| Manufacturer | Challenger |
| Price | - |
| Model | MT275B |
| Equipment Type | Compact Utility Tractors |
| Factory | Matsuyama, Japan |
CHALLENGER MT275B POWER
| Engine (gross) | 40.1hp / 29.9kW |
| Engine (net) | 38hp / 28.3kW |
| Gear PTO (claimed) | 31.550hp / 23.5kW |
| Hydro PTO (claimed) | 29.5hp / 22.0kW |
ENGINE DETAIL
The Challenger MT275B features a compact 1.5L Iseki E3CD-VTB10 turbocharged diesel engine, providing a gross power output of 40.1hp at 2600 RPM, making it suitable for small to medium farming tasks. Its indirect fuel injection and dual-stage dry air cleaner enhance fuel efficiency and engine longevity, though the 21.7:1 compression ratio indicates a sensitivity to fuel quality. The oil and coolant capacities of 5 quarts and 7.1 quarts respectively suggest ease of maintenance, but operators should monitor the idle range of 980-2860 RPM for optimal performance and to prevent undue engine strain.
| Description | Iseki E3CD-VTB10 turbocharged diesel 3-cylinder liquid-cooled |
| Displacement | 91.4ci / 1.5L |
| Bore/Stroke | 3.43x3.30inches / 87x 84mm |
| Power (gross) | 40.1hp / 29.9kW |
| Fuel system | indirect injection |
| Air cleaner | dual-stage dry |
| Pre-heating | glow plugs |
| Compression | 21.7:1 |
| Rated RPM | 2600 |
| Idle RPM | 980-2860 |
| Starter volts | 12 |
| Oil capacity | 5qts / 4.7L |
| Coolant capacity | 7.1qts / 6.7L |
CHALLENGER MT275B ENGINE
The Challenger MT275B tractor is equipped with a compact Iseki 1.5L 3-cylinder diesel engine, offering a balance of efficiency and power suitable for small to medium agricultural tasks. Its compact size allows for enhanced maneuverability in tight spaces, making it ideal for specialty crop farming or operations requiring high precision. However, its limited engine displacement may pose challenges in heavy-duty applications, requiring careful consideration of power demands.
| Description | Iseki 1.5L 3-cyl diesel |
TRANSMISSIONS OVERVIEW
The Challenger MT275B tractor features a hydrostatic transmission complemented by an 8-speed and a 12-speed partially synchronized transmission with a power shuttle, promoting smooth gear transitions and enhanced maneuverability. This design allows for precise speed control, ideal for applications requiring frequent direction changes, such as loader work or transporting materials. Potential challenges may include a steeper learning curve for operators new to hydrostatic systems, but the overall efficiency and operator comfort can significantly improve productivity in agricultural tasks.
| Description | hydrostatic 8-speed 12-speed partially synchronized with power shuttle |
TRANSMISSION 1
The Challenger MT275B features an infinite hydrostatic transmission with three ranges, offering precise speed control and smooth operation in varying field conditions. With an oil capacity of 32.8 quarts (31.0 liters), it supports efficient hydraulic system functionality, essential for heavy-duty tasks. However, hydrostatic systems may have increased maintenance requirements compared to gear-driven alternatives, which could impact long-term operational costs.
| Type | hydrostatic |
| Gears | infinite (3-range) forward and reverse |
| Oil capacity | 32.8qts / 31.0L |
SPEEDS 1
| Description | With 12.4-24 R1 rear tires |
TRANSMISSION 2
The Challenger MT275B features a SynchroShuttle transmission with 8 forward and reverse gears, allowing for versatile speed selection and smooth direction changes. The mechanical dry disc clutch requires regular maintenance, but offers reliable performance under load. With a moderate oil capacity of 32.8 quarts, operators should monitor fluid levels to maintain optimal transmission function, especially during extended usage or heavy-duty tasks.
| Transmission | SynchroShuttle |
| Gears | 8 forward and reverse |
| Clutch | mechanical dry disc |
| Oil capacity | 32.8qts / 31.0L |
| Description | Four non-synchronized gears in two non-synchronized ranges, with synchronized shuttle shift |
SPEEDS 2
| Description | With 12.4-24 R1 rear tires |
TRANSMISSION 3
The Challenger MT275B features a PowerShuttle transmission, allowing on-the-go shifting between forward and reverse without using the clutch, enhancing operational efficiency in tasks requiring quick direction changes. The partially synchronized design provides ease in in-range gear changes, although it may require clutch engagement for optimal performance during these shifts. With a 12-speed configuration and a 32.8 quarts oil capacity, this tractor is well-suited for versatile farming applications, though careful attention to transmission lubrication is essential for durability.
| Transmission | PowerShuttle |
| Type | partially synchronized with power shuttle |
| Gears | 12 forward and reverse |
| Clutch | dry main, wet shuttle |
| Oil capacity | 32.8qts / 31.0L |
| Description | Three ranges with four gears each. Transmission can be shifted from forward to reverse on the go, without the clutch. In-range gear changes can be made on the go with the clutch |
SPEEDS 3
| Description | With 12.4-24 R1 rear tires |
MECHANICAL
The Challenger MT275B tractor features a 4x4 MFWD configuration, providing enhanced traction in various terrains, making it ideal for heavy-duty agricultural applications. Its hydrostatic transmission with 8 to 12 speeds facilitates smooth operation and efficient power management, although maintenance may be more complex compared to standard manual transmissions. The mechanical rear differential lock enhances stability and control under load, while the wet disc brakes offer better performance and reduced wear in demanding conditions.
