Challenger MT645C Tractor

Manufacturer	Challenger
Price	206,331(USD)
Model	MT645C
Equipment Type	Row-Crop Tractors
Factory	Beauvais, France

ENGINE DETAIL

The Challenger MT645C features an AGCO SISU POWER 84CTA diesel engine with a displacement of 8.4L and a gross power output of 240hp, capable of peaking at 270hp. Its advanced emission control using selective catalytic reduction (SCR) along with optional integrated exhaust gas recirculation (IEGR) ensures compliance with Interim Tier 4 standards while optimizing fuel efficiency. The high torque rating of 874 lb-ft at 1500 RPM provides robust performance for heavy-duty applications, making it ideal for demanding agricultural tasks but may incur higher maintenance costs due to advanced emission systems.

Description	AGCO SISU POWER 84CTA turbocharged intercooled diesel 6-cylinder liquid-cooled, The engine uses AGCO's e3 selective catalytic reduction (SCR) system to reduce nitrogen oxides (NOx). An exhaust-gas recirculation (IEGR) version of the engine was optionally available
Displacemen	512.6ci / 8.4L
Bore/Strok	4.37x5.71inches / 111x 145mm
Emission	Interim Tier 4
Emission contro	selective catalytic reduction (SCR)/integrated exhaust gas recirculation optional (IECR)
Power (gross	240hp / 179.0kW
Maximum Powe	270hp / 201.3kW
Fuel syste	electronic high-pressure common rail
Compressio	16.7:1
Rated RP	2200
Torqu	874lb-ft / 1185.1Nm
Torque RP	1500
Starte	electric
Starter volt	12

CHALLENGER MT645C ENGINE

The Challenger MT645C, powered by an AGCO SISU POWER 8.4L 6-cylinder diesel engine, emphasizes fuel efficiency with a large 155.9-gallon tank, accommodating extended operational periods which can reduce downtime in the field. The option of a 182.3-gallon tank without SCR (Selective Catalytic Reduction) presents advantages for operators preferring lower emissions management complexity but may impact fuel consumption and performance. Additionally, the DEF (Diesel Exhaust Fluid) capacity of 7.9 gallons supports compliance with stringent emission standards, which is crucial for operations within regulated zones but requires regular monitoring and refilling.

Description	AGCO SISU POWER 8.4L 6-cyl diesel
Fuel tan	155.9gal / 590.1L 182.3gal (without SCR) / 690.0L
Exhaust fluid (DEF	7.9gal / 29.9L

TRANSMISSION

The Challenger MT645C features a Techstar continuously variable transmission (CVT), providing seamless power delivery and optimized fuel efficiency. This system allows for infinite forward and reverse gears, ensuring smooth operation and adaptability to varied field conditions. However, the complexity of CVTs may require specialized maintenance and could pose challenges in terms of repair costs compared to traditional transmission systems.

Transmissio	Techstar CVT
Typ	continuously variable transmission
Gear	infinite forward and reverse

CHALLENGER MT645C TRANSMISSION

The Challenger MT645C features a continuously variable transmission (CVT), enabling seamless power delivery and optimizing fuel efficiency by maintaining the engine at an optimal RPM. This technology offers superior traction control and adaptability to various field conditions, reducing stress on tractor components. However, potential challenges include higher initial costs and the need for specialized maintenance due to the complexity of CVT systems.

Description

continuously variable transmission

MECHANICAL

The Challenger MT645C tractor features an advanced four-wheel drive system and hydraulic wet disc brakes, ensuring enhanced traction and reliable stopping power in varied field conditions. The electro-hydraulic differential locks allow for improved traction control, making this tractor suitable for challenging terrains. Optional comfort features like heated seats and automatic temperature control enhance operator efficiency and productivity, especially during long working hours.

Description	Four-wheel drive Power steering Hydraulic wet disc brakes/Cab standard with heat and air-conditioning. Optional heated seat, power adjustable mirrors, and automatic temperature control
Final drive	planetary
Differential loc	electro-hydraulic front and rear

HYDRAULICS

Typ	closed center load sensing
Pressur	2,901psi / 200.0bar
Valve	4 to 6
Pump flo	26.4gpm / 99.9lpm
Total flo	46.2gpm / 174.9lpm

TRACTOR HITCH

Rear Typ	III
Contro	electronic lower-link draft sensing
Rear lift (at ends	26,460lbs / 12002kg
Rear lift (at 24	21,336lbs / 9678kg
Front Hitc	III
Front lift (at ends	11,020lbs / 4998kg

POWER TAKE-OFF (PTO)

Rear PT	independent
Clutc	electro-hydraulic
Rear RP	1000E / 1000 (1.75)/540E / 1000 (1.375)OptOptional
Front PT	independent OptOptional
Front RP	1000 (1.375)

CHALLENGER MT645C TIRES

The Challenger MT645C, equipped with standard tires of 480/70R34 in the front and 520/85R46 in the rear, offers improved traction and flotation in diverse agricultural terrains, optimizing soil preservation. This tire configuration enhances stability during heavy field operations but may impose challenges in tight row spacing scenarios due to its overall width. Consider its load capacity and ground pressure characteristics for specific tasks, as they influence maneuverability and soil compaction.

Standard tires (ag

Front: 480/70R34. Rear: 520/85R46

DIMENSIONS & TIRES

The Challenger MT645C tractor features a substantial wheelbase of 122.2 inches, providing enhanced stability during operation—ideal for heavy tillage and fieldwork. With a weight range of 24,250 to 25,795 pounds, it offers excellent traction and reduces ground pressure, making it suitable for diverse soil conditions. The tire sizes of 480/70R34 in the front and 520/85R46 in the rear support efficient power transfer and load handling, although larger tires may require careful management of soil compaction in sensitive environments.

Wheelbas	122.2inches / 310cm
Weigh	24250 to 25795 pounds
Front tir	480/70R34
Rear tir	520/85R46

MT645C SERIAL LOCATION