Introduction
Challenger MT445B Utility Tractor
The Challenger MT445B is a utility tractor manufactured in Beauvais, France, by AGCO. Produced between 2004 and 2013, this model is part of the MT400B series and shares structural similarities with the Massey Ferguson 5445, serving as a versatile machine for diverse agricultural operations.
Engine and Performance
The tractor is powered by a Caterpillar 3054T turbocharged diesel engine, also branded as the Perkins 1104C in certain markets. This liquid-cooled, 4-cylinder unit features a 4.4 L displacement and produces a rated power of 85 hp at 2200 RPM. It utilizes a dual paper element air cleaner and is compliant with Tier 2 emissions standards.
Transmission and Drivetrain
Equipped with the Autopower IV transmission system, the MT445B offers 16 forward and 16 reverse gears. The system features a four-speed power shift across four ranges, managed by an electro-hydraulic wet disc clutch. The tractor is available in either two- or four-wheel drive configurations, supported by inboard planetary final drives and an electro-hydraulic differential lock.
Hydraulics and Hitch
The hydraulic system is a closed-center load-sensing (CCLS) setup providing a pump flow of 29 gpm (109.8 lpm) at 2900 psi. It supports 2 to 4 valves. The rear Category II hitch includes electronic top-link draft control and telescopic stabilizers, capable of lifting up to 7,285 lbs at 24 inches from the lift point.
Operator Environment and Dimensions
The machine features hydrostatic power steering and hydraulic wet disc brakes for precise control. It comes standard with a ROPS structure, with an air-conditioned cab available as an option. The tractor has a 97-inch wheelbase and weighs approximately 8,840 lbs in 2WD configuration or 9,445 lbs in 4WD.
Conclusion
The Challenger MT445B is a robust utility tractor suited for varied field work, offering a balance of mechanical power, hydraulic capacity, and flexible transmission options. Its design emphasizes operator adaptability through its optional cab configurations and multiple PTO speed settings.
Production Information of Challenger, MT445B
- The Challenger MT445B is similar to the Massey Ferguson 5445.
- Utility tractor
- Built in Beauvais, France
| Manufacturer | Challenger (a part of AGCO) |
|---|
Dimension and Tires Information of Challenger, MT445B
- Flange rear axle
| Wheelbase | 97 inches [246 cm] |
|---|---|
| Weight | 8,840 lbs (2WD) [4009 kg] |
| Weight(optional) | 9,445 lbs (4WD) [4284 kg] |
| Ag front | 10.00-16 (2WD) |
|---|---|
| Ag front(optional) | 13.6R28 (4WD) |
| Ag rear | 480/70R38 |
Engine Specifications of Challenger, MT445B
- Caterpillar 3054T
- This engine was alternative branded as a Perkins 1104C depending on market.
- Liquid-cooled vertical
- Turbocharged diesel
- 4-cylinder
| Compression | 17.5:1 |
|---|---|
| Emissions | Tier 2 |
| Displacement | 268 ci [4.4 L] |
| Starter volts | 12 |
| Rated RPM | 2200 |
| Air cleaner | Dual paper elements |
| Power | 85 hp [63.4 kW] |
| Bore/Stroke | 4.134x5.00 inches [105 x 127 mm] |
Transmission Information of Challenger, MT445B
Transmission variants 1
- Four power shift gears in four ranges.
| Transmission | Autopower IV |
|---|---|
| Clutch | Wet disc |
| Type | Four speed power shift |
| Gears | 16 forward and reverse |
Mechanical Specs of Challenger, MT445B
- Two- or four-wheel drive
- Hydraulic wet disc brakes
- ROPS. Cab optional with air-conditioning.
| Steering | Hydrostatic power |
|---|---|
| Final drives | Inboard planetary |
| Differential lock | Electro-hydraulic |
Power Information of Challenger, MT445B
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 540/540E/1000/1000E |
| Clutch | Electro-hydraulic wet disc |
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of Challenger, MT445B
| ROPS Type | Open center |
|---|---|
| Pump flow | 26.4 gpm (open center) [99.9 lpm] |
| Valves | 2 to 4 |
| Cab Type | Closed center load sensing |
| Cab Type(optional) | 29 gpm (CCLS) [109.8 lpm] |
| Pressure | 2900 psi [200.0 bar] |
Three-Point Hitch of Challenger, MT445B
| Rear Type | II |
|---|---|
| Rear Arms | Telescopic stabilizers and link ends |
| Control | Electronic top-link draft control |
| Rear lift (at 24"/610mm) | 7285 lbs [3304 kg] |
Electrical System of Challenger, MT445B
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
With 85 HP, the Challenger MT445B sits between MT425B (75 HP) and MT455B (95 HP) in Challenger's range. Its power puts it in the 56th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT445B have?
The Challenger MT445B delivers 85 HP.
What years was the Challenger MT445B produced?
The Challenger MT445B was produced in 2004-2013.
What engine does the Challenger MT445B have?
The Challenger MT445B is powered by a Turbocharged diesel, 4-cylinder engine.
What transmission does the Challenger MT445B use?
The Challenger MT445B uses a Autopower IV transmission.
How much does the Challenger MT445B weigh?
The Challenger MT445B weighs 8,840 lbs (2WD) [4009 kg].
Is the Challenger MT445B 4WD?
The Challenger MT445B is available in 2WD/4WD.