Challenger MT425

The Challenger MT425 is a tractor produced by Challenger. It is equipped with a 243 ci 4.0 L engine. The listed engine power is 54.8 hp 40.9 kW. Transmission: 12 forward and reverse. Operating weight: 6182 to 7487 pounds.

Engine Power

54.8 hp 40.9 kW

Fuel & Capacities

29.1 gal 110.1 L

Transmission

12 forward and reverse

Operating Weight

6182 to 7487 pounds

Overview

	2002 - 2004 MT400 SeriesUtility tractor MT400 Series Utility tractor

Production
Manufacturer	Challenger (a part of AGCO)
Utility tractor
Built in England

Variants
4225	similar Massey Ferguson model
4325	similar Massey Ferguson model

Challenger MT425 Engine
Perkins 4.0L 4-cyl diesel
ROPS Fuel tank	29.1 gal 110.1 L
Cab Fuel tank	34 gal 128.7 L
Engine details ...

Challenger MT425 Power
PTO (claimed)	55 hp 41.0 kW
Drawbar (tested)	42.5 hp 31.7 kW
PTO (tested)	55.4 hp 41.3 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Power steering
Hydraulic wet disc brakes
Two-post folding ROPS. Cab available with air-conditioning.

Hydraulics
Type	open center
Pressure	3046 psi 210.0 bar
Valves	2 to 4
SCV flow	10 gpm 37.9 lpm
Total flow	25 gpm 94.6 lpm

Tractor hitch
Rear Type	II
Control	electronic draft control
Rear lift (at 24"/610mm)	4100 lbs 1859 kg
	6200 lbsOptOptional 2812 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000

Dimensions & Tires
Wheelbase	93 inches 236 cm
Weight	6182 to 7487 pounds
Front tire	360/70R24
Rear tire	18.4R30
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Battery volts	12

References

MT400 - Serious Machinery to take on any challenge published in 2002, by AGCO

Engine

Engine Detail — 243 ci / 4.0 L Diesel

Manufacturer	Perkins 3054
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	243 ci 4.0 L
Bore/Stroke	3.937x5.00 inches 100 x 127 mm
Air cleaner	dual paper elements
Pre-heating	thermostart
Compression	17.3:1
Rated RPM	2200
Starter volts	12

Transmission

Transmission options
24-speed power shuttle
12-speed syncromesh
12-speed mechanical shuttle

Transmission — 24 forward and reverse power shuttle

Type	power shuttle
Gears	24 forward and reverse
Clutch	wet disc

Transmission — 12 forward and 4 reverse syncromesh

Type	syncromesh
Gears	12 forward and 4 reverse

Transmission — 12 forward and reverse mechanical shuttle

Type	mechanical shuttle
Gears	12 forward and reverse

Dimensions

Challenger MT425 Tires
Ag front	360/70R24
Ag rear	18.4R30

Dimensions
Wheelbase	93 inches 236 cm
2WD Length	158 inches 401 cm
4WD Length	161 inches 408 cm
Width	77 inches 195 cm
Height (ROPS)	103 inches 261 cm
Height (Folded ROPS)	78 inches 198 cm
Height (cab)	96 inches 243 cm

Challenger MT425 Weight
2WD ROPS	6182 lbs 2804 kg
4WD ROPS	6520 lbs 2957 kg
2WD Cab	6935 lbs 3145 kg
4WD Cab	7487 lbs 3396 kg

Tests

OCED Tractor Test 1779
Diesel 12-speed shuttle 4WD March 1 - May 1, 1998 Link: OCED Tractor Test 1779 file
PTO performance
Max power	55.4 hp 41.3 kW
Fuel use	3.7 gal/hour 14.0 l/hour
Power at rated engine speed	54.8 hp 40.9 kW
Fuel use	3.8 gal/hour 14.4 l/hour
Power at rated PTO speed	53.4 hp 39.8 kW
Fuel use	3.4 gal/hour 12.9 l/hour
Drawbar performance
Max power	42.5 hp 31.7 kW
Fuel use	3.6 gal/hour 13.6 l/hour
Gear 1M used for power test.
Max pull	7,680 lbs 3483 kg
Gear 1L used for pull test.

Photos

Challenger MT425

Recommended Implements & Sizing Guide

Engineering recommendations for Challenger MT425 based on its 54.8 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	6 ft (72 in)1.8 m	Medium Duty	Medium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep	66 to 72 in165 - 180 cm	Medium Duty	Standard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	Small Square Baler (14x18")小方捆打捆机 (36x46 cm)	Medium Duty	Classic 2-string baler for horse and small livestock hay.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Challenger MT425.

Estimated Continuous Field Runtime: 10.2 hrs

Approximately 10.2 hours of continuous field operation at ~75% rated power on a full tank (29.1 gal / 110.2 L).

Estimated 75% Load Fuel Burn~2.8 gal/hr (10.8 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours