John Deere 8335RT

Last Updated: July 2024

Overview

The John Deere 8335RT is a robust track tractor powered by a 6-cylinder John Deere diesel engine with dual turbochargers and an air-to-air aftercooler. The engine produces a maximum power output of 323.28 hp at 1800 rpm and a peak torque of 1035 lb-ft at 1601 rpm, with a torque rise of 42.3%. The transmission is a selective gear fixed ratio with full range operator controlled power shift, offering 16 forward gears ranging from 1.13 mph to 23.46 mph and 4 reverse gears from 1.06 mph to 6.56 mph at 1500 rpm. The hydraulic system is a closed center pressure-flow compensated type, capable of exerting a maximum force of 21,167 lbs and delivering 64.3 GPM at 2,425 psi, providing 91.1 hp of hydraulic power. The tractor has an unladen operating weight of 35,120 lbs with the operator and 38,670 lbs with ballast.

Key Specifications

Power Output: 323.28 (Max at 1800 rpm)

Transmission: Selective Gear Fixed Ratio with Full Range Operator Controlled Power Shift

Drive Type: Track

Operating Weight: 35120 (Unladen with operator), 38670 (With Ballast)

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: John Deere
Model: Diesel
Cooling Type: Liquid-Cooled
Cylinder Orientation: Inline
Valve Configuration: 24-Valve
Fuel Type: Diesel
Induction Type: Six cylinder vertical with two turbochargers and air-to-air aftercooler
Cylinders: 6
Displacement (ci): 548
Bore (in): 4.66
Stroke (in): 5.35
Rated RPM: 2100
Power Output (hp): 323.28 (Max at 1800 rpm)

Transmission

Type: Selective Gear Fixed Ratio with Full Range Operator Controlled Power Shift
Forward Gears: 16 (1.13 mph to 23.46 mph)
Reverse Gears: 4 (1.06 mph, 2.83 mph, 3.57 mph, 6.56 mph at 1500 rpm)
Total Gears: Infinite

Dimensions

Length (in): 270.9
Width (in): 134.6
Height (in): 131.3
Operating Weight (lb): 35120 (Unladen with operator), 38670 (With Ballast)

Power Take-Off (PTO)

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

Miscellaneous

Chassis: Track Tractor
Drive Type: Track
Steering Type: Electro-Hydraulic Power
Coolant Capacity (qts): 43.3
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: 3
Hitch Position: -
Hitch Capacity (lb): -
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 15 to 27, 2011

Maximum Power and Fuel Consumption

Maximum Power at PTO Speed (1 hour): 323.28 HP (241.07 kW) at 1800 rpm
Fuel Consumption at Maximum Power: 17.34 Gal/hr (65.62 l/h) with a fuel efficiency of 0.376 lb/hp.hr (0.228 kg/kW.h)

Drawbar Performance

Maximum Power (8th Gear): 250.61 HP (186.88 kW) with a drawbar pull of 20835 lbs (92.68 kN) and a speed of 4.51 mph (7.26 km/h)
Fuel Consumption at Maximum Power (8th Gear): 0.447 lb/hp.hr (0.272 kg/kW.h) with a fuel efficiency of 15.67 Hp.hr/gal (3.09 kW.h/l)

Torque and Engine Performance

Maximum Torque: 1035 lb.-ft. (1403 Nm) at 1601 rpm
Torque Rise: 42.3% with a power increase at 1800 rpm of 11.2%

Hydraulic Performance

Maximum Force Exerted (OECD Static Test): 21167 lbs (94.2 kN) through the whole range
Pump Delivery Rate at Rated Engine Speed (64.3 GPM Pump): 64.3 GPM (243.4 l/min)
Hydraulic Power (64.3 GPM Pump): 91.1 HP (67.9 kW) at a delivery pressure of 2425 psi (167 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 18.48 Hp.hr/gal (3.64 kW.h/l)
Fuel Consumption: 17.06 Gal/hr (64.59 l/h) at 2003 rpm

NTTL.(2011). Nebraska OECD Tractor test 1999 for John Deere 8335RT Diesel. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/2411