Challenger
Challenger MT285B
The Challenger MT285B is a compact utility tractor built by Iseki and distributed by Challenger (a part of AGCO) from 2005 to 2008. It features a 2.2L 4-cylinder liquid-cooled diesel engine producing 47.5 hp gross and 44.5 hp net. The tractor offers multiple transmission options including hydrostatic, 8-speed SynchroShuttle, and 12-speed partially synchronized PowerShuttle. It has four-wheel drive with mechanical rear differential lock, power steering, and wet disc brakes. The hydraulic system is open center with 10 gal capacity and optional rear and mid valves. The tractor hitch is category I with position and response control and optional top-link draft control. PTO options include independent rear and optional mid PTO. The MT285B has a wheelbase of 76 inches, weighs 3660 lbs, and supports various tire options for agricultural, lawn/turf, and industrial use. Attachments include front-end loaders and backhoes with detailed specifications for the ML40B loader and MH30B backhoe.
Power47 hp
Founded2005 - 2008
ModelMT285B
Technical Specifications
Detailed specifications and technical data for Challenger MT285B
Power
| Engine (net) | 44.5 hp (33.2 kW) |
|---|---|
| Engine (gross) | 47.5 hp (35.4 kW) |
| Gear PTO (claimed) | 38.0 hp (28.3 kW) |
| Hydro PTO (claimed) | 36.5 hp (27.2 kW) |
Tires
| Ag rear | 16.9-24 |
|---|---|
| Ag front | 9.5-16 |
| Lawn/turf rear | 44x18.00-20 |
| Industrial rear | 17.5L-24 |
| Lawn/turf front | 27x10.50-15 |
| Industrial front | 10-16.5 |
Engine
| Type | diesel |
|---|---|
| Model | Iseki E4CG |
| Cooling | liquid-cooled |
| Cylinders | 4-cylinder |
| Rated RPM | 2600 |
| Air cleaner | dry |
| Bore/Stroke | 3.43x3.64 inches (87 x 92 mm) |
| Compression | 21.8:1 |
| Fuel system | indirect injection |
| Power (net) | 44.5 hp (33.2 kW) |
| Pre-heating | glow plugs |
| Displacement | 134.1 ci (2.2 L) |
| Oil capacity | 8.5 qts (8.0 L) |
| Operating RPM | 1010-2860 |
| Power (gross) | 47.5 hp (35.4 kW) |
| Starter volts | 12 |
| Coolant capacity | 8 qts (7.6 L) |
Weight
| Weight | 3660 lbs (1660 kg) |
|---|---|
| Max capacity | 8378 lbs (3800 kg) |
| Max rear axle | 4630 lbs (2100 kg) |
| Max front axle | 4630 lbs (2100 kg) |
Capacity
| Fuel | 13.2 gal (50.0 L) |
|---|---|
| Hydraulic system | 10 gal (37.9 L) |
Variants
| 1547 | similar Massey Ferguson model |
|---|
Dimensions
| Width | 65.4 inches (Minimum width) (166 cm) |
|---|---|
| Length | 132.7 inches (337 cm) |
| Wheelbase | 76 inches (193 cm) |
| Height (ROPS) | 89.1 inches (226 cm) |
| Ground clearance | 14.8 inches (37 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery CCA | 710 |
| Battery volts | 12 |
| Charging amps | 40 |
| Charging system | alternator |
Hydraulics
| Type | open center |
|---|---|
| Capacity | 10 gal (37.9 L) |
| Pressure | 2276 psi (156.9 bar) |
| Pump flow | 10.5 gpm (39.7 lpm) |
| Mid valves | 2 Optional |
| Total flow | 14.9 gpm (sync shuttle) (56.4 lpm), 15.9 gpm (power shuttle/hydro) (60.2 lpm) |
| Rear valves | 2 Optional |
| Steering flow | 4.4 gpm (sync shuttle) (16.7 lpm), 5.4 gpm (power shuttle/hydro) (20.4 lpm) |
| Steering pressure | 2276 psi (156.9 bar) |
Mechanical
| ROPS | Two-post foldable ROPS. Cab optional with air-condtioning. |
|---|---|
| Drive | Four-wheel drive |
| Brakes | Wet disc brakes |
| Final drives | spur gear |
| Power steering | Yes |
| Differential lock | mechanical rear |
Production
| Type | Compact Utility tractor |
|---|---|
| Series | MT200B Series |
| Built in | Matsuyama, Japan |
| Distributor | Challenger (a part of AGCO) |
| Manufacturer | Iseki |
| Production years | 2005 - 2008 |
Attachments
| Overview | Front-end loader, Backhoe |
|---|---|
| ML40B Loader | Dump time1.1s Dump angle47° Lower time2.9s Raise time4.5s Bucket width72 inches (182 cm) Rollback time3.3s Reach (dumped)22 inches (55 cm) Reach (ground)75 inches (190 cm) Rollback angle30° Height (at pin)114.5 inches (290 cm) Clearance (dumped)84 inches (213 cm) Breakout force (at pin)3252 lbs (1475 kg) Lift capacity (full at pin)2500 lbs (1134 kg) Lift capacity (1.5m at 500mm)2249 lbs (1020 kg) Lift capacity (full at 500mm)1921 lbs (871 kg) |
| Challenger MH30B Backhoe | Backhoe typeChallenger MH30B Backhoe Bucket widths10 inches (25 cm), 12 inches (30 cm), 16 inches (40 cm), 24 inches (60 cm) Transport height81.5 inches (207 cm) |
Transmission
| Options | hydrostatic, 8-speed, 12-speed partially synchronized with power shuttle |
|---|---|
| Hydrostatic | Typehydrostatic Gearsinfinite forward and reverse (3-range) Oil capacity40.2 qts (38.0 L) |
| PowerShuttle | Typepartially synchronized with power shuttle Gears12 forward and reverse Clutchdry main, wet shuttle DescriptionThree ranges with four gears each. Transmission can be shifted from forward to reverse on the go, without the clutch. In-range gear changes can be made on the go with the clutch. Oil capacity40.2 qts (38.0 L) TransmissionPowerShuttle |
| SynchroShuttle | Gears8 forward and reverse Clutchmechanical dry disc DescriptionFour non-synchronized gears in two non-synchronized ranges, with synchronized shuttle shift. Oil capacity40.2 qts (38.0 L) TransmissionSynchroShuttle |
Tractor hitch
| Control | position and response control, optional top-link draft control |
|---|---|
| Rear Arms | telescopic link ends |
| Rear Type | I |
| Rear lift (at ends) | 3483 lbs (1579 kg) |
| Rear lift (at 24"/610mm) | 3086 lbs (1399 kg) |
Power Take-off (PTO)
| Clutch | electro-hydraulic wet disc |
|---|---|
| Mid PTO | independent Optional |
| Rear PTO | independent |
| Mid PTO Type | 2000 (1.00) |
| Rear PTO Type | 540 (1.375) |