Challenger MT445

The Challenger MT445 is a tractor produced by Challenger. It is equipped with a 258 ci 4.2 L engine. The listed engine power is 69.7 hp 52.0 kW. Transmission: 12 forward and reverse. Operating weight: 6211 to 8170 pounds.

Engine Power

69.7 hp 52.0 kW

Fuel & Capacities

29.1 gal 110.1 L

Transmission

12 forward and reverse

Operating Weight

6211 to 8170 pounds

Overview

	2002 - 2004 MT400 SeriesUtility tractor MT400 Series Utility tractor

Production
Manufacturer	Challenger (a part of AGCO)
Utility tractor
Built in England
The Challenger MT445 is similar to the Massey Ferguson 4233 and 4335.

Challenger MT445 Engine
Perkins 4.2L 4-cyl diesel
ROPS Fuel tank	29.1 gal 110.1 L
Cab Fuel tank	34 gal 128.7 L
	50 gal*Optional with cab. 189.2 L
Engine details ...

Challenger MT445 Power
PTO (claimed)	65 hp 48.5 kW
Drawbar (tested)	60.2 hp 44.9 kW
PTO (tested)	69.7 hp 52.0 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	6211 to 8170 pounds
Front tire	12.4R24
Rear tire	13.6R38
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 — 258 ci / 4.2 L Diesel

Manufacturer	Perkins 3054B
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	258 ci 4.2 L
Bore/Stroke	4.055x5.00 inches 103 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 MT445 Tires
Ag front	12.4R24
Ag rear	13.6R38

Dimensions
Wheelbase	93 inches 236 cm
Length	163 inches 414 cm
Width	77 inches 195 cm
Height (ROPS)	103 inches 261 cm
Height (Folded ROPS)	78 inches 198 cm
Height (cab)	100 inches 254 cm

Challenger MT445 Weight
2WD ROPS	6211 lbs 2817 kg
4WD ROPS	6546 lbs 2969 kg
2WD Cab	7619 lbs 3455 kg
4WD Cab	8170 lbs 3705 kg

Tests

OCED Tractor Test 1950
Diesel 12-speed 4WD October 2000 - December 2000, Link: OCED Tractor Test 1950 file
PTO performance
Power at rated engine speed	69.7 hp 52.0 kW
Fuel use	4.3 gal/hour 16.3 l/hour
Power at rated PTO speed	68 hp 50.7 kW
Fuel use	4.0 gal/hour 15.1 l/hour
Drawbar performance
Max power	60.2 hp 44.9 kW
Fuel use	4.3 gal/hour 16.3 l/hour
Gear 3M used for power test.
Max pull	6970 lbs 3161 kg
Gear 2L used for pull test.

Photos

Challenger MT445 with ML94 front-end loader.

Challenger MT445 console.

Recommended Implements & Sizing Guide

Engineering recommendations for Challenger MT445 based on its 69.7 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	3 to 4 Bottom (16")3 - 4 铧 (40 cm)	Heavy Duty	Suitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing	7 to 8 ft (84-96 in)2.1 - 2.4 m	Heavy Duty	Heavy-duty twin spindle cutter for overgrown acreage.
Rotary TillerSeedbed Prep	78 to 84 in200 - 215 cm	Heavy Duty	Heavy commercial tiller with multi-speed gearbox.
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	4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机	Heavy Duty	Silage and dry hay; 540 RPM PTO with slip-clutch.

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 MT445.

Estimated Continuous Field Runtime: 8 hrs

Approximately 8 hours of continuous field operation at ~75% rated power on a full tank (29.1 gal / 110.2 L).

Estimated 75% Load Fuel Burn~3.6 gal/hr (13.7 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