Challenger MT851 - Horsepower, Weight, Specs, Problems, Price & More

The Challenger MT851 tractor is powered by a MAN 15.3L 6-cyl diesel engine that provides of horsepower and 1844 lb-ft /2500.5 Nm torque. It has a crawler drive configuration and a continuously-variable transmission transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is not specified in the data provided. However, based on the model of the tractor, the engine is likely to be a powerful MAN D3876 turbocharged diesel 6-cylinder liquid-cooled inline engine. This engine has a displacement of 933.7ci / 15.3L, a bore/stroke of 5.43x6.69inches / 138x 170 mm, and a rated power of 504.2hp / 376.0kW. It also has a high torque of 1844 lb-ft /2500.5 Nm, which is essential for heavy-duty tasks. The engine is equipped with an electric starter with a voltage of 24V and requires an oil change after every 500 hours of use.

Transmission

The transmission of the Challenger MT851 tractor is a continuously-variable transmission (CVT) known as Accu-VT. This type of transmission provides infinite forward and reverse gears, allowing for smooth and seamless gear changes. The engine (gross) power of the tractor is 504.2hp / 376.0kW, which is transmitted to the wheels through the Accu-VT transmission. The transmission is designed to provide maximum power and efficiency, making it ideal for heavy-duty tasks. The transmission is not specified in detail in the data provided, but it is likely to be a reliable and efficient system.

Brakes

The brakes of the Challenger MT851 tractor are an essential safety feature that ensures the tractor can stop quickly and safely. The brakes are not specified in detail in the data provided, but they are likely to be a hydraulic disc brake system. The MAN D3876 turbocharged diesel 6-cylinder liquid-cooled inline engine provides a high power output of 504.2hp / 376.0kW, which requires a robust braking system to bring the tractor to a stop. The brake system is designed to be reliable and efficient, ensuring that the tractor can stop quickly and safely even when carrying heavy loads. The brake system is also designed to be low maintenance, reducing the overall cost of ownership.

Steering

The steering system of the Challenger MT851 tractor is designed to provide precise and responsive control. The steering system is not specified in detail in the data provided, but it is likely to be a hydraulic power steering system. The MAN 15.3L 6-cylinder diesel engine provides a high power output of 504.2hp / 376.0kW, which requires a responsive and precise steering system. The steering system is designed to be easy to use, even for inexperienced operators, and provides excellent maneuverability. The tractor is equipped with a large fuel tank with a capacity of 350gal / 1324.8L and an exhaust fluid (DEF) tank with a capacity of 35.7gal / 135.1L, ensuring that the tractor can operate for extended periods without refueling.

Common Problems

Users of the Challenger MT851 tractor have reported some common problems, including issues with the chassis, cab, and transmission. Some users have reported that the crawler chassis can be prone to damage, particularly when operating in rough terrain. Others have reported issues with the cab, including problems with the air-conditioning system. Finally, some users have reported issues with the continuously-variable transmission (CVT), particularly with regards to reliability and durability. However, these issues are relatively rare, and most users report that the Challenger MT851 is a reliable and efficient tractor that is well-suited to heavy-duty tasks.

What Users Like

Users of the Challenger MT851 tractor appreciate its powerful engine, which provides a high power output of 504.2hp / 376.0kW. They also appreciate the smooth and efficient operation of the continuously-variable transmission (CVT), which provides infinite forward and reverse gears. The tractor's hydraulic system is also highly regarded, providing powerful and efficient operation. Users also appreciate the tractor's responsive and precise steering system, which provides excellent maneuverability. Finally, users appreciate the low maintenance requirements of the tractor, which reduces the overall cost of ownership.

Challenger MT851 Technical Specifications

Power
Engine (gross)	504.2hp / 376.0kW
Engine Detail
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)	504.2hp / 376.0kW
Rated Rpm	1730
Torque	1844 lb-ft /2500.5 Nm
Torque Rpm	1450
Starter	electric
Starter Volts	24
Oil Change	500 h
Engine
Description	MAN 15.3L 6-cyl diesel
Fuel Tank	350gal / 1324.8L
Exhaust Fluid (def)	35.7gal / 135.1L
Transmission
Transmission	Accu-VT
Type	continuously-variable transmission
Gears	infinite forward and reverse
Mechanical
Chassis	crawler
Cab	Cab standard with air-conditioning.
Transmission	continuously-variable transmission
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
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
Electrical
Ground	negative
Charging System	alternator
Charging Amps	325
Batteries	3
Battery Volts	12
Power Take Off Pto
Rear Pto	independent
Rear Rpm	1000 / 1000E
Dimensions And Tracks
Wheelbase	118inches / 299cm
Weight	42000lbs / 19051kg
Description	tracks

Other Challenger tractors:

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