Challenger MT645D VS Massey-Harris 81 specs comparison
Challenger MT645D
General Infos| Make | Challenger |
| Model | MT645D |
| Country | United states |
| Production | From 2011 Until 2013 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | Challenger MT645D Manual |
Dimensions, sizes and tires
| AG front tires | 480/70R34 |
| AG rear tires | 520/85R46 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 24250 lbs or 10999 kg |
| Length | 215.7 inches [547 cm] |
| Width | - |
| Height | 141 inches [358 cm] |
| Wheelbase | 122 inches [309 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 513.8 ci or 8.4 L |
| Cylinders | 6 cylinders |
| Engine power | 240 hp or 179.0 kW |
| Engine RPM | 2100 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | electronic high-pressure common rail |
| Fuel tank size | 167 gal or 632.1 L |
| Oil capacity | - |
| Oil change | - |
| Starter motor | electric |
| Starter volts | 12 V |
| Parts And Accessories | Challenger MT645D Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | alternator |
| Charging Volts | - |
| Charging Amps | 240 amps |
| Trans system | Techstar CVT |
| Trans type | continuously variable transmission |
| Trans gears | infinite forward and reverse |
| Clutch system | - |
| Wheel drive | 4x4 MFWD 4WD |
| Final drive | inboard planetary |
| Steering | hydrostatic power |
| Braking system | hydraulic wet disc |
| Cabin type | Cab standard with air-conditioning and OptiRide Plus hydraulic suspension AGCO System 150 (optional) |
| Differentiel lock | electro-hydraulic |
| System | closed center load sensing |
| Valves | 4 to 6 |
| Pump flow | - |
| SVC flow | 26.4 gpm or 99.9 lpm |
| Steering flow | - |
| Tank capacity | 29.1 gal or 110.1 L |
| Hydraulic pressure | 2900 psi or 200.0 bar |
| Max flow | 46 gpm or 174.1 lpm |
| Drawbar type | Cat |
| Claimed power | - |
| Drawbar horsepower | 170.7 hp or 127.3 kW |
| Fuel consumption | 11.5 gal/hour or 43.5 l/hour |
| Pulling power | 25705 lbs or 11659 kg |
| Claimed power | 205 hp or 152.9 kW |
| Real power | 250.0 hp or 186.4 kW |
| Engine @RPM | 540E@1577 (rpm) |
| PTO Clutch | electro-hydraulic |
| Rear PTO | independent |
| Rear PTO RPM | 1000 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 13.4 gal/hour or 50.7 l/hour |
| Hitch system | - |
| Rear hitch | III |
| Rear hitch lift | 22760 lbs or 10323 kg |
| Front hitch | III |
| Front hitch lift | 11000 lbs or 4989 kg |
Massey-Harris 81
General Infos| Make | Massey-Harris |
| Model | 81 |
| Country | United states |
| Production | From 1941 Until 1946 |
| Price | 1,121 USD |
| Tractor type | Row Crop tractor |
| Fuel | gasoline |
| Service repair manual | Massey-Harris 81 Manual |
Dimensions, sizes and tires
| AG front tires | 4.00x15 |
| AG rear tires | 9.00x32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 2,895 lbs or 1313 kg |
| Length | 119 inches [302 cm] |
| Width | - |
| Height | 58 inches [147 cm] |
| Wheelbase | - |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 123.7 ci or 2.0 L |
| Cylinders | 4 cylinders |
| Engine power | - |
| Engine RPM | 1500 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | gasoline |
| Fuel injection | Marvel-Schebler TSX-28 carburetor |
| Fuel tank size | 12 gal or 45.4 L |
| Oil capacity | - |
| Oil change | - |
| Starter motor | - |
| Starter volts | 6 V |
| Parts And Accessories | Massey-Harris 81 Parts |
| Batteries number | 1 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | unsynchronized gear |
| Trans gears | 4 forward and 1 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | manual |
| Braking system | - |
| Cabin type | Open operator station |
| Differentiel lock | - |
| System | - |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 16 hp or 11.9 kW |
| Drawbar horsepower | 20.79 hp or 15.5 kW |
| Fuel consumption | - |
| Pulling power | 2,898 lbs or 1314 kg |
| Claimed power | 26 hp or 19.4 kW |
| Real power | - |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | - |
| Rear PTO RPM | - |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | - |
| 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 MT645D service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT645D farm-tractor here
- Get your Massey-Harris 81 manual book version
- Cabine, electrical And mechanical parts for Massey-Harris 81 farm-tractor here
