Challenger
Challenger MT645
The Challenger MT645 is a row-crop tractor produced from 2002 to 2003 as part of the MT600 Series. Built in Beauvais, France, it is similar to the Massey Ferguson 8260. It features a Sisu 7.4L 6-cylinder turbocharged aftercooled diesel engine, an 18-speed power shift transmission, and four-wheel drive. The tractor includes power steering, hydraulic wet disc brakes, and a cab with air-conditioning. It has a PTO claimed power of 180 hp and tested power of 184.49 hp. The MT645 has a wheelbase of 121 inches, weighs 19000 lbs, and uses 14.9R30 front and 18.4R42 rear tires.
Power200 hp[P]
Founded2002 - 2003
ModelMT645
Technical Specifications
Detailed specifications and technical data for Challenger MT645
Power
| PTO (tested) | 184.49 hp (137.6 kW) |
|---|---|
| PTO (claimed) | 180 hp (134.2 kW) |
Tires
| Ag rear | 18.4R42 |
|---|---|
| Ag front | 14.9R30 |
Engine
| Make | Sisu |
|---|---|
| Type | turbocharged aftercooled diesel |
| Cooling | liquid-cooled vertical |
| Cylinders | 6-cylinder |
| Rated RPM | 2200 |
| Air cleaner | dual paper elements |
| Bore/Stroke | 4.251x5.278 inches (108 x 134 mm) |
| Displacement | 449 ci (7.4 L) |
| Starter volts | 12 |
| Compression ratio | 16.5:1 |
Dimensions
| Width | 98.2 inches (249 cm) *Minimum width |
|---|---|
| Length | 203 inches (515 cm) |
| Wheelbase | 121 inches (307 cm) |
| Height (cab) | 121 inches (307 cm) |
| Shipping weight | 19000 lbs (8618 kg) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging system | alternator |
Hydraulics
| Type | closed center pressure flow compensated (PFC) |
|---|---|
| Valves | 4 |
| Pressure | 2900 psi (200.0 bar) |
| Total flow | 29 gpm (109.8 lpm) |
| Optional flow | 39 gpm (147.6 lpm) |
Mechanical
| Cab | standard with air-conditioning |
|---|---|
| Drive | Four-wheel drive |
| Brakes | Hydraulic wet disc brakes |
| Steering | Power steering |
Production
| Type | Row-Crop tractor |
|---|---|
| Notes | The Challenger MT645 is similar to the Massey Ferguson 8260. |
| Series | MT600 Series |
| Built in | Beauvais, France |
| Years produced | 2002 - 2003 |
Transmission
| Type | power shift |
|---|---|
| Gears | 18 forward and 6 reverse |
| Clutch | electro-hydraulic wet disc |
Tractor hitch
| Rear Type | III |
|---|---|
| Rear lift (at 24"/610mm) | 18400 lbs (8346 kg) |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Engine RPM | 1000@2091 |
| Rear PTO Type | 1000 |