| Manufacturer | Challenger |
| Price | - |
| Model | MT655 |
| Equipment Type | Row-Crop Tractors |
| Factory | Beauvais, France |
OCED TRACTOR TEST 1770 2
| Description | Diesel 18-speed 4WD April 1998 - May 1998, Link: OCED Tractor Test 1770 file PTO performance Drawbar performance Gear 10 used for power test. Gear 6 used for pull test |
| Max power | 165.1hp / 123.1kW |
| Fuel use | 13.2gal/hour / 50.0l/hour |
| Power at rated engine speed | 205.4hp / 153.2kW |
| Power at rated PTO speed | 212.3hp / 158.3kW |
| Max pull | 20765lbs / 9419kg |
CHALLENGER MT655 POWER
| PTO (claimed) | 200hp / 149.1kW |
| Drawbar (tested) | 165.1hp / 123.1kW |
| PTO (tested) | 216.7hp / 161.6kW |
ENGINE DETAIL
The Challenger MT655 features a robust Sisu turbocharged diesel engine with a substantial displacement of 8.4L, providing high torque at lower RPMs, making it suitable for heavy-duty applications. Its 16.5:1 compression ratio enhances fuel efficiency and power output, while the dual paper element air cleaner improves engine longevity by ensuring optimal air filtration. However, the 2200 RPM rated speed may limit high-speed operations, so this tractor is ideally suited for medium to heavy agricultural tasks rather than high-speed transport duties.
| Description | Sisu turbocharged aftercooled diesel 6-cylinder liquid-cooled vertical |
| Displacement | 513ci / 8.4L |
| Bore/Stroke | 4.370x5.709inches / 111x 145 mm |
| Air cleaner | dual paper elements |
| Compression | 16.5:1 |
| Rated RPM | 2200 |
| Starter volts | 12 |
CHALLENGER MT655 ENGINE
The Challenger MT655 is powered by an efficient Sisu 8.4L 6-cylinder diesel engine, providing robust torque and reliability, ideal for demanding agricultural tasks. With a substantial 120-gallon (454.2L) fuel tank, it supports extended operation without frequent refueling, enhancing productivity in large-scale farming scenarios. However, the weight of the fuel tank can impact maneuverability on soft terrain, making proper load management essential.
| Description | Sisu 8.4L 6-cyl diesel |
| Fuel tank | 120gal / 454.2L |
TRANSMISSION
The Challenger MT655 utilizes a power shift transmission with 18 forward and 6 reverse gears, offering versatility for various field operations and terrain conditions. The electro-hydraulic wet disc clutch ensures smooth engagement and enhanced durability, reducing wear in challenging conditions. However, the complexity of the system may present maintenance challenges, requiring skilled technicians to ensure optimal performance.
| Type | power shift |
| Gears | 18 forward and 6 reverse |
| Clutch | electro-hydraulic wet disc |
MECHANICAL
The Challenger MT655 features a 4WD MFWD chassis, providing excellent traction and stability in varied terrains, making it ideal for heavy agricultural tasks. The hydraulic wet disc brakes enhance stopping power and durability, reducing maintenance needs compared to dry systems. Its 18-speed power shift transmission enables seamless gearbox transitions, optimizing operational efficiency across a range of speeds and workloads.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard with air-conditioning. |
| Transmission | 18-speed power shift |
HYDRAULICS
| Type | closed center pressure flow compensated (PFC) |
| Pressure | 2900psi / 200.0bar |
| Valves | 4 |
| Total flow | 29gpm / 109.8lpm/39gpm / 147.6lpm |
TRACTOR HITCH
| Rear Type | III |
| Rear lift (at 24 | 19700lbs / 8935kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000 |
| Engine RPM | 1000@2091 |
CHALLENGER MT655 TIRES
The Challenger MT655 features Ag front tires (600/70R28) and rear tires (650/85R38), offering a robust combination for enhanced traction and stability in field applications. The larger rear tire size improves weight distribution and reduces soil compaction, making it ideal for tillage and heavy-duty operations. However, the specific tire dimensions may limit compatibility with certain implements, so ensuring alignment with operational requirements is crucial.
| Ag front | 600/70R28 |
| Ag rear | 650/85R38 |
DIMENSIONS
| Wheelbase | 121inches / 307cm |
| Length | 203inches / 515cm |
| Width | 98.2inches / 249cm *Minimum width |
| Height (cab) | 121inches / 307cm |
| Shiping weight | 21500lbs / 9752kg |
DIMENSIONS & TIRES
The Challenger MT655 tractor, with a wheelbase of 121 inches, provides stability for heavy-duty tasks, beneficial for operations on uneven terrain. Weighing 21,500 lbs, it offers a robust platform for towing and cultivating, though its weight may limit mobility on softer ground. The tire specifications (front: 600/70R28, rear: 650/85R38) enhance traction and flotation, making it suitable for various applications in agriculture and land management, but users should be aware of potential soil compaction from its size.
| Wheelbase | 121inches / 307cm |
| Weight | 21500lbs / 9752kg |
| Front tire | 600/70R28 |
| Rear tire | 650/85R38 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery volts | 12 |