Challenger MT285B: all source data

All 100 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.

Overview

Production
DistributorChallenger (a part of AGCO)
ManufacturerIseki
(no label)Compact Utility tractor
(no label)Built in Matsuyama, Japan
Engine
(no label)Iseki 2.2L 4-cyl diesel
Transmission
(no label)hydrostatic
(no label)8-speed
(no label)12-speed partially synchronized with power shuttle
Power
Engine (gross)47.5 hp | 35.4 kW
Engine (net)44.5 hp | 33.2 kW
Gear PTO (claimed)38.0 hp | 28.3 kW
Hydro PTO (claimed)36.5 hp | 27.2 kW
Mechanical
(no label)Four-wheel drive
Final drivesspur gear
Differential lockmechanical rear
(no label)Power steering
(no label)Wet disc brakes
(no label)Two-post foldable ROPS. Cab optional with air-condtioning.
Capacity
Fuel13.2 gal | 50.0 L
Hydraulic system10 gal | 37.9 L
Hydraulics
Typeopen center
Capacity10 gal | 37.9 L
Pressure2276 psi | 156.9 bar
Rear valves2
Mid valves2
Pump flow10.5 gpm | 39.7 lpm
Total flow14.9 gpm (sync shuttle) | 56.4 lpm
Total flow15.9 gpm (power shuttle/hydro) | 60.2 lpm
Steering flow4.4 gpm (sync shuttle) | 16.7 lpm
Steering flow5.4 gpm (power shuttle/hydro) | 20.4 lpm
Steering press.2276 psi | 156.9 bar
Hitch
Rear TypeI
Controlposition and response control
Controloptional top-link draft control
Rear lift (at ends)3483 lbs | 1579 kg
Rear lift (at 24"/610mm)3086 lbs | 1399 kg
Rear Armstelescopic link ends
Pto
Rear PTOindependent
Clutchelectro-hydraulic wet disc
Rear PTO Type540 (1.375)
Mid PTOindependent
Mid PTO Type2000 (1.00)
Dimensions
Wheelbase76 inches | 193 cm
Weight3660 lbs | 1660 kg
Front tire9.5-16
Rear tire16.9-24
Electrical
Groundnegative
Charging systemalternator
Charging amps40
Battery CCA710
Battery volts12

Engine

Engine detail
(no label)Iseki E4CG
(no label)diesel
(no label)4-cylinder
(no label)liquid-cooled
Displacement134.1 ci | 2.2 L
Bore/Stroke3.43x3.64 inches | 87 x 92 mm
Power (net)44.5 hp | 33.2 kW
Power (gross)47.5 hp | 35.4 kW
Fuel systemindirect injection
Air cleanerdry
Pre-heatingglow plugs
Compression21.8:1
Rated RPM2600
Operating RPM1010-2860
Starter volts12
Oil capacity8.5 qts | 8.0 L
Coolant capacity (Coolant)8 qts | 7.6 L

Transmission

Transmission options
(no label)hydrostatic
(no label)8-speed
(no label)12-speed partially synchronized with power shuttle
Transmission
Typehydrostatic
Gearsinfinite forward and reverse (3-range)
Oil capacity40.2 qts | 38.0 L
TransmissionSynchroShuttle
Gears8 forward and reverse
Clutchmechanical dry disc
Oil capacity40.2 qts | 38.0 L
(no label)Four non-synchronized gears in two non-synchronized ranges, with synchronized shuttle shift.
TransmissionPowerShuttle
Typepartially synchronized with power shuttle
Gears12 forward and reverse
Clutchdry main, wet shuttle
Oil capacity40.2 qts | 38.0 L
(no label)Three 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.

Dimensions

Tires
Ag front9.5-16
Ag rear16.9-24
Lawn/turf front27x10.50-15
Lawn/turf rear44x18.00-20
Industrial front10-16.5
Industrial rear17.5L-24
Dimensions
Wheelbase76 inches | 193 cm
Length132.7 inches | 337 cm
Width65.4 inches | 166 cm
Height (ROPS)89.1 inches | 226 cm
Ground clearance14.8 inches | 37 cm
Weight
(no label)3660 lbs | 1660 kg
Max capacity (Max)8378 lbs | 3800 kg
Max front axle4630 lbs | 2100 kg
Max rear axle (Max)4630 lbs | 2100 kg