| Manufacturer | Challenger |
| Price | - |
| Model | MT255B |
| Equipment Type | Compact Utility Tractors |
| Factory | Matsuyama, Japan |
CHALLENGER MT255B POWER
| Engine (gross) | 28.4hp / 21.2kW |
| Engine (net) | 28hp / 20.9kW |
| Gear PTO (claimed) | 24.2hp / 18.0kW |
| Hydro PTO (claimed) | 22.3hp / 16.6kW |
ENGINE DETAIL
The Challenger MT255B features a compact Iseki E3CF diesel engine with 28.4 horsepower, suitable for small to mid-sized agricultural applications. Its indirect injection system offers efficient fuel atomization, enhancing performance at rated RPM of 2500, though users may experience challenges in cold starting without proper glow plug maintenance. With a relatively low oil capacity of 3.8 quarts, routine servicing is critical to maintain optimal engine health and longevity.
| Description | Iseki E3CF diesel 3-cylinder liquid-cooled |
| Displacement | 89.3ci / 1.5L |
| Bore/Stroke | 3.39x3.30inches / 86x 84mm |
| Power (gross) | 28.4hp / 21.2kW |
| Fuel system | indirect injection |
| Air cleaner | dual-stage dry |
| Pre-heating | glow plugs |
| Rated RPM | 2500 |
| Idle RPM | 930-2750 |
| Starter volts | 12 |
| Oil capacity | 3.8qts / 3.6L |
| Coolant capacity | 5.8qts / 5.5L |
CHALLENGER MT255B ENGINE
The Challenger MT255B is powered by a compact Iseki 1.5L 3-cylinder diesel engine, offering efficient fuel consumption and lower operating costs, ideal for small to medium-sized farms. Its design allows for high torque at low RPMs, enhancing its performance in heavy tillage or planting tasks. However, the limited engine displacement may challenge long-duration tasks requiring significant power output, so consider its capacity for specific field operations.
| Description | Iseki 1.5L 3-cyl diesel |
TRANSMISSIONS OVERVIEW
The Challenger MT255B tractor features a hydrostatic 9-speed transmission, offering seamless speed adjustments without the need for clutch engagement, enhancing operator comfort and efficiency in varied tasks. The hydrostatic system provides precise control, making it ideal for Loader operations and other applications requiring quick responses. However, this type of transmission may lead to slightly reduced efficiency at higher speeds compared to traditional gear systems, making it essential to assess the operational requirements for optimal usage.
| Description | hydrostatic 9-speed gear |
TRANSMISSION 1
The Challenger MT255B features a hydrostatic transmission, providing infinite speed control across three ranges in both forward and reverse, enhancing maneuverability in varied field conditions. Its oil capacity of 30.6 quarts ensures efficient lubrication and cooling, crucial for maintaining performance during prolonged operations. However, users should be aware of potential higher maintenance costs associated with hydrostatic systems compared to traditional gear transmissions.
| Type | hydrostatic |
| Gears | infinite (3-range) forward and reverse |
| Oil capacity | 30.6qts / 29.0L |
SPEEDS 1
| Description | With 12.5 / 80-18 rear tires |
TRANSMISSION 2
The Challenger MT255B features a dry dual-stage clutch and a gear system with 9 forward and 3 reverse gears, allowing for precise speed control across various terrains. The three non-synchronized gears (1-3) may present a challenge when shifting under load, but they enhance durability in rigorous conditions. With an oil capacity of 19 quarts (18.0L), maintaining optimal lubrication is crucial for performance; ensure regular checks to prevent overheating and prolong the tractor's lifespan.
| Type | gear |
| Gears | 9 forward and 3 reverse |
| Clutch | dry dual stage |
| Oil capacity | 19qts / 18.0L |
| Description | Three non-synchronized gears (1-3), plus reverse (R) in three non-synchronized ranges |
SPEEDS 2
| Description | With 12.5 / 80-18 rear tires |
MECHANICAL
The Challenger MT255B features a 4x4 MFWD configuration, providing excellent traction and stability across various terrains. Its hydrostatic transmission combined with a 9-speed gear offers smooth and responsive power delivery, ideal for varied field operations and efficient speed adjustments. The mechanical rear differential lock enhances traction in challenging conditions, while wet disc brakes ensure reliable stopping power, especially beneficial during heavy loads or steep descents.
