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Challenger MT645

Challenger MT645 tractor
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The Challenger MT645 is a row-crop tractor produced from 2002 to 2003 as part of the MT600 Series. Built in Beauvais, France, it is similar to the Massey Ferguson 8260. It features a Sisu 7.4L 6-cylinder turbocharged aftercooled diesel engine, an 18-speed power shift transmission, and four-wheel drive. The tractor includes power steering, hydraulic wet disc brakes, and a cab with air-conditioning. It has a PTO claimed power of 180 hp and tested power of 184.49 hp. The MT645 has a wheelbase of 121 inches, weighs 19000 lbs, and uses 14.9R30 front and 18.4R42 rear tires.
Challenger MT645tractorspecificationsenginetransmissionhydraulicsdimensionsfarm tractor
Power200 hp[P]
Founded2002 - 2003
ModelMT645

Technical Specifications

Detailed specifications and technical data for Challenger MT645

Power

PTO (tested):184.49 hp (137.6 kW)
PTO (claimed):180 hp (134.2 kW)

Tires

Ag rear:18.4R42
Ag front:14.9R30

Engine

Make:Sisu
Type:turbocharged aftercooled diesel
Cooling:liquid-cooled vertical
Cylinders:6-cylinder
Rated RPM:2200
Air cleaner:dual paper elements
Bore/Stroke:4.251x5.278 inches (108 x 134 mm)
Displacement:449 ci (7.4 L)
Starter volts:12
Compression ratio:16.5:1

Dimensions

Width:98.2 inches (249 cm) *Minimum width
Length:203 inches (515 cm)
Wheelbase:121 inches (307 cm)
Height (cab):121 inches (307 cm)
Shipping weight:19000 lbs (8618 kg)

Electrical

Ground:negative
Battery volts:12
Charging system:alternator

Hydraulics

Type:closed center pressure flow compensated (PFC)
Valves:4
Pressure:2900 psi (200.0 bar)
Total flow:29 gpm (109.8 lpm)
Optional flow:39 gpm (147.6 lpm)

Mechanical

Cab:standard with air-conditioning
Drive:Four-wheel drive
Brakes:Hydraulic wet disc brakes
Steering:Power steering

Production

Type:Row-Crop tractor
Notes:The Challenger MT645 is similar to the Massey Ferguson 8260.
Series:MT600 Series
Built in:Beauvais, France
Years produced:2002 - 2003

Transmission

Type:power shift
Gears:18 forward and 6 reverse
Clutch:electro-hydraulic wet disc

Tractor hitch

Rear Type:III
Rear lift (at 24"/610mm):18400 lbs (8346 kg)

Power Take-off (PTO)

Rear PTO:independent
Engine RPM:1000@2091
Rear PTO Type:1000

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