Challenger MT445B VS David Brown 990 Implematic specs comparison
Challenger MT445B
General Infos| Make | Challenger |
| Model | MT445B |
| Country | United states |
| Production | From 2004 Until 2013 |
| Price | - |
| Tractor type | Utility tractor |
| Fuel | diesel |
| Service repair manual | Challenger MT445B Manual |
Dimensions, sizes and tires
| AG front tires | 10.00-16 (2WD) |
| AG rear tires | 480/70R38 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 8,840 lbs or 4009 kg |
| Length | - |
| Width | - |
| Height | - |
| Wheelbase | 97 inches [246 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 268 ci or 4.4 L |
| Cylinders | 4 cylinders |
| Engine power | 85 hp or 63.4 kW |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 40 gal or 151.4 L |
| Oil capacity | - |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | Challenger MT445B Parts |
| Batteries number | - |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | Autopower IV |
| Trans type | four speed power shift |
| Trans gears | 16 forward and reverse |
| Clutch system | wet disc |
| Wheel drive | 4x2 2WD |
| Final drive | inboard planetary |
| Steering | hydrostatic power |
| Braking system | hydraulic wet disc |
| Cabin type | ROPS |
| Differentiel lock | electro-hydraulic |
| System | - |
| Valves | 2 to 4 |
| Pump flow | 26.4 gpm or 99.9 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | 2900 psi or 200.0 bar |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 60.5 hp or 45.1 kW |
| Fuel consumption | 4.9 gal/hour or 18.5 l/hour |
| Pulling power | 8680 lbs or 3937 kg |
| Claimed power | 70 hp or 52.2 kW |
| Real power | 73.4 hp or 54.7 kW |
| Engine @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 | 4.8 gal/hour or 18.2 l/hour |
| Hitch system | electronic top-link draft control |
| Rear hitch | II |
| Rear hitch lift | 7285 lbs or 3304 kg |
| Front hitch | - |
| Front hitch lift | - |
David Brown 990 Implematic
General Infos| Make | David Brown |
| Model | 990 Implematic |
| Country | United states |
| Production | From 1961 Until 1980 |
| Price | - |
| Tractor type | Utility tractor |
| Fuel | diesel |
| Service repair manual | David Brown 990 Implematic Manual |
Dimensions, sizes and tires
| AG front tires | 6.00-16 |
| AG rear tires | 11-32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 4272 lbs or 1937 kg |
| Length | 118 inches [299 cm] |
| Width | 67 inches [170 cm] |
| Height | - |
| Wheelbase | 76.75 inches [194 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | 52/56/60/64/68/72/76 inches |
| Front tread size | 52/56/60/64/68/72/76 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 185.8 ci or 3.0 L |
| Cylinders | 4 cylinders |
| Engine power | 52 hp or 38.8 kW |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 13.74 gal or 52.0 L |
| Oil capacity | 7.8 qts or 7.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | David Brown 990 Implematic Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | generator |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | partially synchronized |
| Trans gears | 12 forward and 4 reverse |
| Clutch system | 279mm dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | manual |
| Braking system | differential mechanical expanding shoe |
| Cabin type | Open operator station |
| Differentiel lock | mechanical rear |
| System | open center |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | 2000 psi or 137.9 bar |
| Max flow | 7.4 gpm or 28.0 lpm |
| Drawbar type | - |
| Claimed power | 43 hp or 32.1 kW |
| Drawbar horsepower | 43.47 hp or 32.4 kW |
| Fuel consumption | 3.4 gal/hour or 12.9 l/hour |
| Pulling power | 6,039 lbs or 2739 kg |
| Claimed power | 48 hp or 35.8 kW |
| Real power | 48.49 hp or 36.2 kW |
| Engine @RPM | 540@1800 (rpm) |
| PTO Clutch | dry disc |
| 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 | II/I |
| 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 MT445B service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT445B farm-tractor here
- Get your David Brown 990 Implematic manual book version
- Cabine, electrical And mechanical parts for David Brown 990 Implematic farm-tractor here
