| Manufacturer | Challenger |
| Price | - |
| Model | MT856 |
| Equipment Type | Agricultural Crawler Tractors |
| Factory |
CHALLENGER MT856 POWER
| Engine (gross) | 556.5hp / 415.0kW |
ENGINE DETAIL
The Challenger MT856 features a robust MAN D3876 turbocharged diesel engine with a 15.3L displacement, offering a high output of 556.5hp at 1730 RPM, complemented by an impressive torque of 1991 lb-ft at 1450 RPM, ideal for heavy-duty agricultural tasks. Its significant torque at lower RPMs enhances operational efficiency, especially when handling large implements or working in challenging soil conditions. Regular oil changes every 500 hours maintain engine performance and longevity, though the electric 24V starter requires careful attention to prevent potential issues in cold conditions.
| Description | MAN D3876 turbocharged diesel 6-cylinder liquid-cooled inline |
| Displacement | 933.7ci / 15.3L |
| Bore/Stroke | 5.43x6.69inches / 138x 170 mm |
| Rated Power (ECE R120) | 556.5hp / 415.0kW |
| Rated RPM | 1730 |
| Torque | 1991 lb-ft /2699.8 Nm |
| Torque RPM | 1450 |
| Starter | electric |
| Starter volts | 24 |
| Oil change | 500 h |
CHALLENGER MT856 ENGINE
The Challenger MT856 features a robust MAN 15.3L 6-cylinder diesel engine, providing substantial torque and power for demanding agricultural tasks. With a large 350-gallon fuel tank coupled with a 35.7-gallon DEF reservoir, this tractor offers extended operational time, reducing downtime for refueling in expansive fields. However, the heavy engine may challenge maneuverability on smaller plots, making it ideal for larger operations needing high efficiency and low interruptions.
| Description | MAN 15.3L 6-cyl diesel |
| Fuel tank | 350gal / 1324.8L |
| Exhaust fluid (DEF) | 35.7gal / 135.1L |
TRANSMISSION
The Challenger MT856 features an Accu-VT continuously-variable transmission (CVT), which allows for seamless gear changes and optimal engine efficiency. This system provides infinite forward and reverse gears, enhancing productivity and responsiveness in various field conditions. A potential challenge may include higher initial costs and complex maintenance, but the benefits of improved fuel efficiency and reduced operator fatigue can outweigh these factors during extended operational periods.
| Transmission | Accu-VT |
| Type | continuously-variable transmission |
| Gears | infinite forward and reverse |
MECHANICAL
The Challenger MT856 features a crawler chassis, which enhances stability and traction on uneven terrain, making it ideal for heavy-duty agricultural applications. Its standard cab with air-conditioning improves operator comfort during long working hours, while the continuously-variable transmission (CVT) allows for smooth acceleration and optimal engine efficiency by providing an infinite range of gear ratios. However, the complexity of the CVT may pose challenges in maintenance and repair compared to traditional gear transmissions.
| Chassis | crawler |
| Cab | Cab standard with air-conditioning. |
| Transmission | continuously-variable transmission |
HYDRAULICS
| Type | closed center pressure-flow compensated |
| Pressure | 2900psi / 200.0bar |
| Rear valves | 4 to 8 |
| Pump flow | 58.1gpm / 219.9lpm/116.2gpm / 439.8lpm |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000 / 1000E |
DIMENSIONS
| Wheelbase | 118inches / 299cm |
| Length | 266inches / 675cm |
| Width | 116.1inches / 294cm *Minimum width |
| Height | 148inches / 375cm |
| Weight | 42000lbs / 19051kg |
| Max weight | 59000lbs / 26762kg |
| Ground clearance | 14.1inches / 35cm |
| Gauge | 88 to 128inches / 223to 325 cm |
DIMENSIONS & TRACKS
| Wheelbase | 118inches / 299cm |
| Weight | 42000lbs / 19051kg |
| Description | tracks |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 325 |
| Batteries | 3 |
| Battery volts | 12 |