In 1993, White Farm Equipment (WFE) introduced the AgroStar 8.31 as the flagship model within the Deutz-Fahr product line. The tractor was manufactured at the AGCO facility in Independence, Missouri, United States. Production of this model ran from 1993 through 1995.
The AgroStar 8.31 was built on the same platform architecture as several other models in the agricultural equipment industry, including the Massey Ferguson 9240, SAME 265, Lamborghini Traction, and White-Baureihen 6100/6200, as well as the AGCO Allis 9000. This platform-sharing approach allowed manufacturers to optimize production costs while offering distinct branding options across different market segments.
The model represented a collaboration between multiple international manufacturers. The power unit was supplied by KHD AG (Klöckner-Humboldt-Deutz), the cabin was provided by White, the transmission system came from FUNK, and the rear axle assembly, including the rear differential, was developed by David Brown. This multinational component sourcing was characteristic of agricultural equipment manufacturing during this period.
Production numbers remained limited throughout the manufacturing run. Fewer than 50 units of the AgroStar 8.31 were built during its production lifetime, making it a rare machine in the agricultural equipment market.
Most Common Uses
The AgroStar 8.31, with its 230 horsepower output and 10,500-kilogram lift capacity, was designed for large-scale farming operations requiring substantial power and capability.
Primary applications included deep tillage operations with heavy plows, chisel plows, and disk harrows in preparation for planting. The 877 Newton-meter torque output and 25 percent torque rise enabled the tractor to handle soil-engaging implements in challenging field conditions.
The unit was used for primary tillage in grain production operations, particularly in regions with heavy clay soils or large acreage requirements. The 18-speed transmission allowed operators to select optimal ground speeds for different tillage depths and soil conditions.
Planting operations with large grain drills and row-crop planters represented another application area. The hydraulic system’s 87 liters per minute flow rate provided adequate capacity for operating pneumatic seed delivery systems and hydraulic down-pressure controls on planting equipment.
Heavy-duty fieldwork including subsoiling, ripping operations, and land leveling fell within the tractor’s operational range. The four-wheel drive system and 12,000-kilogram maximum weight capacity provided traction in difficult field conditions.
The tractor was employed in harvest support roles, including operating grain carts and powering forage harvesters. The independent PTO system and electrohydraulic engagement controls allowed smooth power transfer to these implements.
Secondary tillage operations with large cultivators, field cultivators, and combination tillage tools were performed with this model. The speed range up to 40 kilometers per hour enabled transport between fields and to maintenance facilities.
Large-scale hay production operations utilized the AgroStar 8.31 for pulling mower-conditioners, wide tedders, high-capacity balers, and accumulation systems. The three hydraulic remote valves provided control for implements requiring multiple hydraulic functions.
In livestock operations, the tractor handled manure spreading equipment, heavy feed wagons, and silage packing duties. The air-cooled engine design reduced maintenance concerns in dusty livestock production environments.
The model found applications in custom farming operations and contractor services where equipment was transported between multiple farm locations. The front and rear PTO options expanded implement compatibility across different regional equipment standards.
Engine Specs
The AgroStar 8.31 was powered by a KHD AG BF6L513 FR engine. This power unit featured air cooling technology, which eliminated the need for liquid coolant systems and reduced maintenance requirements in field conditions.
The engine configuration consisted of six cylinders with turbocharging and intercooling capabilities. The displacement measured 9,572 cubic centimeters, achieved through a bore of 125 millimeters and a stroke of 130 millimeters.
Power output reached 169 kilowatts (230 horsepower) at a rated engine speed of 2,300 revolutions per minute. Peak torque measured 877 Newton-meters at 1,600 revolutions per minute, with a torque rise capability of 25 percent, providing substantial pulling power at lower engine speeds.
Fluid Capacities
The fuel system incorporated a 367-liter diesel tank, providing extended operating periods between refueling stops. The engine lubrication system required 23 liters of motor oil for proper operation.
Transmission System
The tractor utilized a FUNK Powertech Powershift transmission, offering 18 forward gears and 9 reverse gears. This configuration provided a speed range from 2.7 to 40.0 kilometers per hour, allowing operators to match ground speed precisely to field conditions and implement requirements.
Power Take-Off System
he power take-off (PTO) system operated independently from the engine, with electrohydraulic engagement controls. Standard PTO speed was 1,000 revolutions per minute. A front-mounted PTO operating at 1,000 revolutions per minute was available as an option.
Hydraulic System
The hydraulic system featured a flow rate of 87 liters per minute at an operating pressure of 190 bar. The implement hitch incorporated electronic hitch control (EHR) with a maximum lift capacity of 10,500 kilograms at the rear three-point linkage. A front hitch system was available as an option. The hydraulic system included three remote control valves for implement operation.
Steering and Drivetrain
The tractor employed a hydrostatic steering system for precise control. The front axle was manufactured by ZF. The turning radius measured 11.4 meters.
Dimensions and Weight
With four-wheel drive configuration, the AgroStar 8.31 measured 5.08 meters in total length, 2.48 meters in width, and 3.07 meters in height. The wheelbase spanned 2.97 meters. Operating weight without ballast was 8,510 kilograms, with a maximum permissible weight of 12,000 kilograms.
Standard Tire Configuration
The four-wheel drive model came equipped with 16.9R30 tires on the front axle and 20.8R42 tires on the rear axle.
Equipment and Options
Standard equipment included an AGCO-series cabin with a comfort seat, heating, ventilation system, and air conditioning. Work lights were included in the base specification. Wheel weights, front weights, and compressed air systems were available as optional equipment.
AgroStar 8.31 Manufacturer Information
- Manufacturer: WFE (White Farm Equipment)
- Series: Deutz-Fahr AgroStar Series
- Model: Deutz-Fahr AgroStar 8.31
- Production Years: 1993-1995
- Production Location: Independence, Missouri, USA
- Engine Manufacturer: KHD AG
- Engine Model: BF6L513 FR
- Engine Cooling: Air
- Cylinders/Turbo/Intercooler: 6/T/I
The combination of limited production numbers, multinational component collaboration, air-cooled Deutz engine technology in a 230-horsepower configuration, and the FUNK Powershift transmission system made the AgroStar 8.31 a distinct model in agricultural equipment history that represented the convergence of German engineering, American manufacturing, and British drivetrain technology in a single platform.
