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Tractor · 2002Unverified

Challenger MT645

Name: Challenger MT645
Brand: Challenger

Challenger MT645 — MT600 Series · 181 hp. Reference specifications; pending source verification.

The Challenger MT645 is a tractor model with a rated output of 181 hp, positioning it within the higher-powered category of its class. It was manufactured from 2002 to 2003. The machine is equipped with a 6-cylinder turbocharged diesel liquid-cooled engine, which transmits power through a four-wheel drive system with a powershift transmission. The listed weight of the Challenger MT645 is 8618 kg, and it is designed for operations spanning approximately 600 to 1,500 acres.

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

Rated power

181 hp

Max power

137.6 kW

Weight

8618 kg

Catalogue coverage

Variants represented

Richest spec table

57 rows

Recorded power

181 hp

Recorded weight

8618 kg

Transmissions

18-speed power shift

Production years

2002-2003

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

The Challenger MT645 is similar to the Massey Ferguson 8260.Reference

Four-wheel driveReference

Power steeringReference

Hydraulic wet disc brakesReference

Cab standard with air-conditioning.Reference

Engine

Sisu 7.4L 6-cyl dieselReference

Fuel tank454.2 LReference

SisuReference

turbocharged aftercooled dieselReference

6-cylinderReference

liquid-cooled verticalReference

Displacement7.4 LReference

Bore/Stroke108 x 134 mmReference

Air cleanerdual paper elementsReference

Compression16.5:1Reference

Rated RPM2200Reference

Starter volts12Reference

Max power137.6 kWReference

Power at rated engine speed135.2 kWReference

Transmission

18-speed power shiftReference

Typepower shiftReference

Gears18 forward and 6 reverseReference

Clutchelectro-hydraulic wet discReference

PTO & Hydraulics

PTO (claimed)134.2 kWReference

PTO (tested)137.6 kWReference

Typeclosed center pressure flow compensated (PFC)Reference

Pressure200.0 barReference

Valves4Reference

Total flow109.8 lpmReference

Total flow147.6 lpmReference

Rear TypeIIIReference

Rear lift (at 24"/610mm)8346 kgReference

Rear PTOindependentReference

Rear PTO Type1000Reference

Engine RPM1000@2091Reference

Power at rated PTO speed137.1 kWReference

Dimensions

Wheelbase307 cmReference

Weight8618 kgReference

Front tire14.9R30Reference

Rear tire18.4R42Reference

Ag front14.9R30Reference

Ag rear18.4R42Reference

Length515 cmReference

Width249 cmReference

Height (cab)307 cmReference

Shipping weight8618 kgReference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Battery volts12Reference

Test results

Diesel 18-speed 4WDSeptember 19 - 26, 2000Link: Nebraska Tractor Test 1782C fileReference

PTO performanceReference

Fuel use40.1 l/hourReference

Fuel use42.8 l/hourReference

Fuel use41.3 l/hourReference

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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