Challenger MT645: all source data
All 50 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) | Row-Crop tractor |
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| (no label) | Built in Beauvais, France |
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| (no label) | The Challenger MT645 is similar to the Massey Ferguson 8260. |
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Engine| (no label) | Sisu 7.4L 6-cyl diesel |
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| Fuel tank | 120 gal | 454.2 L |
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Transmission| (no label) | 18-speed power shift |
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Power| PTO (claimed) | 180 hp | 134.2 kW |
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| PTO (tested) | 184.49 hp | 137.6 kW |
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Mechanical| (no label) | 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) | Cab standard with air-conditioning. |
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Hydraulics| Type | closed center pressure flow compensated (PFC) |
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| Pressure | 2900 psi | 200.0 bar |
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| Valves | 4 |
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| Total flow | 29 gpm | 109.8 lpm |
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| Total flow | 39 gpm | 147.6 lpm |
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Hitch| Rear Type | III |
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| Rear lift (at 24"/610mm) | 18400 lbs | 8346 kg |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 1000 |
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| Engine RPM | 1000@2091 |
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Dimensions| Wheelbase | 121 inches | 307 cm |
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| Weight | 19000 lbs | 8618 kg |
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| Front tire | 14.9R30 |
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| Rear tire | 18.4R42 |
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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) | Sisu |
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| (no label) | turbocharged aftercooled diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled vertical |
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| Displacement | 449 ci | 7.4 L |
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| Bore/Stroke | 4.251x5.278 inches | 108 x 134 mm |
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| Air cleaner | dual paper elements |
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| Compression | 16.5:1 |
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| Rated RPM | 2200 |
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| Starter volts | 12 |
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Transmission
Transmission| Type | power shift |
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| Gears | 18 forward and 6 reverse |
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| Clutch | electro-hydraulic wet disc |
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Dimensions
Tires| Ag front | 14.9R30 |
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| Ag rear | 18.4R42 |
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Dimensions| Wheelbase | 121 inches | 307 cm |
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| Length | 203 inches | 515 cm |
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| Width | 98.2 inches | 249 cm |
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| Height (cab) | 121 inches | 307 cm |
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| Shipping weight | 19000 lbs | 8618 kg |
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