| Chassis | 4x4 MFWD 4WD |
| Final drives | spur gear |
| Differential lock | mechanical rear |
| Steering | power |
| Brakes | wet disc |
| Cab | Two-post foldable ROPS |
| Transmissions | hydrostatic / 9-speed gear |
CAPACITY
| Fuel | 7.9gal / 29.9L |
| Gear Hydraulic system | 4.8gal / 18.2L |
| Hydro Hydraulic system | 7.7gal / 29.1L |
HYDRAULICS
| Type | open center |
| Gear Capacity | 4.8gal / 18.2L |
| Hydro Capacity | 7.7gal / 29.1L |
| Pressure | 2134psi / 147.1bar |
| Rear valves | 2 |
| Mid valves | 2 |
| Pump flow | 7.4gpm / 28.0lpm |
| Total flow | 10.0gpm / 37.9lpm |
| Steering flow | 2.6gpm / 9.8lpm |
| Steering press. | 1711psi / 118.0bar |
TRACTOR HITCH
| Rear Type | I |
| Control | position and response control top-link draft control, with hydrostatic transmission |
| Rear lift (at ends) | 2425lbs / 1099kg |
| Rear lift (at 24 | 1610lbs / 730kg |
| Rear Arms | fixed link ends |
POWER TAKE-OFF (PTO)
| Gear Rear PTO | live |
| Hydro Rear PTO | independent |
| Gear Clutch | dry disc |
| Hydro Clutch | electro-hydraulic wet disc |
| Rear RPM | 540 (1.375) |
| Gear Mid PTO | live |
| Hydro Mid PTO | independent |
| Mid RPM | 2000 (1.00) |
CHALLENGER MT255B TIRES
The Challenger MT255B tractor is equipped with versatile tire options, allowing for tailored performance across agricultural, lawn/turf, and industrial applications. The agricultural tire sizes (7-14 front, 9.5-24 rear) maximize traction in fieldwork, while the lawn/turf and industrial specifications cater to different terrain needs, enhancing maneuverability and reducing soil compaction. However, the selection of tire type can affect the tractor's performance, stability, and loading capacity, necessitating careful consideration depending on operational demands.
| Ag front | 7-14 |
| Ag rear | 9.5-24 |
| Lawn/turf front | 24x8.50-14 |
| Lawn/turf rear | 36x13.50-15 |
| Industrial front | 25x8.50-14 |
| Industrial rear | 12.50 / 80-18 |
DIMENSIONS
| Wheelbase | 65.5inches / 166cm |
| Length | 112.4inches / 285cm |
| Width | 50.6inches / 128cm *Minimum width |
| Height (ROPS) | 80.7inches / 204cm |
| Ground clearance | 10inches / 25cm |
| Front axle | Flange: 39.34 inch length /999mm |
| Rear axle | Flange: 37.4 inch length /949mm |
| Front tread | 39.6inches / 100cm |
| Rear tread | 37.6inches / 95cm |
CHALLENGER MT255B WEIGHT
| Gear Shipping | 2370lbs / 1075kg |
| Hydro Shipping | 2423lbs / 1099kg |
| Max capacity | 4145lbs / 1880kg |
| Max front axle | 1929lbs / 874kg |
| Max rear axle | 2216lbs / 1005kg |
DIMENSIONS & TIRES
The Challenger MT255B features a compact wheelbase of 65.5 inches, enhancing maneuverability in tight spaces, making it suitable for small farms or horticultural applications. Its weight range of 2370 to 2423 pounds provides stability during operation, but may limit traction on uneven terrains without optimal tire specifications; ensuring proper tire pressure in the 7-14 front and 9.5-24 rear sizes is crucial for performance. Pros include versatility for various implements, while potential challenges involve managing weight distribution for heavy-duty tasks.
| Wheelbase | 65.5inches / 166cm |
| Weight | 2370 to 2423 pounds |
| Front tire | 7-14 |
| Rear tire | 9.5-24 |
ATTACHMENT OVERVIEW
| Description | Front-end loader Backhoe |
CHALLENGER ML20B LOADER
| Height (to pin) | 90inches / 228cm |
| Clearance, dumped bucket | 71inches / 180cm |
| Dump reach | 16inches / 40cm |
| Dump angle | 44° |
| Reach at ground | 52inches / 132cm |
| Rollback angle | 17° |
| Breakout force (at pin) | 2387lbs / 1082kg |
| Lift to full height (at pin) | 1188lbs / 538kg |
| Lift to full height (at 500mm) | 813lbs / 368kg |
| Lift to 1.5m (at 500mm) | 1139lbs / 516kg |
| Bucket width | 51inches / 129cm |
| Raise time to height | 5.5 s |
| Bucket dump time | 2.2 s |
| Lowering time | 3.2 s |
| Rollback time | 3 s |
CHALLENGER MH10B BACKHOE
| Backhoe type | Challenger MH10B Backhoe |
| Transport height | 63.8inches / 162cm |
| Bucket width | 10inches / 25cm 12inches / 30cm 16inches / 40cm |
| Digging depth | 78inches / 198cm |
| Reach from pivot | 102inches / 259cm |
| Bucket Rotation | 165 |
| Swing Arc | 180 |
| Bucket force | 2400lbs / 1088kg |
| Dipperstick force | 1450lbs / 657kg |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 40 |
| Battery CCA | 582 |
| Battery volts | 12 |