Challenger 55: all source data
All 59 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 Caterpillar) |
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| (no label) | Agricultural Crawler tractor |
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| (no label) | Original price was $133,000 in 1998 |
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Engine| (no label) | Caterpillar 7.2L 6-cyl diesel |
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| Fuel tank | 125 gal | 473.1 L |
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Transmission| (no label) | 16-speed full power shift |
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| (no label) | 32-speed creeper |
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Power| Drawbar (claimed) | 191 hp | 142.4 kW |
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| PTO (claimed) | 225 hp | 167.8 kW |
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Mechanical| Drive | crawler |
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| Steering | differential power |
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| (no label) | Wet disc brakes |
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| (no label) | Cab standard with air-conditioning. |
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Hydraulics| Type | variable-displacement load-sensing pressure-compensated |
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| Pressure | 2750 psi | 189.6 bar |
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| Valves | 3 or 4 |
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| Pump flow | 31.2 gpm | 118.1 lpm |
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| Pump flow | 55 gpm | 208.2 lpm |
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Hitch| Rear Type | III/II |
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| Control | draft control |
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| Rear lift | 12500 lbs | 5670 kg |
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| Rear lift | 15000 lbs | 6804 kg |
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Pto| Rear PTO | independent |
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| Clutch | electro-hydraulic wet disc |
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| Rear PTO Type | 1000 (1.75) |
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| Engine RPM | 1000@1900 |
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Dimensions| Wheelbase | 86 inches | 218 cm |
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| Weight | 26000 lbs | 11793 kg |
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| (no label) | 16-inch tracks |
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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) | Caterpillar 3126 |
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| (no label) | turbocharged diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 442 ci | 7.2 L |
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| Bore/Stroke | 4.33x5.00 inches | 110 x 127 mm |
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| Rated RPM | 2100 |
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| Starter volts | 12 |
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| Coolant capacity (Coolant) | 34.4 qts | 32.6 L |
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Transmission
Transmission options| (no label) | 16-speed full power shift |
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| (no label) | 32-speed creeper |
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Transmission| Type | full power shift |
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| Gears | 16 forward and 9 reverse |
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| Type | creeper |
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| Gears | 32 forward and 18 reverse |
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Dimensions
Tracks| Width | 16 inches | 40 cm |
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| Width | 18 inches | 45 cm |
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| Width | 20 inches | 50 cm |
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| Width | 25 inches | 63 cm |
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| Width | 32 inches | 81 cm |
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Dimensions| Wheelbase | 86 inches | 218 cm |
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| Length | 211 inches | 535 cm |
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| Width | 91 inches | 231 cm |
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| Height (cab) | 120 inches | 304 cm |
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| Height (exhaust) | 125 inches | 317 cm |
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| Weight | 26000 lbs | 11793 kg |
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| Gauge | 60/68/72/76/80/88/90 inches | 152/172/182/193/203/223/228 cm |
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