Challenger MT645B VS Fordson Power Major specs comparison

Challenger MT645B
General InfosMake | Challenger |
Model | MT645B |
Country | United states |
Production | From 2005 Until 2008 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | Challenger MT645B Manual |
Dimensions, sizes and tires
AG front tires | 380/85R34 |
AG rear tires | 480/80R46 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 18,308 lbs or 8304 kg |
Length | 206 inches [523 cm] |
Width | 118 inches [299 cm] |
Height | 123.6 inches [313 cm] |
Wheelbase | 121.1 inches [307 cm] |
Ground clearance | 22.4 inches [56 cm] |
Turning radius | - |
Rear tread size | 60 to 88 inches |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 449 ci or 7.4 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 235 hp or 175.2 kW |
Engine RPM | 2200 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 159 gal or 601.8 L |
Oil capacity | 20 qts or 18.9 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Challenger MT645B Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | 775 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 150 amps |
Trans system | TechStar |
Trans type | continuously variable transmission (CVT) |
Trans gears | infinite (2-range) forward and reverse |
Clutch system | - |
Wheel drive | 4x4 MFWD 4WD |
Final drive | inboard planetary |
Steering | power |
Braking system | hydraulic wet disc |
Cabin type | Cab standard with heat and A/C |
Differentiel lock | electrohydraulic front and rear |
System | pressure flow compensated |
Valves | 4 to 6 |
Pump flow | - |
SVC flow | - |
Steering flow | - |
Tank capacity | 26.4 gal or 99.9 L |
Hydraulic pressure | 2900 psi or 200.0 bar |
Max flow | 39 gpm or 147.6 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 172.30 hp or 128.5 kW |
Fuel consumption | 12.0 gal/hour or 45.4 l/hour |
Pulling power | 16,954 lbs or 7690 kg |
Claimed power | 200 hp or 149.1 kW |
Real power | 221.55 hp or 165.2 kW |
Engine @RPM | 540@2037 (rpm) |
PTO Clutch | electro-hydraulic wet disc |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 12.0 gal/hour or 45.4 l/hour |
Hitch system | - |
Rear hitch | III |
Rear hitch lift | 15,600 lbs or 7076 kg |
Front hitch | II |
Front hitch lift | 7,700 lbs or 3492 kg |

Fordson Power Major
General InfosMake | Fordson |
Model | Power Major |
Country | United states |
Production | From 1958 Until 1961 |
Price | - |
Tractor type | - |
Fuel | diesel |
Service repair manual | Fordson Power Major Manual |
Dimensions, sizes and tires
AG front tires | 7.50-16 |
AG rear tires | 14-30 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 4,540 lbs or 2059 kg |
Length | 130.5 inches [331 cm] |
Width | 65 inches [165 cm] |
Height | 64.6 inches [164 cm] |
Wheelbase | 80 inches [203 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | 58/62 inches |
Front tread size | 54 to 78 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 199 ci or 3.3 L |
Cylinders | 4 cylinders |
Engine power | - |
Engine RPM | 1600 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 17.4 gal or 65.9 L |
Oil capacity | 7.2 qts or 6.8 L |
Oil change | - |
Starter motor | electric |
Starter volts | 12 V |
Parts And Accessories | Fordson Power Major Parts |
Batteries number | 2 |
Batteries voltage | 6 V |
Battries Amps | - |
Cold Amps | 144 |
Ground force | positive |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | - |
Trans type | unsymchronized gear |
Trans gears | 6 forward and 2 reverse |
Clutch system | dry disc |
Wheel drive | 4x2 2WD |
Final drive | - |
Steering | power assist |
Braking system | differential mechanical shoe |
Cabin type | Open operator station |
Differentiel lock | - |
System | gear pump |
Valves | - |
Pump flow | 5.65 gpm or 21.4 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | 2200 psi or 151.7 bar |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 42.63 hp or 31.8 kW |
Fuel consumption | 3.2 gal/hour or 12.1 l/hour |
Pulling power | 8,038 lbs or 3646 kg |
Claimed power | - |
Real power | 45.39 hp or 33.8 kW |
Engine @RPM | 540@1600 (rpm) |
PTO Clutch | - |
Rear PTO | transmission |
Rear PTO RPM | 540 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 3.0 gal/hour or 11.4 l/hour |
Hitch system | - |
Rear hitch | - |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |
Related tractor comparison


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Choose another tractor
Useful links and guides ....
- Challenger provided us with the latest version of its MT645B service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT645B farm-tractor here
- Get your Fordson Power Major manual book version
- Cabine, electrical And mechanical parts for Fordson Power Major farm-tractor here