- information on all makes and models of tractors
Tractors > Challenger > MT645B

Challenger MT645B

Challenger MT645B tractor photo
2005 - 2008   MT600B Series
Row-Crop tractor
Previous model:Challenger MT645
Next model:Challenger MT645C
Series next:Challenger MT655B
Series back:Challenger MT635B



Manufacturer:Challenger (a part of AGCO)
Factory:Beauvais, France

Challenger MT645B Engine:

   Sisu 7.4L 6-cyl diesel
full engine details ...


Fuel:159 gal [601.8 L]
Hydraulic system:26.4 gal [99.9 L]

3-Point Hitch:

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

Power Take-off (PTO):

Rear PTO:independent
Clutch:electro-hydraulic wet disc
Rear RPM:540 (1.375)
 1000 (1.375)
 1000 (1.75)
Engine RPM:540@2037
540E@ 1598

Dimensions & Tires:

Wheelbase:121.1 inches [307 cm]
Weight:18308 to 19595 pounds
Front tire:380/85R34
Rear tire:480/80R46
full dimensions and tires ...

MT645B Serial Numbers:

how to read serial numbers...


Challenger MT645B Power:

Engine:235 hp [175.2 kW]
PTO (claimed):200 hp [149.1 kW]
Drawbar (tested):172.30 hp [128.5 kW]
PTO (tested):222.9 hp [166.2 kW]
power test details ...


Chassis:4x4 MFWD 4WD
Final drives:inboard planetary
Differential lock:electrohydraulic front and rear
Brakes:hydraulic wet disc
Trailer brakes:hydraulic*Optional
Cab:Cab standard with heat and A/C. Optional pneumatic cab suspension and automatic climate control.


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


Charging system:alternator
Charging amps:150


Cold-cranking amps:775

Page information:

Last update:August 10, 2018
Copyright:Copyright 2018 TractorData LLC
©2000-2018 - TractorData™. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.