Challenger MT445B

The Challenger MT445B is a tractor produced by Challenger. It is equipped with a 268 ci 4.4 L engine. The rated power output is 85 hp 63.4 kW. Transmission: Autopower IV. Operating weight: 8,840 lbs (2WD) 4009 kg.

Overview

	2004 - 2013 Model year 2004-20072008-2013 MT400B SeriesUtility tractor
2004 - 2013
Model year 2004-20072008-2013
MT400B Series
Utility tractor

Production
Manufacturer	Challenger (a part of AGCO)
Utility tractor
Built in Beauvais, France
The Challenger MT445B is similar to the Massey Ferguson 5445.

Challenger MT445B Engine
Caterpillar 4.4L 4-cyl diesel
Fuel tank	40 gal 151.4 L
Engine details ...

Challenger MT445B Transmission
16-speed four speed power shift
Transmission details ...

Challenger MT445B Power
Engine	85 hp 63.4 kW
PTO (claimed)	70 hp 52.2 kW
Drawbar (tested)	60.5 hp 45.1 kW
PTO (tested)	75.9 hp 56.6 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Final drives	inboard planetary
Differential lock	electro-hydraulic
Steering	hydrostatic power
Hydraulic wet disc brakes
ROPS. Cab optional with air-conditioning.

Hydraulics
ROPS Type	open center
Cab Type	closed center load sensing
Pressure	2900 psi 200.0 bar
Valves	2 to 4
Pump flow	26.4 gpm (open center) 99.9 lpm
	29 gpm (CCLS) 109.8 lpm

Tractor hitch
Rear Type	II
Control	electronic top-link draft control
Rear lift (at 24"/610mm)	7285 lbs 3304 kg
Rear Arms	telescopic stabilizers and link ends

Power Take-off (PTO)
Rear PTO	independent
Clutch	electro-hydraulic wet disc
Rear PTO Type	540/1000
	540/540E/1000/1000E

Dimensions & Tires
Wheelbase	97 inches 246 cm
Weight	8840 to 9445 pounds
Front tire	10.00-16
Rear tire	480/70R38
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References
Challenger MT400B Product Information Guide published in 2003, by AGCO
Challenger MT400B Series published in 2004, by AGCO
Challenger Specialty Wheel Tractors published in 2007

Engine

Engine Detail — 268 ci / 4.4 L Diesel

Manufacturer	Caterpillar 3054T
Configuration	turbocharged diesel, 4-cylinder, liquid-cooled vertical
This engine was alternative branded as a Perkins 1104C depending on market.
Displacement	268 ci 4.4 L
Bore/Stroke	4.134x5.00 inches 105 x 127 mm
Emissions	Tier 2
Power	85 hp 63.4 kW
Air cleaner	dual paper elements
Compression	17.5:1
Rated RPM	2200
Starter volts	12

Transmission

Transmission — Autopower IV

Transmission	Autopower IV
Type	four speed power shift
Gears	16 forward and reverse
Clutch	wet disc
Four power shift gears in four ranges.

Dimensions

Challenger MT445B Tires
Ag front	10.00-16 (2WD)
	13.6R28 (4WD)
Ag rear	480/70R38

Dimensions
Wheelbase	97 inches 246 cm
Weight	8,840 lbs (2WD) 4009 kg
	9,445 lbs (4WD) 4284 kg
Flange rear axle

Tests

OCED Tractor Test 2291
Diesel 16-speed 4WD September 2004 - 2004, Link: OCED Tractor Test 2291 file
PTO performance
Max power	75.9 hp 56.6 kW
Fuel use	4.7 gal/hour 17.8 l/hour
Power at rated engine speed	70.7 hp 52.7 kW
Fuel use	5.0 gal/hour 18.9 l/hour
Power at rated PTO speed	73.4 hp 54.7 kW
Fuel use	4.8 gal/hour 18.2 l/hour
Drawbar performance
Max power	60.5 hp 45.1 kW
Fuel use	4.9 gal/hour 18.5 l/hour
Gear 1LC used for power test.
Max pull	8680 lbs 3937 kg
Gear 2TC used for pull test.

Photos

Challenger MT445B tractor photo