Challenger
Challenger MT445B
The Challenger MT445B is a utility tractor produced from 2004 to 2013 as part of the MT400B Series. It was built in Beauvais, France by Challenger, a part of AGCO. The tractor is similar to the Massey Ferguson 5445. It features a Caterpillar 4.4L 4-cylinder turbocharged diesel engine, producing 85 hp (63.4 kW). The transmission is an Autopower IV 16-speed four speed power shift with a wet disc clutch. The tractor offers two- or four-wheel drive options, hydrostatic power steering, and hydraulic wet disc brakes. It has a wheelbase of 97 inches (246 cm) and weighs between 8,840 lbs (2WD) and 9,445 lbs (4WD). The PTO is independent with electro-hydraulic wet disc clutch and offers multiple speed options. The tractor includes advanced hydraulics with open and closed center systems and electronic top-link draft control for the rear hitch. The MT445B is part of a series including the MT425B and MT455B models.
Power85 hp
Founded2004 - 2013
ModelMT445B
Technical Specifications
Detailed specifications and technical data for Challenger MT445B
Power
| Engine power | 85 hp (63.4 kW) |
|---|---|
| PTO (tested) | 75.9 hp (56.6 kW) |
| PTO (claimed) | 70 hp (52.2 kW) |
| Drawbar (tested) | 60.5 hp (45.1 kW) |
Tires
| Ag rear | 480/70R38 |
|---|---|
| Ag front | 10.00-16 (2WD), 13.6R28 (4WD) |
Engine
| Type | turbocharged diesel |
|---|---|
| Model | Caterpillar 3054T |
| Power | 85 hp (63.4 kW) |
| Cooling | liquid-cooled vertical |
| Cylinders | 4-cylinder |
| Emissions | Tier 2 |
| Rated RPM | 2200 |
| Air cleaner | dual paper elements |
| Bore/Stroke | 4.134x5.00 inches (105 x 127 mm) |
| Displacement | 268 ci (4.4 L) |
| Starter volts | 12 |
| Compression ratio | 17.5:1 |
| Alternative branding | Perkins 1104C depending on market |
Dimensions
| Weight | 8,840 lbs (2WD) (4009 kg), 9,445 lbs (4WD) (4284 kg) |
|---|---|
| Wheelbase | 97 inches (246 cm) |
| Flange rear axle | yes |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
Hydraulics
| Valves | 2 to 4 |
|---|---|
| Cab Type | closed center load sensing |
| Pressure | 2900 psi (200.0 bar) |
| Pump flow | 26.4 gpm (open center) (99.9 lpm), 29 gpm (CCLS) (109.8 lpm) |
| ROPS Type | open center |
Mechanical
| ROPS | ROPS. Cab optional with air-conditioning. |
|---|---|
| Drive | Two- or four-wheel drive |
| Brakes | Hydraulic wet disc brakes |
| Steering | hydrostatic power |
| Final drives | inboard planetary |
| Differential lock | electro-hydraulic |
Production
| Type | Utility tractor |
|---|---|
| Notes | The Challenger MT445B is similar to the Massey Ferguson 5445. |
| Series | MT400B Series |
| Built in | Beauvais, France |
| Years made | 2004 - 2013 |
Transmission
| Type | four speed power shift |
|---|---|
| Gears | 16 forward and reverse |
| Notes | Four power shift gears in four ranges. |
| Clutch | wet disc |
| Transmission | Autopower IV |
Tractor hitch
| Control | electronic top-link draft control |
|---|---|
| Rear Arms | telescopic stabilizers and link ends |
| Rear Type | II |
| Rear Lift (at 24"/610mm) | 7285 lbs (3304 kg) |
Power Take-off (PTO)
| Clutch | electro-hydraulic wet disc |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540/1000, 540/540E/1000/1000E |