| Chassis | 4x4 MFWD 4WD |
| Final drives | spur gear |
| Differential lock | mechanical rear |
| Steering | power |
| Brakes | wet disc |
| Cab | Two-post foldable ROPS |
| Transmissions | hydrostatic 8-speed 12-speed partially synchronized with power shuttle |
CAPACITY
| Fuel | 10.6gal / 40.1L |
| Hydraulic system | 8.2gal / 31.0L |
HYDRAULICS
| Type | open center |
| Capacity | 8.2gal / 31.0L |
| Pressure | 2276psi / 156.9bar |
| Rear valves | 2 |
| Mid valves | 2 |
| Pump flow | 8.3gpm / 31.4lpm |
| Total flow | 12.7gpm / 48.1lpm (sync shuttle) 13.7gpm / 51.9lpm (power shuttle/hydro) |
| Steering flow | 4.4gpm / 16.7lpm (sync shuttle) 5.4gpm / 20.4lpm (power shuttle/hydro) |
| Steering press. | 2276psi / 156.9bar |
TRACTOR HITCH
| Rear Type | I |
| Control | position and response control optional top-link draft control |
| Rear lift (at ends) | 2800lbs / 1270kg |
| Rear lift (at 24 | 2535lbs / 1149kg |
| Rear Arms | fixed link ends ((sync shuttle) telescopic link ends (power shuttle/hydro) |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic wet disc |
| Rear RPM | 540 (1.375) |
| Mid PTO | independent |
| Mid RPM | 2000 (1.00) |
CHALLENGER MT275B TIRES
The Challenger MT275B tractor is versatile due to its tire options, allowing for agricultural, lawn/turf, and industrial applications. The agricultural rear tires (12.4-24/13.6-24) provide good traction and stability for fieldwork, while the turf options (41x14.00-20) are suitable for delicate surfaces, minimizing soil compaction. However, the selection may necessitate compromises in specific operational efficiencies depending on the chosen tire type and terrain, affecting performance in specialized tasks.
| Ag front | 8-16 |
| Ag rear | 12.4-24/13.6-24 |
| Lawn/turf front | 27x8.50-15 |
| Lawn/turf rear | 41x14.00-20 |
| Industrial front | 10-16.5 |
| Industrial rear | 14.9-24 |
DIMENSIONS
| Wheelbase | 69.7inches / 177cm |
| Length | 121inches / 307cm |
| Width | 62.2inches / 157cm *Minimum width |
| Height (ROPS) | 87.4inches / 221cm |
| Ground clearance | 14.1inches / 35cm |
| Front axle | Flange: 48.8inch length / 1239mm |
| Rear axle | Flange: 44.6inch length / 1132mm |
| Front tread | 45inches / 114cm |
CHALLENGER MT275B WEIGHT
| 3169lbs / 1437kg | |
| Max capacity | 6614lbs / 3000kg |
| Max front axle | 3968lbs / 1799kg |
| Max rear axle | 3968lbs / 1799kg |
DIMENSIONS & TIRES
The Challenger MT275B features a compact wheelbase of 69.7 inches, enhancing maneuverability in tight agricultural spaces, which is advantageous for operations like orchard and vineyard management. Weighing 3169 lbs, it provides a balanced weight distribution critical for stability when using front-end implements. However, the smaller tire dimensions (front: 8-16, rear: 12.4-24) may limit traction on uneven terrain, potentially requiring careful route planning in challenging conditions.
| Wheelbase | 69.7inches / 177cm |
| Weight | 3169lbs / 1437kg |
| Front tire | 8-16 |
| Rear tire | 12.4-24 |
ATTACHMENT OVERVIEW
| Description | Front-end loader Backhoe |
CHALLENGER ML30B LOADER
| Height (to pin) | 102inches / 259cm |
| Clearance, dumped bucket | 80inches / 203cm |
| Dump reach | 15inches / 38cm |
| Dump angle | 47° |
| Reach at ground | 58inches / 147cm |
| Rollback angle | 30° |
| Breakout force (at pin) | 2720lbs / 1233kg |
| Lift to full height (at pin) | 1632lbs / 740kg |
| Lift to full height (at 500mm) | 1112lbs / 504kg |
| Lift to 1.5m (at 500mm) | 1485lbs / 673kg |
| Bucket width | 66inches / 167cm |
| Raise time to height | 3.5 s |
| Bucket dump time | 3.1 s |
| Lowering time | 2.1 s |
| Rollback time | 1.9 s |
CHALLENGER MH20B BACKHOE
| Backhoe type | Challenger MH20B Backhoe |
| Transport height | 75inches / 190cm |
| Bucket width | 10inches / 25cm 12inches / 30cm 16inches / 40cm 24inches / 60cm 37inches / 93cm |
| Digging depth | 90inches / 228cm |
| Reach from pivot | 112inches / 284cm |
| Bucket Rotation | 165 |
| Swing Arc | 180 |
| Bucket force | 3250lbs / 1474kg |
| Dipperstick force | 1900lbs / 861kg |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 40 |
| Battery CCA | 630 |
| Battery volts | 12 |