Challenger

Challenger MT645D

The Challenger MT645D is a row-crop tractor produced from 2011 to 2013 as part of the MT600D Series by Challenger, a part of AGCO. It features a powerful AGCO Power 8.4L 6-cylinder turbocharged air-to-air intercooled diesel engine with 240 hp gross power and a Techstar CVT continuously variable transmission. The tractor includes advanced mechanical features such as four-wheel drive, inboard planetary final drives, electro-hydraulic differential lock, hydrostatic power steering, and hydraulic wet disc brakes. It offers a spacious cab with air-conditioning and optional hydraulic suspension and AGCOMMAND system. The MT645D has a fuel capacity of 167 gallons and a hydraulic system capacity of 29.1 gallons with closed center load sensing hydraulics. It supports a rear hitch type III with a lift capacity of 22,760 lbs and optional front hitch. The PTO is independent with electro-hydraulic clutch and multiple speed options. Dimensions include a 122-inch wheelbase, 215.7-inch length, and 141-inch cab height, with standard agricultural tires sized 480/70R34 front and 520/85R46 rear. Electrical system features a 240 amp alternator and two 12-volt batteries. The MT645D was built in Jackson, Minnesota, USA, and originally priced at $263,455 in 2013.
Power240 hp
Founded2011 - 2013
ModelMT645D

Technical Specifications

Detailed specifications and technical data for Challenger MT645D

Power
PTO (tested)250.8 hp (187.0 kW)
PTO (claimed)205 hp (152.9 kW)
Engine (gross)240 hp (179.0 kW)
Drawbar (tested)170.7 hp (127.3 kW)
Tires
Standard tires (ag)Front: 480/70R34, Rear: 520/85R46
Engine
Typeturbocharged air-to-air intercooled diesel
Coolingliquid-cooled
Starterelectric
Cylinders6-cylinder
EmissionsInterim Tier IV
Rated RPM2100
Bore/Stroke4.370x5.709 inches (111 x 145 mm)
Compression16.7:1
Fuel systemelectronic high-pressure common rail
Pre-heatingthermostart
Displacement513.8 ci (8.4 L)
ManufacturerAGCO Power
Maximum Power270 hp (201.3 kW)
Power (gross)240 hp (179.0 kW)
Starter volts12
Emission controlselective catalytic reduction (SCR)
Capacity
Fuel167 gal (632.1 L)
Hydraulic system29.1 gal (110.1 L)
Exhaust fluid (DEF)16 gal (60.6 L)
Dimensions
Length215.7 inches (547 cm)
Rear axle4.33 by 105 inches (109 by 2667 mm), 4.33 by 118 inches (109 by 2997 mm)
Wheelbase122 inches (309 cm)
Front axle4WD, 4WD Quadlink Suspension
Max weight33070 lbs (15000 kg)
Height (cab)141 inches (358 cm)
Shipping weight24250 lbs (10999 kg)
Electrical
Groundnegative
Batteries2
Battery volts12
Charging amps240
Charging systemalternator
Hydraulics
Typeclosed center load sensing (CCLS)
Valves4 to 6
Capacity29.1 gal (110.1 L)
Pressure2900 psi (200.0 bar)
SCV flow26.4 gpm (99.9 lpm)
Total flow46 gpm (174.1 lpm)
Mechanical
Cabstandard with air-conditioning and OptiRide Plus hydraulic suspension AGCO System 150 (optional); AGCOMMAND (optional)
BrakesHydraulic wet disc brakes
Steeringhydrostatic power
Final drivesinboard planetary
Trailer brakespneumatic (optional), hydraulic (optional)
Four-wheel driveyes
Differential lockelectro-hydraulic
Production
TypeRow-Crop tractor
SeriesMT600D Series
Built inJackson, Minnesota, USA
Original price$263,455 in 2013
Years produced2011 - 2013
Transmission
Typecontinuously variable transmission
Gearsinfinite forward and reverse
TransmissionTechstar CVT
Tractor hitch
DrawbarCat. 3, Cat. 3 Heavy-Duty (optional), Cat. 4 (optional)
Rear TypeIII
Rear lift22760 lbs (10323 kg)
Front HitchIII (optional)
Front lift (at ends)11000 lbs (4989 kg)
Power Take-off (PTO)
Clutchelectro-hydraulic
Rear PTOindependent
Engine RPM540E@1577, 1000E@1605, 1000@1970
Rear PTO Type1000/1000E (1.75), 540E/1000/1000E (optional)