Hesston 666

Last Updated: July 2024

Overview

The Hesston 666 is a utility tractor powered by a 66.5 hp (49.6 kW) Fiat 8045.02 diesel engine at 2500 rpm. It has a 12-speed transmission with 12 forward and 4 reverse gears. The tractor features a 2WD chassis, hydrostatic power steering, and a Category 2 rear hitch. Key specifications include a 211 ci engine displacement, 18.5 gal fuel capacity, 12.5 gpm hydraulic pump flow, 54.5 hp PTO power, and drawbar performance of 58.19 hp (43.40 kW) at 3.88 mph (6.24 km/h). With agricultural tires and an operating weight of 5689 lbs, the 666 model is designed for versatile farm tasks.

Key Specifications

Category: Utility

Transmission: 12-Speed

Drive Type: 2WD

Operating Weight: 5689

Fuel Type: Diesel

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Hesston 666 Tractor

Hesston 666 vs. Similar Tractors

Operating Weight

Average

Greater than 46% of similar tractors.

Technical Specifications

Engine

Manufacturer: Fiat
Model: 8045.02
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Natural aspiration
Cylinders: 4
Displacement (ci): 211
Bore (in): 3.94
Stroke (in): 4.33
Rated RPM: -
Power Output (hp): -

Transmission

Type: 12-Speed
Forward Gears: 12
Reverse Gears: 4
Total Gears: -

Dimensions

Length (in): 139
Width (in): -
Height (in): 96
Operating Weight (lb): 5689

Power Take-Off (PTO)

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

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: Hydrostatic power
Coolant Capacity (qts): -
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Ag (Agricultural)
Manufacture - End Year: -
Hitch Type: Category 2
Hitch Category: Category 2
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: 12 volts
Brake Type: -
Hydraulic System Type: Open center

Test Results

Nebraska Tractor Test Laboratory - Test Date: January 1, 1983

Maximum Power and Fuel Consumption

Maximum Power: (Please refer to specific data in the report)
Fuel Consumption at Maximum Power: (Please refer to specific data in the report)

Drawbar Performance

Power at Rated Engine Speed: (Please refer to specific data in the report)
Fuel Consumption at Rated Speed: (Please refer to specific data in the report)

Torque and Engine Performance

Maximum Torque: (Please refer to specific data in the report)
Torque Rise: (Please refer to specific data in the report)

Hydraulic Performance

Maximum Force Exerted: (Please refer to specific data in the report)
Pump Delivery Rate: (Please refer to specific data in the report)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed: (Please refer to specific data in the report)
Fuel Consumption: (Please refer to specific data in the report)

NTTL. (1983). Test 1485: Hesston 666, 666 DT, 666 DT/L and 666/L Fiat Models (12-Speed). University of Nebraska-Lincoln: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1799