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Tractor · 2005Unverified

Challenger MT645B

Name: Challenger MT645B
Brand: Challenger

Challenger MT645B — MT600B Series · 205 hp. Reference specifications; pending source verification.

The Challenger MT645B is a tractor with a rating of approximately 205 horsepower, positioning it at the powerful end of its class. It was produced between 2005 and 2008. The tractor is equipped with a 6-cylinder turbocharged diesel liquid-cooled engine, paired with four-wheel drive and a continuously variable transmission. Its operating weight is listed as 18308 to 19595 pounds, making it suitable for operations covering 600–1,500 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

205 hp

Max power

166.2 kW

Weight

18308 to 19595 pounds

Catalogue coverage

Variants represented

Richest spec table

91 rows

Recorded power

205 hp

Transmissions

continuously variable transmission (CVT)

Production years

2005-2008

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerChallenger (a part of AGCO)Reference

Row-Crop tractorReference

Built in Beauvais, FranceReference

Four-wheel driveReference

Final drivesinboard planetaryReference

Differential lockelectrohydraulic front and rearReference

Power steeringReference

Hydraulic wet disc brakesReference

Trailer brakeshydraulicReference

Cab standard with heat and A/C. Optional pneumatic cab suspension and automatic climate control.Reference

Engine

Sisu 7.4L 6-cyl dieselReference

Engine175.2 kWReference

Drawbar (tested)128.5 kWReference

Sisu 74ETAReference

turbocharged dieselReference

6-cylinder 24-valveReference

liquid-cooled vertical inlineReference

Displacement7.4 LReference

Bore/Stroke108 x 134 mmReference

Power175.2 kWReference

Air cleanerdual paper elementsReference

Pre-heating1000W coolant heaterReference

Compression17.5:1Reference

Rated RPM2200Reference

Starter volts12Reference

Oil capacity18.9 LReference

Coolant capacity33.7 LReference

Max power166.2 kWReference

Power at rated engine speed152.7 kWReference

Max power128.5 kWReference

Transmission

continuously variable transmission (CVT)Reference

TransmissionTechStarReference

Typecontinuously variable transmission (CVT)Reference

Gearsinfinite forward and reverse (2-range)Reference

Oil capacity67.0 LReference

PTO & Hydraulics

PTO (claimed)149.1 kWReference

PTO (tested)166.2 kWReference

Hydraulic system99.9 LReference

Typepressure flow compensated (PFC)Reference

Capacity99.9 LReference

Pressure200.0 barReference

Valves4 to 6Reference

Total flow147.6 lpmReference

Rear TypeIIIReference

Rear lift (at 24"/610mm)7076 kgReference

Front HitchIIReference

Front lift3492 kgReference

Front lift5488 kgReference

Rear PTOindependentReference

Clutchelectro-hydraulic wet discReference

Rear PTO Type540 (1.375)Reference

Rear PTO Type540/540EReference

Rear PTO Type1000 (1.375)Reference

Rear PTO Type1000 (1.75)Reference

Engine RPM540@2037Reference

Engine RPM540E@ 1598Reference

Engine RPM1000@2031Reference

Power at rated PTO speed165.2 kWReference

Capacities

Fuel601.8 LReference

Dimensions

Wheelbase307 cmReference

Weight18308 to 19595 poundsReference

Front tire380/85R34Reference

Rear tire480/80R46Reference

Ag front380/85R34Reference

Ag rear480/80R46Reference

Length523 cmReference

Width299 cmReference

Height (cab)313 cmReference

Ground clearance56 cmReference

Bar rear axle109 by 2997 mmReference

Rear tread152 to 223 cmReference

Shipping8304 kgReference

Operating8888 kgReference

Max Drawbar2549 kgReference

Max front axle4926 kgReference

Max rear axle7731 kgReference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps150Reference

Batteries2Reference

Battery CCA775Reference

Battery volts12Reference

Test results

Diesel CVT 4WDApril 12 - 20, 2006Link: OCED Tractor Test 1876 fileReference

PTO performanceReference

Fuel use44.7 l/hourReference

Fuel use45.8 l/hourReference

Fuel use45.4 l/hourReference

Drawbar performanceReference

Pull at 9.6 KPHReference

Max pull7690 kgReference

Pull at 10 KPHReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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