Challenger MT445: all source data
All 69 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Challenger (a part of AGCO) |
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| (no label) | Utility tractor |
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| (no label) | Built in England |
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| (no label) | The Challenger MT445 is similar to the Massey Ferguson 4233 and 4335. |
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Engine| (no label) | Perkins 4.2L 4-cyl diesel |
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| ROPS Fuel tank (ROPS) | 29.1 gal | 110.1 L |
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| Cab Fuel tank (Cab) | 34 gal | 128.7 L |
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| Cab Fuel tank (Cab) | 50 gal | 189.2 L |
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Transmission| (no label) | 24-speed power shuttle |
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| (no label) | 12-speed syncromesh |
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| (no label) | 12-speed mechanical shuttle |
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Power| PTO (claimed) | 65 hp | 48.5 kW |
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| Drawbar (tested) | 60.2 hp | 44.9 kW |
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| PTO (tested) | 69.7 hp | 52.0 kW |
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Mechanical| (no label) | Two- or four-wheel drive |
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| (no label) | Power steering |
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| (no label) | Hydraulic wet disc brakes |
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| (no label) | Two-post folding ROPS. Cab available with air-conditioning. |
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Hydraulics| Type | open center |
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| Pressure | 3046 psi | 210.0 bar |
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| Valves | 2 to 4 |
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| SCV flow | 10 gpm | 37.9 lpm |
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| Total flow | 25 gpm | 94.6 lpm |
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Hitch| Rear Type | II |
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| Control | electronic draft control |
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| Rear lift (at 24"/610mm) | 4100 lbs | 1859 kg |
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| Rear lift (at 24"/610mm) | 6200 lbs | 2812 kg |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 540/1000 |
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Dimensions| Wheelbase | 93 inches | 236 cm |
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| Weight | 6211 to 8170 pounds |
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| Front tire | 12.4R24 |
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| Rear tire | 13.6R38 |
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Electrical| Ground | negative |
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| Charging system | alternator |
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| Battery volts | 12 |
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Engine
Engine detail| (no label) | Perkins 3054B |
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| (no label) | diesel |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 258 ci | 4.2 L |
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| Bore/Stroke | 4.055x5.00 inches | 103 x 127 mm |
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| Air cleaner | dual paper elements |
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| Pre-heating | thermostart |
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| Compression | 17.3:1 |
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| Rated RPM | 2200 |
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| Starter volts | 12 |
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Transmission
Transmission options| (no label) | 24-speed power shuttle |
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| (no label) | 12-speed syncromesh |
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| (no label) | 12-speed mechanical shuttle |
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Transmission| Type | power shuttle |
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| Gears | 24 forward and reverse |
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| Clutch | wet disc |
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| Type | syncromesh |
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| Gears | 12 forward and 4 reverse |
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| Type | mechanical shuttle |
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| Gears | 12 forward and reverse |
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Dimensions
Tires| Ag front | 12.4R24 |
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| Ag rear | 13.6R38 |
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Dimensions| Wheelbase | 93 inches | 236 cm |
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| Length | 163 inches | 414 cm |
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| Width | 77 inches | 195 cm |
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| Height (ROPS) | 103 inches | 261 cm |
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| Height (Folded ROPS) | 78 inches | 198 cm |
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| Height (cab) | 100 inches | 254 cm |
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Weight| 2WD ROPS (2WD) | 6211 lbs | 2817 kg |
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| 4WD ROPS (4WD) | 6546 lbs | 2969 kg |
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| 2WD Cab (2WD) | 7619 lbs | 3455 kg |
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| 4WD Cab (4WD) | 8170 lbs | 3705 kg |
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