| Manufacturer | Challenger |
| Price | - |
| Model | MT455 |
| Equipment Type | Utility Tractors |
| Factory | England |
OCED TRACTOR TEST 1802 2
| Description | Diesel 12-speed 4WD June 1998 - November 1998, Link: OCED Tractor Test 1802 file PTO performance Drawbar performance Gear 2M used for power test Gear 1L used for pull test |
| Max power | 63.2hp / 47.1kW |
| Fuel use | 5.2gal/hour / 19.7l/hour |
| Power at rated engine speed | 75.2hp / 56.1kW |
| Power at rated PTO speed | 77.5hp / 57.8kW |
| Max pull | 8950lbs / 4059kg |
CHALLENGER MT455 POWER
| PTO (claimed) | 75hp / 55.9kW |
| Drawbar (tested) | 63.2hp / 47.1kW |
| PTO (tested) | 77.9hp / 58.1kW |
ENGINE DETAIL
The Challenger MT455 is powered by a Perkins 3054 DITA turbocharged diesel engine, offering a robust performance with a 4-cylinder configuration and a displacement of 4.0L, suitable for various agricultural tasks. With a compression ratio of 17.3:1 and a rated RPM of 2200, it delivers a balance of torque and efficiency, while the dual paper element air cleaner ensures optimal air filtration and engine longevity. The use of a thermostart pre-heating system enhances cold start reliability, making it advantageous for operations in cooler climates, although regular maintenance of the air cleaner and pre-heating system is essential to ensure peak performance.
| Description | Perkins 3054 DITA turbocharged diesel 4-cylinder liquid-cooled |
| Displacement | 243ci / 4.0L |
| Bore/Stroke | 3.937x5.00inches / 100x 127mm |
| Air cleaner | dual paper elements |
| Pre-heating | thermostart |
| Compression | 17.3:1 |
| Rated RPM | 2200 |
| Starter volts | 12 |
CHALLENGER MT455 ENGINE
The Challenger MT455, powered by a Perkins 4.0L 4-cylinder diesel engine, offers an efficient fuel capacity with a total of 50 gallons (189.3L) when considering both the ROPS and cab configurations. Advantages include extended operational time without refueling, ideal for large fieldwork scenarios. However, operators should be aware of the added weight and size with the cab option, which may impact maneuverability in tighter spaces.
| Description | Perkins 4.0L 4-cyl diesel |
| ROPS Fuel tank | 29.1gal / 110.1L |
| Cab Fuel tank | 34gal / 128.7L 50gal / 189.3L with cab |
TRANSMISSIONS OVERVIEW
The Challenger MT455 tractor features a versatile 24-speed power shuttle transmission, allowing seamless direction changes without clutch engagement, which enhances productivity in varied terrain. Its 12-speed syncromesh and mechanical shuttle options provide operators with precise control and adaptability, crucial for tasks requiring fine adjustments, such as tilling or planting. However, the complexity of the transmission system may require additional training for operators to fully utilize its capabilities effectively.
| Description | 24-speed power shuttle 12-speed syncromesh 12-speed mechanical shuttle |
TRANSMISSION 1
The Challenger MT455's power shuttle transmission offers smooth gear transitions with 24 forward and reverse speeds, enhancing operational flexibility in varied applications. The wet disc clutch system minimizes wear and allows for more consistent engagement, contributing to improved durability and reduced downtime. This setup is particularly advantageous for tasks requiring frequent direction changes, such as precision tillage or loader operations, but may require additional maintenance compared to traditional dry clutches.
| Type | power shuttle |
| Gears | 24 forward and reverse |
| Clutch | wet disc |
TRANSMISSION 2
The Challenger MT455 features a syncromesh transmission, providing smooth gear shifting, which enhances operational efficiency in various field conditions. With 12 forward and 4 reverse gears, it offers versatility for both high-speed road travel and slow-speed fieldwork. However, the syncromesh system may not deliver the same level of durability under heavy load conditions as more robust transmission types, potentially impacting performance in demanding tasks.
| Type | syncromesh |
| Gears | 12 forward and 4 reverse |
TRANSMISSION 3
The Challenger MT455 features a mechanical shuttle transmission with 12 forward and reverse gears, facilitating efficient direction changes without stopping. This setup enhances productivity in applications requiring frequent direction reversals, such as loader work or tillage. However, mechanical shuttles can be less convenient than power shuttles in scenarios involving repeated directional switching at higher speeds.
| Type | mechanical shuttle |
| Gears | 12 forward and reverse |
MECHANICAL
The Challenger MT455 tractor offers versatile drivetrain configurations with 2WD and 4WD options, enhancing traction for various applications. The hydraulic wet disc braking system provides reliable stopping power under heavy loads, while the power steering improves maneuverability, particularly in tight spaces. Users can benefit from the 24-speed power shuttle for precise speed control in diverse field conditions, but the complexity of multiple transmission types may require thorough training for optimal operation.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Two-post folding ROPS. Cab available with air-conditioning |
| Transmissions | 24-speed power shuttle 12-speed syncromesh 12-speed mechanical shuttle |
HYDRAULICS
| Type | open center |
| Pressure | 3046psi / 210.0bar |
| Valves | 2 to 4 |
| SCV flow | 10gpm / 37.9lpm |
| Total flow | 25gpm / 94.6lpm |
TRACTOR HITCH
| Rear Type | II |
| Control | electronic draft control |
| Rear lift (at 24 | 4100lbs / 1859kg 6200lbs / 2812kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
CHALLENGER MT455 TIRES
The Challenger MT455, equipped with Ag Front 14.9R34 and Ag Rear 18.4R34 tires, provides optimal traction and stability for various field operations, particularly in row-crop applications. The tire profile allows for improved floatation in softer soils while maintaining a narrower footprint to reduce soil compaction. However, operators should consider potential challenges in maneuverability in tight spaces due to the larger rear tire size, particularly during transport or field turns.
| Ag front | 14.9R34 |
| Ag rear | 18.4R34 |
DIMENSIONS
| Wheelbase | 93inches / 236cm |
| Length | 163inches / 414cm |
| Width | 81inches / 205cm |
| Height (ROPS) | 104inches / 264cm |
| Height (cab) | 101inches / 256cm |
CHALLENGER MT455 WEIGHT
| 2WD ROPS | 6211lbs / 2817kg |
| 4WD ROPS | 6546lbs / 2969kg |
| 2WD Cab | 7735lbs / 3508kg |
| 4WD Cab | 8287lbs / 3758kg |
DIMENSIONS & TIRES
The Challenger MT455 tractor features a wheelbase of 93 inches, providing stability for heavy-duty tasks. Weighing between 6,211 to 8,287 pounds, its overall mass allows for optimal traction but may limit mobility on softer terrain. The front and rear tire specifications (14.9R34 and 18.4R34, respectively) afford a balanced load distribution, enhancing its performance in plowing and towing applications, but may require careful selection of tire pressure for different soil conditions to avoid compaction.
| Wheelbase | 93inches / 236cm |
| Weight | 6211 to 8287 pounds |
| Front tire | 14.9R34 |
| Rear tire | 18.4R34 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery volts | 12 |