| Manufacturer | AGCO |
| Price | - |
| Model | 8425 |
| Equipment Type | Four-wheel Drive 4WD Tractors |
| Factory | Coldwater, Ohio, USA |
OCED TRACTOR TEST 1721
| Description | Cummins diesel 18-speed 4WD/October 1 - 22, 1996/Link: OCED Tractor Test 1721 file/Drawbar performance/Gear 5L used for power test./Gear 2H used for pull test. |
| Max power | 346.61 hp/258.5 kW |
| Fuel use | 22.1 gal/hour/83.6 l/hour |
| Max pull | 35,497 lbs/16101 kg |
AGCO 8425 POWER
| Engine | 425 hp/316.9 kW |
| Drawbar (tested) | 346.61 hp/258.5 kW |
ENGINES OVERVIEW
The AGCO 8425 tractor is powered by either a Cummins 14.0L or a Detroit Diesel 12.7L engine, providing robust performance for heavy-duty agricultural tasks. The Cummins engine offers higher torque and efficiency, ideal for demanding applications, while the Detroit Diesel engine is known for its reliability and lower maintenance needs. Consider engine choice based on specific operational requirements, as fuel consumption and power delivery may vary significantly between the two options.
| Description | Cummins 14.0L 6-cyl diesel/Detroit Diesel 12.7L 6-cyl diesel |
ENGINE DETAIL
The AGCO 8425 tractor is equipped with a powerful Cummins N14 engine providing 425 hp and 1500 lb-ft of torque, optimized for high-performance agricultural tasks, and featuring a robust direct injection fuel system. Its large displacement (14.0 L) and efficient turbocharging enhance fuel efficiency and power delivery at lower RPMs, making it suitable for demanding applications. However, the choice of engine can be a consideration, as the Detroit Diesel option was only available until 1998, meaning parts and service may vary depending on the specific engine configuration.
| Description | Cummins N14/turbocharged aftercooled diesel/6-cylinder/liquid-cooled inline |
| Displacement | 855 ci/14.0 L |
| Bore/Stroke | 5.50x6.00 inches/140 x 152 mm |
| Power | 425 hp/316.9 kW |
| Fuel system | direct injection |
| Air cleaner | dual paper elements with aspirator |
| Pre-heating | coolant heater |
| Compression | 16.5:1 |
| Rated RPM | 2100 |
| Torque | 1500 lb-ft/2034.0 Nm |
| Torque RPM | 1400 |
| Starter volts | 12 |
| Description | Detroit Diesel Series 60/turbocharged diesel/6-cylinder/liquid-cooled inline/The Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available. |
| Displacement | 774 ci/12.7 L |
| Power | 425 hp/316.9 kW |
| Fuel system | direct injection |
| Pre-heating | coolant heater |
| Rated RPM | 2100 |
| Torque | 1500 lb-ft/2034.0 Nm |
| Torque RPM | 1200 |
AGCO 8425 ENGINES
The AGCO 8425 tractor is powered by either a Cummins 14.0L or a Detroit Diesel 12.7L engine, both of which offer robust performance with high torque characteristics, suitable for heavy-duty agricultural tasks. The key advantages include fuel efficiency and reliability, although maintenance complexity may increase with larger engines. Ideal for demanding applications like plowing or hauling, the choice of engine can affect operational costs and service intervals.
| Description | Cummins 14.0L 6-cyl diesel/Detroit Diesel 12.7L 6-cyl diesel |
TRANSMISSION
The AGCO 8425 tractor features an Eaton Fuller partially synchronized transmission with 18 forward and 2 reverse gears, allowing for smooth gear transitions and efficient speed control during various field operations. The 393.7mm dry disc clutch provides reliable engagement and disengagement, contributing to precision in power transfer. However, the partially synchronized design may require more skill to operate effectively compared to fully synchronized transmissions, making it crucial for operators to be familiar with gear selection techniques, especially in demanding agricultural scenarios.
| Transmission | Eaton Fuller |
| Type | partially synchronized |
| Gears | 18 forward and 2 reverse |
| Clutch | 393.7mm dry disc |
MECHANICAL
The AGCO 8425 tractor features a robust 4x4 articulated 4WD chassis, enhancing maneuverability in varied terrains, making it ideal for both agricultural and construction applications. Its hydraulic disc brakes provide reliable stopping power under load, while the 18-speed partially synchronized transmission allows for smooth gear shifts, accommodating a wide range of working speeds. The standard cab equipped with heating and air conditioning ensures operator comfort during extended use, though it may limit visibility compared to open-cab designs in certain conditions.
| Chassis | 4x4 articulated 4WD |
| Steering | articulated power |
| Brakes | hydraulic disc |
| Cab | Cab standard with heat and air conditioning. |
| Transmission | 18-speed partially synchronized |
HYDRAULICS
| Type | closed center |
| Pressure | 2500 psi/172.4 bar |
| Valves | 4 or 5 |
| Pump flow | 35 gpm/132.5 lpm |
| SCV flow | 27 gpm/102.2 lpm |
DIMENSIONS
| Wheelbase | 137.1 inches/348 cm |
| Operating weight | 29485 lbs/13374 kg (duals) |
| Ballasted weight | 36118 lbs/16383 kg |
DIMENSIONS & TIRES
The AGCO 8425 tractor, with a wheelbase of 137.1 inches (348 cm), offers excellent stability for heavy-duty tasks, making it suitable for both agricultural and construction applications. Weighing 29,485 lbs (13,374 kg), it provides substantial traction, although this weight may pose transportation challenges on public roads. It’s essential to consider the compatibility of this tractor with various implements, as its significant weight can affect maneuverability in tighter spaces.
| Wheelbase | 137.1 inches/348 cm |
| Weight | 29485 lbs/13374 kg |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 130 |
| Batteries | 3 |
| Battery CCA | 600 |
| Battery volts | 12 |