Challenger MT845B
Power
400 hp
Production
2005-2008
Engine
Turbocharged diesel, 6-cylinder 24-valve
Transmission
Cat Powershift
From the same series:
Introduction
Challenger MT845B Agricultural Crawler Tractor
The Challenger MT845B is a high-horsepower agricultural crawler tractor manufactured by AGCO in Jackson, Minnesota, between 2005 and 2008. Designed for heavy-duty field operations, this tracked machine belongs to the MT800B series and provides significant traction and soil compaction mitigation.
Engine and Performance
The tractor is powered by a Caterpillar C15 turbocharged diesel engine. This 15.2-liter, 6-cylinder unit features a 24-valve design and liquid cooling, delivering a gross power output of 400 hp (298.3 kW) at a rated speed of 2100 RPM. It produces a peak torque of 1423 lb-ft (1929.6 Nm) at 1300 RPM, providing the necessary pulling force for large-scale implements.
Transmission and Drive
Equipped with a Cat Powershift transmission, the MT845B offers 16 forward and 4 reverse gears, allowing for full power shifting without manual clutching. The system utilizes a hydraulic wet disc clutch to manage power delivery to the 27.5-inch tracks, ensuring smooth operation under load.
Hydraulics and Hitch
The tractor employs a closed-center PFC (Pressure Flow Compensated) hydraulic system. It provides a standard total flow of 43.5 gpm (164.6 lpm), with an optional capacity of up to 59 gpm (223.3 lpm), operating at a pressure of 2900 psi (200.0 bar). The rear hitch is a Category III/IVN type with a lift capacity of 19,500 lbs (8845 kg), supported by 4 to 6 remote valves.
Dimensions and Operator Environment
With a wheelbase of 118 inches and an operating weight ranging from 41,000 to 43,075 lbs, the machine is balanced for stability. The operator station features a standard cab equipped with air conditioning to maintain comfort during extended field operations.
Conclusion
The Challenger MT845B is engineered for large-scale agricultural tasks requiring high tractive effort. Its combination of a high-torque Caterpillar engine, full powershift transmission, and robust hydraulic capacity makes it suitable for heavy tillage and large-implement pulling operations.
Production Information of Challenger, MT845B
- Agricultural Crawler tractor
- Built in Jackson, Minnesota, USA
| Manufacturer | Challenger (a part of AGCO) |
|---|
Engine Specifications of Challenger, MT845B
- Caterpillar C15
- Liquid-cooled inline
- 6-cylinder 24-valve
- Turbocharged diesel
| Power (gross) | 400 hp [298.3 kW] |
|---|---|
| Rated RPM | 2100 |
| Displacement | 928 ci [15.2 L] |
| Bore/Stroke | 5.402x6.752 inches [137 x 172 mm] |
| Emissions | Tier III |
| Compression | 16.5:1 |
| Air cleaner | Dual paper elements |
| Starter volts | 12 |
| Torque RPM | 1300 |
| Torque | 1423 lb-ft [1929.6 Nm] |
Transmission Information of Challenger, MT845B
Transmission variants 1
| Transmission | Cat Powershift |
|---|---|
| Clutch | Hydraulic wet disc |
| Type | Full power shift |
| Gears | 16 forward and 4 reverse |
Mechanical Specs of Challenger, MT845B
- Hydraulic wet disc brakes
- Cab standard with air-conditioning.
| Drive | Crawler |
|---|
Power Information of Challenger, MT845B
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 (1.75) |
Hydraulics Specifications of Challenger, MT845B
| Type | Closed center PFC |
|---|---|
| Type(optional) | 59 gpm [223.3 lpm] |
| Total flow | 43.5 gpm [164.6 lpm] |
| Pressure | 2900 psi [200.0 bar] |
| Rear valves | 4 to 6 |
Three-Point Hitch of Challenger, MT845B
| Rear Type | III/IVN |
|---|---|
| Rear lift | 19500 lbs [8845 kg] |
Electrical System of Challenger, MT845B
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 1000 |
| Charging amps | 185 |
| Batteries | 4 |
Where it sits
With 400 HP, the Challenger MT845B sits between MT835B (350 HP) and MT845C (440 HP) in Challenger's range. Its power puts it in the 97th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT845B have?
The Challenger MT845B delivers 400 HP.
What years was the Challenger MT845B produced?
The Challenger MT845B was produced in 2005-2008.
What engine does the Challenger MT845B have?
The Challenger MT845B is powered by a Turbocharged diesel, 6-cylinder 24-valve engine.
What transmission does the Challenger MT845B use?
The Challenger MT845B uses a Cat Powershift transmission.