Introduction
Challenger MT255B Compact Utility Tractor
The Challenger MT255B is a compact utility tractor produced between 2005 and 2008. Manufactured by Iseki in Matsuyama, Japan, this machine was designed for versatile use in agricultural, landscaping, and maintenance applications.
Engine Specifications
The tractor is powered by an Iseki E3CF 1.5-liter, 3-cylinder diesel engine. This liquid-cooled unit produces a gross power output of 28.4 hp (21.2 kW) and a net power of 28 hp (20.9 kW). It utilizes indirect injection and features glow plug pre-heating to facilitate reliable starting. The engine operates at a rated speed of 2500 RPM and is protected by a dual-stage dry air cleaner.
Transmission and Drivetrain
Operators can choose between two transmission configurations: a hydrostatic transmission providing infinite forward and reverse speeds across three ranges, or a 9-speed gear transmission with three non-synchronized gears across three ranges. Both configurations include four-wheel drive and a mechanical rear differential lock to enhance traction. The drivetrain is supported by power steering and wet disc brakes for controlled operation.
Hydraulics and Power Take-Off
The hydraulic system is an open-center type with a total flow capacity of 10.0 gpm (37.9 lpm), of which 7.4 gpm (28.0 lpm) is dedicated to implements. It operates at a pressure of 2134 psi. The tractor is equipped with a Category I three-point hitch, offering a rear lift capacity of 1610 lbs (730 kg) at 24 inches behind the lift points. Power take-off options include a live rear PTO (540 RPM) and an independent mid-mount PTO (2000 RPM).
Dimensions and Operator Station
Built on a 65.5-inch wheelbase, the MT255B features a compact design with a minimum width of 50.6 inches and a ground clearance of 10 inches. The operator station is equipped with a two-post foldable Roll-Over Protective Structure (ROPS) to enhance safety while allowing for easier storage in low-clearance areas. The tractor is compatible with agricultural, industrial, or lawn/turf tire configurations depending on the intended use.
Conclusion
The Challenger MT255B is a robust, Japanese-engineered utility tractor suitable for small-to-medium scale farming, property management, and professional landscaping. Its combination of multiple transmission choices and diverse PTO configurations makes it a flexible solution for operators requiring a compact machine with significant lifting and hydraulic capacity.
Production Information of Challenger, MT255B
- Built in Matsuyama, Japan
- Compact Utility tractor
| Distributor | Challenger (a part of AGCO) |
|---|---|
| Manufacturer | Iseki |
Dimension and Tires Information of Challenger, MT255B
| Flange rear axle | 37.4 inch length [949 mm] |
|---|---|
| Wheelbase | 65.5 inches [166 cm] |
| Ground clearance | 10 inches [25 cm] |
| Height (ROPS) | 80.7 inches [204 cm] |
| Length | 112.4 inches [285 cm] |
| Front tread | 39.6 inches [100 cm] |
| Front axle | Flange: 39.34 inch length [999 mm] |
| Width | 50.6 inches [128 cm] |
| Rear tread | 37.6 inches [95 cm] |
Minimum width.
| Ag front | 7-14 |
|---|---|
| Industrial front | 25x8.50-14 |
| Lawn/turf rear | 36x13.50-15 |
| Ag rear | 9.5-24 |
| Industrial rear | 12.50/80-18 |
| Lawn/turf front | 24x8.50-14 |
Engine Specifications of Challenger, MT255B
- Iseki E3CF
- Liquid-cooled
- 3-cylinder
- Diesel
| Coolant capacity | 5.8 qts [5.5 L] |
|---|---|
| Oil capacity | 3.8 qts [3.6 L] |
| Power (gross) | 28.4 hp [21.2 kW] |
| Pre-heating | Glow plugs |
| Air cleaner | Dual-stage dry |
| Displacement | 89.3 ci [1.5 L] |
| Power (net) | 28 hp [20.9 kW] |
| Fuel system | Indirect injection |
| Bore/Stroke | 3.39x3.30 inches [86 x 84 mm] |
| Starter volts | 12 |
| Idle RPM | 930-2750 |
| Rated RPM | 2500 |
Transmission Information of Challenger, MT255B
Transmission variants 1
| Type | Hydrostatic |
|---|---|
| Gears | Infinite forward and reverse (3-range) |
| Oil capacity | 30.6 qts [29.0 L] |
Transmission variants 2
- Three non-synchronized gears (1-3), plus reverse (R) in three non-synchronized ranges.
| Type | Gear |
|---|---|
| Oil capacity | 19 qts [18.0 L] |
| Gears | 9 forward and 3 reverse |
| Clutch | Dry dual stage |
- Hydrostatic
- 9-speed gear
Mechanical Specs of Challenger, MT255B
- Four-wheel drive
- Wet disc brakes
- Power steering
- Two-post foldable ROPS
| Final drives | Spur gear |
|---|---|
| Differential lock | Mechanical rear |
Power Information of Challenger, MT255B
| Hydro Mid PTO | Independent |
|---|---|
| Gear Rear PTO | Live |
| Rear PTO Type | 540 (1.375) |
| Hydro Clutch | Electro-hydraulic wet disc |
| Hydro Rear PTO | Independent |
| Gear Clutch | Dry disc |
| Gear Mid PTO | Live |
| Gear Clutch | Dry disc |
| Mid PTO Type | 2000 (1.00) |
| Hydro Clutch | Electro-hydraulic wet disc |
Hydraulics Specifications of Challenger, MT255B
| Pump flow | 7.4 gpm [28.0 lpm] |
|---|---|
| Type | Open center |
| Rear valves(optional) | 2 |
| Pressure | 2134 psi [147.1 bar] |
| Gear Capacity | 4.8 gal [18.2 L] |
| Total flow | 10.0 gpm [37.9 lpm] |
| Mid valves(optional) | 2 |
| Hydro Capacity | 7.7 gal [29.1 L] |
| Steering press. | 1711 psi [118.0 bar] |
| Steering flow | 2.6 gpm [9.8 lpm] |
Three-Point Hitch of Challenger, MT255B
| Rear Type | I |
|---|---|
| Rear lift (at 24"/610mm) | 1610 lbs [730 kg] |
| Rear lift (at ends) | 2425 lbs [1099 kg] |
| Control | Position and response control |
| Rear Arms | Fixed link ends |
| Rear Arms(optional) | Top-link draft control |
Optional, with hydrostatic transmission.
Electrical System of Challenger, MT255B
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 582 |
| Charging system | Alternator |
| Charging amps | 40 |
Where it sits
With 28 HP, the Challenger MT255B sits between MT225B (22 HP) and MT265B (33 HP) in Challenger's range. Its power puts it in the 14th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT255B have?
The Challenger MT255B delivers 28 HP.
What years was the Challenger MT255B produced?
The Challenger MT255B was produced in 2005-2008.
What engine does the Challenger MT255B have?
The Challenger MT255B is powered by a Diesel, 3-cylinder engine.
What transmission does the Challenger MT255B use?
The Challenger MT255B uses a Hydrostatic transmission.
Is the Challenger MT255B 4WD?
The Challenger MT255B is available in 4WD.