Challenger
Challenger MT845B
The Challenger MT845B is an agricultural crawler tractor produced from 2005 to 2008 as part of the MT800B Series. Manufactured by Challenger, a part of AGCO, it was built in Jackson, Minnesota, USA. It features a Caterpillar C15 turbocharged 6-cylinder diesel engine with 400 hp gross power, a 16-speed full power shift Cat Powershift transmission, and crawler drive. The tractor includes hydraulic wet disc brakes, a cab with air-conditioning, and a closed center PFC hydraulic system with up to 59 gpm optional flow. It has a rear hitch type III/IVN with 19500 lbs lift capacity and an independent 1000 rpm rear PTO. Dimensions include a 118-inch wheelbase, 265.9-inch length, and weights ranging from 41000 to 43075 lbs operating weight. Track widths are available in 27.5, 30, and 36 inches. Electrical system features 4 batteries with 185 amp charging and 12 volts.
Power400 hp
Founded2005 - 2008
ModelMT845B
Technical Specifications
Detailed specifications and technical data for Challenger MT845B
Power
| PTO (tested) | 402.32 hp (300.0 kW) |
|---|---|
| PTO (claimed) | 335 hp (249.8 kW) |
| Engine (gross) | 400 hp (298.3 kW) |
| Drawbar (tested) | 313.27 hp (233.6 kW) |
Engine
| Type | turbocharged diesel |
|---|---|
| Model | Caterpillar C15 |
| Torque | 1423 lb-ft (1929.6 Nm) |
| Cooling | liquid-cooled inline |
| Cylinders | 6-cylinder 24-valve |
| Emissions | Tier III |
| Fuel tank | 305 gal (1154.4 L), Optional 330 gal (1249.0 L) |
| Rated RPM | 2100 |
| Torque RPM | 1300 |
| Air cleaner | dual paper elements |
| Bore/Stroke | 5.402x6.752 inches (137 x 172 mm) |
| Compression | 16.5:1 |
| Displacement | 928 ci (15.2 L) |
| Power (gross) | 400 hp (298.3 kW) |
| Starter volts | 12 |
Tracks
| Width options | 27.5 inches (69 cm), 30 inches (76 cm), 36 inches (91 cm) |
|---|
Weight
| Shipping | 41000 lbs (18597 kg) |
|---|---|
| Operating | 43075 lbs (19538 kg) |
| Max capacity | 50000 lbs (22680 kg) |
Dimensions
| Width | 140.9 inches (357 cm) |
|---|---|
| Height | 138.1 inches (350 cm) |
| Length | 265.9 inches (675 cm) |
| Wheelbase | 118 inches (299 cm) |
| Ground clearance | 14.4 inches (36 cm) |
Electrical
| Ground | negative |
|---|---|
| Batteries | 4 |
| Battery CCA | 1000 |
| Battery volts | 12 |
| Charging amps | 185 |
Hydraulics
| Type | closed center PFC |
|---|---|
| Pressure | 2900 psi (200.0 bar) |
| Total flow | 43.5 gpm (164.6 lpm), Optional 59 gpm (223.3 lpm) |
| Rear valves | 4 to 6 |
Mechanical
| Cab | standard with air-conditioning |
|---|---|
| Drive | crawler |
| Brakes | Hydraulic wet disc brakes |
Production
| Type | Agricultural Crawler tractor |
|---|---|
| Series | MT800B Series |
| Built in | Jackson, Minnesota, USA |
| Years produced | 2005 - 2008 |
Transmission
| Type | full power shift |
|---|---|
| Gears | 16 forward and 4 reverse |
| Model | Cat Powershift |
| Clutch | hydraulic wet disc |
Tractor hitch
| Rear Type | III/IVN |
|---|---|
| Rear lift | 19500 lbs (8845 kg) |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 1000 (1.75) |