4.78 mph (7.68 km/h) and a fuel consumption of 0.457 lb/hp.hr (0.278 kg/kW.h)
Drawbar Power at Reduced Engine Speed (11th Gear, 1700 rpm): 251.35 HP (187.43 kW) with a drawbar pull of 15624 lbs (69.50 kN) at 6.04 mph (9.71 km/h) and a fuel consumption of 0.435 lb/hp.hr (0.264 kg/kW.h)

Torque and Engine Performance

Maximum Torque: 926 lb.-ft. (1256 Nm) at 1551 rpm
Torque Rise: 43.8% with a power increase at 1700 rpm of 11.7%

Hydraulic Performance

Hydraulic Pump Delivery Rate at Maximum Hydraulic Power: 64.1 GPM (242.8 l/min) with a delivery pressure of 2404 psi (166 bar)
Hydraulic Power: 90.0 HP (67.1 kW) at maximum delivery pressure

Overall Efficiency

Fuel Efficiency at Maximum Power: 17.76 Hp.hr/gal (3.50 kW.h/l)
Fuel Consumption at Reduced Engine Speed, 11th Gear (1700 rpm): 0.423 lb/hp.hr (0.257 kg/kW.h) with a fuel efficiency of 16.55 Hp.hr/gal (3.26 kW.h/l)

NTTL.(2011).Nebraska OECD Tractor test 2003 for John Deere 8285R Diesel. Lincoln, NE:Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/2402