Power
Power specifications| Engine | no record |
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| PTO | 225 hp claimed |
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| Drawbar | 191 hp claimed |
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| Listed power | 250 hp PTO basis |
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Engines
Engines fitted to the Challenger 55| Caterpillar 7.2L 6-cyl dieselDiesel · 6 cyl | 442 ci |
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Engine details
- Caterpillar 7.2L 6-cyl diesel
- Bore × stroke
- 4.33 in × 5 in
- Rated speed
- 2,100 rpm
- