Challenger
Challenger MT851
The Challenger MT851 is an agricultural crawler tractor in the MT800 Series produced by Challenger, a part of AGCO, starting from 2021. It features a powerful MAN 15.3L 6-cylinder turbocharged diesel engine delivering 504.2 hp (376.0 kW) gross power. The tractor uses an Accu-VT continuously-variable transmission with infinite forward and reverse gears. It has a crawler drive and comes standard with an air-conditioned cab. The MT851 includes advanced hydraulics with closed center pressure-flow compensated system, rear PTO independent at 1000/1000E rpm, and a large fuel tank capacity of 350 gallons. Dimensions include a wheelbase of 118 inches, length of 266 inches, and a weight of 42,000 lbs. Electrical system features a 325 amp alternator and three 12-volt batteries. This model is part of the MT800 Series and is related to the MT856 and the earlier MT845E (2014-2020).
Power504 hp
Founded2021 -
ModelMT851
Technical Specifications
Detailed specifications and technical data for Challenger MT851
Power
| Engine (gross) | 504.2 hp (376.0 kW) |
|---|
Engine
| Type | turbocharged diesel |
|---|---|
| Model | MAN D3876 |
| Torque | 1844 lb-ft (2500.5 Nm) |
| Cooling | liquid-cooled inline |
| Starter | electric |
| Cylinders | 6-cylinder |
| Fuel tank | 350 gal (1324.8 L) |
| Rated RPM | 1730 |
| Oil change | 500 h |
| Torque RPM | 1450 |
| Bore/Stroke | 5.43x6.69 inches (138 x 170 mm) |
| Displacement | 933.7 ci (15.3 L) |
| Starter volts | 24 |
| Exhaust fluid (DEF) | 35.7 gal (135.1 L) |
| Rated Power (gross) | 504.2 hp (376.0 kW) |
Dimensions
| Gauge | 88 to 128 inches (223 to 325 cm) |
|---|---|
| Width | 116.1 inches (Minimum width) (294 cm) |
| Height | 148 inches (375 cm) |
| Length | 266 inches (675 cm) |
| Weight | 42000 lbs (19051 kg) |
| Wheelbase | 118 inches (299 cm) |
| Max weight | 59000 lbs (26762 kg) |
| Ground clearance | 14.1 inches (35 cm) |
Electrical
| Ground | negative |
|---|---|
| Batteries | 3 |
| Battery volts | 12 |
| Charging amps | 325 |
| Charging system | alternator |
Hydraulics
| Type | closed center pressure-flow compensated |
|---|---|
| Pressure | 2900 psi (200.0 bar) |
| Pump flow | 58.1 gpm (219.9 lpm) |
| Rear valves | 4 to 8 |
| Optional pump flow | 116.2 gpm (439.8 lpm) |
Mechanical
| Cab | standard with air-conditioning |
|---|---|
| Drive | crawler |
Production
| Type | Agricultural Crawler tractor |
|---|---|
| Manufacturer | Challenger (a part of AGCO) |
Transmission
| Type | continuously-variable transmission |
|---|---|
| Gears | infinite forward and reverse |
| Transmission | Accu-VT |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 1000/1000E |