Production
Model Year		2009	vs	2011
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Production Manufacturer		Agco	vs	New Holland
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Factory		Beauvais, France	vs	Racine, Wisconsin, Usa
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Capacity
Capacity Fuel		155.9 Gal [590.1 L] 182.3 Gal [690.0 L] (without E3)	vs	168 gal
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Exhaust fluid (DEF)		7.9 gal	vs	24 gal
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Power Take-off (PTO)
Rear RPMs		540	vs	1000
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Rear PTO		Independent Electro-hydaulic	vs
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Front PTO		Optional	vs	Optional
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Front RPMs		1000	vs	1000 (1-3/4)
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Mechanical
Mechanical Steering		Hydrostatic Power	vs	Hydrostatic Power
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Chassis		4x4 Mfwd 4wd	vs	4x4 Mfwd 4wd
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Brakes		Hydraulic Wet Disc	vs	Hydraulic Wet Disc
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Cab		Cab Standard With Heat And Air-conditioning. Optional Heated Seat, Power Adjustable Mirrors, And Automatic Temperature Control.	vs	Cab Standard.
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Engine
Engine Fuel		Diesel	vs	Diesel
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Engine Type		Agco Sisu Power 84cta	vs	Fpt
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Engine Aspiration		Turbocharged Intercooled	vs	Turbocharged Aftercooled
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Engine Cylinders		6	vs	6
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Engine Bore/Stroke		4.37x5.71 Inches [111 X 145 Mm]	vs
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Engine Displacement		512.6 ci	vs	531 ci
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Engine Cooling		Liquid	vs	Liquid
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Engine Compression		16.7:1	vs
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Engine Rated RPMs		2,200	vs	2000
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Engine Torque		874 lb	vs
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Engine Torque RPMs		1500	vs
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Engine Starter volts		12	vs
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Engine Comments		The Engine Uses Agco's E3 Selective Catalytic Reduction (scr) System To Reduce Nitrogen Oxides (nox).	vs
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Engine Valves			vs	24
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Engine Power		240 hp	vs	307 hp
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Engine Starter type			vs	Electric
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Engine Emissions		Interim Tier 4	vs	Interim Tier 4
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Engine Starter		Electric	vs
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Maximum Power		270 hp	vs	358 hp
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Transmission
Transmission Type		Continuously Variable Transmission	vs	Full Power Shift
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Transmission Transmission		Techstar Cvt	vs
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Transmission Gears		Infinite Forward And Reverse	vs	19 forward
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Transmission Speeds			vs
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Dimensions
Wheelbase		122.2 inches	vs	135.8 inches
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Weight (operating)		25,795 lbs	vs
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Length		223.2 inches	vs
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Height (cab)		133.1 inches	vs
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Rear tread			vs	60 To 88 Inches [152 To 223 Cm]
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Weight (Shipping)		24,250 lbs	vs	24,480 lbs
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Rear Axle			vs	4.5 By 120 Inches [114x3048 Mm]
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Weight (max capacity)		38,890 lbs	vs	34,425 lbs
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Hydraulics
Hydraulics Type		Closed Center Load Sensing	vs	Closed Center Load Sensing
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Hydraulics Valves		4 to	vs
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Pressure		2,901 psi	vs
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Pump flow			vs	35 gpm
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Valve flow		26.4 gpm	vs
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Total flow		46.2 gpm	vs	42.5 gpm
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Rear valves			vs	4 to
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Transmission-2
Transmission-2 Type			vs	Full Power Shift
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Transmission-2 Gears			vs	18 forward
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Loader
Loader Loader type		Challenger Ml99b	vs
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Loader Height (to pin)		187 inches	vs
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Loader Dump angle		55	vs
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Loader Rollback angle		41	vs
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Loader Breakout force (bucket)		10,560 lbs	vs
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Loader Lift to full height (at pin)		5,610 lbs	vs
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Loader Lift to full height (at 800mm)		4,950 lbs	vs
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Loader Breakout force (lift)		7,700 lbs	vs
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3-Point Hitch
Rear Type		Iii, Iv	vs	3/3n
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Rear lift (at 24"/610mm)		21,336 lbs	vs
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Rear lift			vs	16,375 lbs
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Front Hitch		Iii	vs	Optional
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Rear lift (at ends)		26,460 lbs	vs
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Front lift (at ends)		11,020 lbs	vs
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Power
PTO (claimed)		205 hp	vs	233 hp
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PTO (tested)		242.3 hp	vs
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Drawbar (tested)		180.1 hp	vs
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Engine		240 hp	vs	307 hp
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Electrical
Ground			vs	Negative
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Charging system		Alternator	vs	Alternator
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Charging amps		240	vs	200
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Charging volts			vs	12
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Tires
Ag front		480/70r34	vs
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Ag rear		520/85r46	vs
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Battery
Volts		12	vs	12
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Number			vs	2
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Compare Challenger MT645C vs New Holland T8.360 Farm Tractors