| Manufacturer | Challenger |
| Price | - |
| Model | MT645E |
| Equipment Type | Row-Crop Tractors |
| Factory | Jackson, Minnesota, USA |
ENGINE DETAIL
The Challenger MT645E tractor features an AGCO POWER turbocharged 6-cylinder engine with a substantial displacement of 8.4L, providing a rated power of 240hp and a maximum power output of 270hp, ideal for demanding agricultural tasks. Its Tier IV emissions compliance through selective catalytic reduction (SCR) ensures reduced environmental impact while maintaining performance efficiency. Notably, the 12-volt electric starter enhances reliability, especially in cold-start scenarios, although the maintenance of SCR components can be a challenge over time.
| Description | AGCO POWER turbocharged with air-to-air intercooler diesel 6-cylinder 24-valve liquid-cooled |
| Displacemen | 512.6ci / 8.4L |
| Bore/Strok | 4.37x5.71inches / 111x 145 mm |
| Emission | Tier IV |
| Emission contro | selective catalytic reduction (SCR) |
| Powe | 240hp / 179.0kW |
| Maximum Powe | 270hp / 201.3kW |
| Rated RP | 2100 |
| Starte | electric |
| Starter volt | 12 |
CHALLENGER MT645E ENGINE
The Challenger MT645E is powered by an AGCO POWER 8.4L 6-cylinder diesel engine, providing robust performance ideal for demanding agricultural tasks. With a substantial fuel tank capacity of 166 gallons, the tractor minimizes frequent refueling during extended operations; however, it requires a DEF tank size of 15.8 gallons to meet emissions regulations, which may necessitate occasional top-ups based on usage. This setup strikes a balance between power and efficiency, making it suitable for heavy-duty applications but may contribute to increased operational complexity due to dual fluid management.
| Description | AGCO POWER 8.4L 6-cyl diesel |
| Fuel tan | 166gal / 628.3L |
| Exhaust fluid (DEF | 15.8gal / 59.8L |
TRANSMISSION
The Challenger MT645E features a Techstar Continuously Variable Transmission (CVT), providing seamless power delivery with infinite forward and reverse speeds, enhancing operational efficiency. Its two-range capability allows for optimized performance in varied field conditions, balancing speed and torque as needed. A potential challenge is the complexity of CVT maintenance, necessitating knowledgeable service support to prevent unexpected downtimes.
| Transmissio | Techstar CVT |
| Typ | continuously variable transmission (CVT) |
| Gear | infinite forward and reverse (2-range) |
CHALLENGER MT645E TRANSMISSION
The Challenger MT645E tractor, equipped with a continuously variable transmission (CVT), enhances operational efficiency by providing seamless speed adjustments without shifting, which optimizes engine performance and reduces fuel consumption. This setup allows for precise control during fieldwork, making it ideal for tasks requiring variable speeds, such as planting and tilling. However, the complexity of CVT systems may present maintenance challenges and potential repair costs compared to traditional gear transmissions.
| Description | continuously variable transmission (CVT) |
MECHANICAL
The Challenger MT645E tractor features a robust four-wheel drive system paired with hydraulic wet disc brakes, ensuring excellent traction and stopping power in diverse terrains. The optional OptiRide Plus hydraulic cab suspension enhances operator comfort by reducing vibrations, while the AgCommand and AUTO-GUIDE 3000 integration facilitates precision agriculture practices. However, the electro-hydraulic differential lock may require maintenance and expertise to optimize for various agricultural applications effectively.
| Description | Four-wheel drive/Hydraulic wet disc brakes/Cab standard with air-conditioning. Optional OptiRide Plus hydraulic cab suspension. AgCommand ready; AUTO-GUIDE 3000 |
| Differential loc | electro-hydraulic |
| Steerin | hydrostatic power |
HYDRAULICS
| Typ | closed center load sensing (CCLS) |
| Pressur | 2900psi / 200.0bar |
| Valve | 4 to 6 |
| Pump flo | 54gpm / 204.4lpm |
TRACTOR HITCH
| Rear Typ | III/IVN |
| Rear lift (at ends | 26455lbs / 11999kg |
| Drawba | Cat. 3/Cat 3 Heavy Duty (optional)/Cat 4 (optional) |
POWER TAKE-OFF (PTO)
| Rear PT | independent |
| Rear RP | 1000 / 1000E (1.75) |
DIMENSIONS & TIRES
The Challenger MT645E features a wheelbase of 122 inches (309 cm), enhancing stability and traction, especially in field conditions. Weighing 23,810 lbs (10,800 kg), it effectively minimizes soil compaction while maximizing power transfer during heavy-duty operations. Optimal for large agricultural applications, this tractor excels in tasks requiring stability under load, though its weight may affect maneuverability in tight spaces.
| Wheelbas | 122inches / 309cm |
| Weigh | 23810lbs / 10800kg |
ELECTRICAL
| Groun | negative |
| Charging syste | alternator |
| Charging amp | 240 (twin 120A) |
| Charging volt | 12 |
| Battery volt | 12 |