Challenger MT655B
Power
260 hp
Production
2005-2008
Engine
Turbocharged diesel, 6-cylinder 24-valve
Transmission
TechStar
Drive
4WD
From the same series:
Introduction
Challenger MT655B Row-Crop Tractor
The Challenger MT655B is a row-crop tractor manufactured in Beauvais, France, between 2005 and 2008. It belongs to the Challenger MT600 series and is designed for heavy-duty agricultural operations requiring high power and operational versatility.
Engine and Powertrain
The tractor is powered by a Sisu 84ETA 6-cylinder, 24-valve turbocharged diesel engine with a displacement of 8.4 liters. It produces 260 hp at a rated speed of 2200 RPM. The engine features a liquid-cooled vertical inline configuration and is equipped with dual paper air cleaner elements. Power is transmitted through a TechStar continuously variable transmission (CVT), providing infinite forward and reverse speeds across two ranges via an electro-hydraulic wet disc clutch.
Hydraulics and Hitch
The hydraulic system utilizes a pressure flow compensated (PFC) design, delivering a total flow of 39 gpm (147.6 lpm) at a system pressure of 2900 psi (200 bar). The system supports between 4 and 6 valves for implement control. The rear hitch is a Category III type with a lift capacity of 15,600 lbs (7076 kg) measured at 24 inches behind the lift point. An optional front hitch with a capacity of 7,700 lbs (3492 kg) is also available.
Mechanical and Operator Environment
The MT655B features four-wheel drive with electrohydraulic differential locks on both the front and rear axles. Steering is power-assisted, and braking is managed by hydraulic wet disc brakes. The standard cab includes heating and air conditioning, with optional enhancements such as pneumatic cab suspension and automatic climate control to improve operator ergonomics during extended field work.
PTO and Electrical Specifications
The rear PTO is independent and provides multiple speed options, including 540 and 1000 RPM, as well as an economy 540E mode. It is configured with 1.375-inch or 1.75-inch shafts depending on the setup. The electrical system operates on 12 volts, utilizing two batteries with 775 cold cranking amps (CCA) and a 150-amp alternator for battery charging.
Conclusion
The Challenger MT655B is a high-performance row-crop tractor engineered for demanding agricultural tasks. Its combination of a high-capacity hydraulic system, continuously variable transmission, and robust Sisu engine makes it suitable for large-scale farming applications requiring precise speed control and significant lifting power.
Production Information of Challenger, MT655B
- Row-Crop tractor
- Built in Beauvais, France
| Manufacturer | Challenger (a part of AGCO) |
|---|
Dimension and Tires Information of Challenger, MT655B
| Rear tread | 60 to 88 inches [152 to 223 cm] |
|---|---|
| Wheelbase | 121.1 inches [307 cm] |
| Ground clearance | 22.4 inches [56 cm] |
| Height (cab) | 123.6 inches [313 cm] |
| Length | 206 inches [523 cm] |
| Bar rear axle | 4.33 by 118 inches [109 by 2997 mm] |
| Width | 118 inches [299 cm] |
| Ag front | 380/85R34 |
|---|---|
| Ag rear | 480/80R46 |
Engine Specifications of Challenger, MT655B
- Sisu 84ETA
- Liquid-cooled vertical inline
- 6-cylinder 24-valve
- Turbocharged diesel
| Air cleaner | Dual paper elements |
|---|---|
| Rated RPM | 2200 |
| Displacement | 513 ci [8.4 L] |
| Bore/Stroke | 4.370x5.709 inches [111 x 145 mm] |
| Power | 260 hp [193.9 kW] |
| Compression | 17.5:1 |
| Pre-heating(optional) | 1000W coolant heater |
| Coolant capacity | 35.6 qts [33.7 L] |
| Oil capacity | 20 qts [18.9 L] |
| Starter volts | 12 |
Transmission Information of Challenger, MT655B
Transmission variants 1
| Transmission | TechStar |
|---|---|
| Oil capacity | 70.8 qts [67.0 L] |
| Type | Continuously variable transmission (CVT) |
| Gears | Infinite forward and reverse (2-range) |
Mechanical Specs of Challenger, MT655B
- Cab standard with heat and A/C. Optional pneumatic cab suspension and automatic climate control.
- Four-wheel drive
- Hydraulic wet disc brakes
- Power steering
| Final drives | Inboard planetary |
|---|---|
| Trailer brakes(optional) | Hydraulic |
| Differential lock | Electrohydraulic front and rear |
Power Information of Challenger, MT655B
| Engine RPM | 540@2037 |
|---|---|
| Rear PTO | Independent |
| Rear PTO(optional) | 1000 (1.375) |
| Rear PTO(optional) | 540/540E |
| Clutch | Electro-hydraulic wet disc |
| Clutch(optional) | 540E@ 1598 |
| Clutch(optional) | 1000 (1.75) |
| Rear PTO Type | 540 (1.375) |
| Rear PTO Type(optional) | 1000@2031 |
Hydraulics Specifications of Challenger, MT655B
| Type | Pressure flow compensated (PFC) |
|---|---|
| Total flow | 39 gpm [147.6 lpm] |
| Valves | 4 to 6 |
| Capacity | 26.4 gal [99.9 L] |
| Pressure | 2900 psi [200.0 bar] |
Three-Point Hitch of Challenger, MT655B
| Rear Type | III |
|---|---|
| Rear Type(optional) | 12,100 lbs [5488 kg] |
| Front lift | 7,700 lbs [3492 kg] |
| Rear lift (at 24"/610mm) | 15,600 lbs [7076 kg] |
| Front Hitch(optional) | II |
Electrical System of Challenger, MT655B
| Ground | Negative |
|---|---|
| Battery CCA | 775 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 150 |
Where it sits
With 260 HP, the Challenger MT655B sits between MT645B (235 HP) and MT655C (265 HP) in Challenger's range. Its power puts it in the 92th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT655B have?
The Challenger MT655B delivers 260 HP.
What years was the Challenger MT655B produced?
The Challenger MT655B was produced in 2005-2008.
What engine does the Challenger MT655B have?
The Challenger MT655B is powered by a Turbocharged diesel, 6-cylinder 24-valve engine.
What transmission does the Challenger MT655B use?
The Challenger MT655B uses a TechStar transmission.
Is the Challenger MT655B 4WD?
The Challenger MT655B is available in 4WD.