Challenger MT645B VS Ford 946 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 |

Ford 946
General InfosMake | Ford |
Model | 946 |
Country | United states |
Production | From 1989 Until 1993 |
Price | - |
Tractor type | Four wheel Drive (4WD) tractor |
Fuel | diesel |
Service repair manual | Ford 946 Manual |
Dimensions, sizes and tires
AG front tires | 18.4x38 |
AG rear tires | 18.4x38 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 32500 lbs or 14742 kg |
Length | 260 inches [660 cm] |
Width | - |
Height | 125 inches [317 cm] |
Wheelbase | 130 inches [330 cm] |
Ground clearance | 16.1 inches [40 cm] |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 855 ci or 14.0 L |
Cylinders | 6 cylinders |
Engine power | 325 hp or 242.4 kW |
Engine RPM | 2100 (rpm) |
Torque | 1057 lb-ft or 1433.3 Nm | Torque RPM | 1400 (rpm) |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 286 gal or 1082.5 L |
Oil capacity | 39.1 qts or 37.0 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Ford 946 Parts |
Batteries number | 4 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | 625 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 90 amps |
Trans system | - |
Trans type | full power shift |
Trans gears | 12 forward and 2 reverse |
Clutch system | 228mm wet disc |
Wheel drive | 4x4 articulated 4WD |
Final drive | outboard planetary |
Steering | articulated power |
Braking system | hydraulic disc |
Cabin type | Cab standard with air-conditioning |
Differentiel lock | - |
System | closed center load sensing |
Valves | 4 to 5 |
Pump flow | 24.5 gpm or 92.7 lpm |
SVC flow | - |
Steering flow | 26.1 gpm or 98.8 lpm |
Tank capacity | 15.3 gal or 57.9 L |
Hydraulic pressure | 2400 psi or 165.5 bar |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | - |
Fuel consumption | - |
Pulling power | - |
Claimed power | 286 hp or 213.3 kW |
Real power | - |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | position control |
Rear hitch | IVN/III |
Rear hitch lift | 13036 lbs or 5913 kg |
Front hitch | - |
Front hitch lift | - |
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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 Ford 946 manual book version
- Cabine, electrical And mechanical parts for Ford 946 farm-tractor here