| Manufacturer | Challenger |
| Price | - |
| Model | MT685C |
| Equipment Type | Row-Crop Tractors |
| Factory | Beauvais, France |
CHALLENGER MT685C POWER
| Engine | 340hp / 253.5kW |
| PTO (claimed) | 320hp / 238.6kW |
ENGINE DETAIL
The Challenger MT685C features an AGCO SISU POWER 6-cylinder engine with an 8.4L displacement, delivering a robust maximum power of 370hp and impressive torque of 1136 lb-ft at 1500 RPM, making it suitable for heavy tillage and hauling tasks. Its use of an e3 SCR system effectively lowers NOx emissions, complying with Interim Tier 4 standards, although operators must manage diesel exhaust fluid (DEF) levels for optimal performance. While this tractor excels in power and efficiency, it might present challenges in maintenance due to the complexity of emissions systems, requiring knowledgeable operators to maximize its potential while minimizing environmental impact.
| 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). The system uses a diesel exhaust fluid that is injected into the exhaust gas. |
| Displacement | 512.6ci / 8.4L |
| Bore/Stroke | 4.37x5.71inches / 111x 145 mm |
| Emissions | Interim Tier 4 |
| Emission control | selective catalytic reduction (SCR) |
| Power | 340hp / 253.5kW |
| Maximum Power | 370hp / 275.9kW |
| Compression | 16.7:1 |
| Rated RPM | 2200 |
| Torque | 1136 lb-ft /1540.4 Nm |
| Torque RPM | 1500 |
| Starter type | electric |
CHALLENGER MT685C ENGINE
The Challenger MT685C is powered by an AGCO SISU POWER 8.4L 6-cylinder diesel engine, providing robust torque and high efficiency suitable for heavy agricultural tasks. With a notable fuel tank capacity of 155.9 gallons, it allows for extended operation between refuels, although managing the 7.9-gallon DEF tank for emissions can be a logistical challenge in remote areas. Pros include excellent fuel economy and power delivery, while cons may include increased operational complexity due to DEF requirements, particularly in regions with limited access to supply.
| Description | AGCO SISU POWER 8.4L 6-cyl diesel |
| Fuel tank | 155.9gal / 590.1L/182.3gal / 690.0L (without e3) |
| Exhaust fluid (DEF) | 7.9gal / 29.9L |
TRANSMISSION
The Challenger MT685C features a Dyna-VT continuously-variable transmission (CVT), allowing for an infinite number of forward and reverse gears which enhances operational flexibility and efficiency during varied field conditions. Advantages include smooth acceleration and deceleration without the interruption of shifting, optimizing engine performance and fuel economy. However, potential challenges may arise in terms of maintenance complexity and initial cost compared to traditional gear-driven transmissions.
| Transmission | Dyna-VT |
| Type | continuously-variable transmission |
| Gears | infinite forward and reverse |
MECHANICAL
The Challenger MT685C features a robust 4x4 MFWD chassis, enhancing traction on various terrains. Its continuously-variable transmission (CVT) offers smooth power delivery and fuel efficiency, making it ideal for both heavy tillage and transport tasks. The hydraulic wet disc brakes provide reliable stopping power under load, but maintenance may require attention due to potential wear in wet environments.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard with heat and air-conditioning. Optional heated seat, power adjustable mirrors, and automatic temperature control. |
| Transmission | continuously-variable transmission |
HYDRAULICS
| Type | closed center load sensing |
| Pressure | 2,901psi / 200.0bar |
| Valves | 4 to 6 |
| Pump flow | 26.4gpm / 99.9lpm |
| Total flow | 46.2gpm / 174.9lpm |
TRACTOR HITCH
| Rear Type | III, IV |
| Rear lift (at ends) | 26,460lbs / 12002kg |
| Rear lift (at 24 | 21,336lbs / 9678kg |
| Front Hitch | III |
| Front lift (at ends) | 11,020lbs / 4998kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic |
| Rear RPM | 1000E / 1000 (1.75)/540E / 1000 (1.375) |
| Front PTO | independent |
| Front RPM | 1000 (1.375) |
CHALLENGER MT685C TIRES
The Challenger MT685C features front tires sized 480/70R34 and rear tires sized 520/85R46, providing a balanced weight distribution and improved traction, particularly in agricultural applications. The larger rear tires enhance flotation and reduce soil compaction, making it ideal for field operations. However, the increased tire size may pose challenges in narrow row crops due to potential inter-row damage.
| Ag front | 480/70R34 |
| Ag rear | 520/85R46 |
DIMENSIONS
| Wheelbase | 122.2inches / 310cm |
| Length | 223.2inches / 566cm |
| Height (cab) | 133.1inches / 338cm |
| Shiping weight | 24,250lbs / 10999kg |
| Max weight | 38,890lbs / 17640kg |
DIMENSIONS & TIRES
The Challenger MT685C’s robust weight and extended wheelbase of 122.2 inches enhance stability and traction, making it suitable for heavy tillage and demanding field operations. Its front tires (480/70R34) and rear tires (520/85R46) provide a balanced approach to weight distribution and soil compaction, promoting efficient power transfer while minimizing environmental impact. However, the large tire sizes necessitate careful consideration of compatibility with existing implements and potential challenges in tighter agricultural spaces.
| Wheelbase | 122.2inches / 310cm |
| Weight | 24,250lbs / 10999kg |
| Front tire | 480/70R34 |
| Rear tire | 520/85R46 |
CHALLENGER ML99B LOADER
| Height (to pin) | 187inches / 474cm |
| Dump angle | 55° |
| Breakout force (at pin) | 7700lbs / 3492kg |
| Breakout force (at 800mm) | 6600lbs / 2993kg |
| Breakout force (bucket) | 10560lbs / 4790kg |
| Lift to full height (at pin) | 5610lbs / 2544kg |
| Lift to full height (at 800mm) | 4950lbs / 2245kg |
| Lift to 1.5m (at pin) | 7150lbs / 3243kg |
| Lift to 1.5m (at 800mm) | 6160lbs / 2794kg |
| Bucket width | 83inches / 210cm/95inches / 241cm/102inches / 259cm |
MT685C SERIAL NUMBERS
| Location | Serial number plate below the tractor cab door on the right side. |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 240*Two 120A alternators. |
| Batteries | 2 |
| Battery CCA | 775 |
| Battery volts | 12 |