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Challenger MT645B

Challenger MT645B tractor
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The Challenger MT645B is a row-crop tractor produced from 2005 to 2008 as part of the MT600B Series by Challenger, a part of AGCO. It features a 235 hp Sisu 7.4L 6-cylinder turbocharged diesel engine, a TechStar continuously variable transmission (CVT), and four-wheel drive with electrohydraulic differential locks. The tractor is built in Beauvais, France, and offers advanced hydraulics, a variety of PTO options, and a comfortable cab with optional pneumatic suspension and climate control. It is designed for heavy-duty agricultural tasks with a robust hitch system and substantial lifting capacities.
Challenger MT645BtractorspecificationsenginetransmissionCVTfarm tractorrow-cropAGCO
Power235 hp
Founded2005 - 2008
ModelMT645B

Technical Specifications

Detailed specifications and technical data for Challenger MT645B

Power

Engine:235 hp (175.2 kW)
PTO (tested):222.9 hp (166.2 kW)
PTO (claimed):200 hp (149.1 kW)
Drawbar (tested):172.30 hp (128.5 kW)

Engine

Type:turbocharged diesel
Model:Sisu 74ETA
Power:235 hp (175.2 kW)
Cooling:liquid-cooled vertical inline
Cylinders:6-cylinder 24-valve
Rated RPM:2200
Air cleaner:dual paper elements
Bore/Stroke:4.251x5.278 inches (108 x 134 mm)
Compression:17.5:1
Pre-heating:1000W coolant heater (Optional)
Displacement:449 ci (7.4 L)
Oil capacity:20 qts (18.9 L)
Starter volts:12
Coolant capacity:35.6 qts (33.7 L)

Weight

Shipping:18,308 lbs (8304 kg)
Operating:19,595 lbs (8888 kg)
Max Drawbar:5620 lbs (2549 kg)
Max rear axle:17044 lbs (7731 kg)
Max front axle:10861 lbs (4926 kg)

Capacity

Fuel:159 gal (601.8 L)
Hydraulic system:26.4 gal (99.9 L)

Electrical

Ground:negative
Batteries:2
Battery CCA:775
Battery volts:12
Charging amps:150
Charging system:alternator

Hydraulics

Type:pressure flow compensated (PFC)
Valves:4 to 6
Capacity:26.4 gal (99.9 L)
Pressure:2900 psi (200.0 bar)
Total flow:39 gpm (147.6 lpm)

Mechanical

Cab:standard with heat and A/C. Optional pneumatic cab suspension and automatic climate control.
Drive:Four-wheel drive
Brakes:Hydraulic wet disc brakes
Final drives:inboard planetary
Power steering:Yes
Trailer brakes:hydraulic (Optional)
Differential lock:electrohydraulic front and rear

Production

Type:Row-Crop tractor
Series:MT600B Series
Built in:Beauvais, France
Years produced:2005 - 2008

Transmission

Type:continuously variable transmission (CVT)
Gears:infinite forward and reverse (2-range)
Model:TechStar
Oil capacity:70.8 qts (67.0 L)

Tractor hitch

Rear Type:III
Front lift:7,700 lbs (3492 kg)
Front Hitch:II (Optional)
Optional front lift:12,100 lbs (5488 kg)
Rear lift (at 24"/610mm):15,600 lbs (7076 kg)

Dimensions & Tires

Width:118 inches (299 cm)
Length:206 inches (523 cm)
Rear tire:480/80R46
Wheelbase:121.1 inches (307 cm)
Front tire:380/85R34
Rear tread:60 to 88 inches (152 to 223 cm)
Height (cab):123.6 inches (313 cm)
Bar rear axle:4.33 by 118 inches (109 by 2997 mm)
Ground clearance:22.4 inches (56 cm)

Power Take-off (PTO)

Clutch:electro-hydraulic wet disc
Rear PTO:independent
Engine RPM:540@2037, 540E@1598, 1000@2031
Rear PTO Type:540 (1.375)
Optional Rear PTO Type:540/540E
Additional Rear PTO Types:1000 (1.375), 1000 (1.75)

Related Models

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Model:MT645C

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Challenger MT645

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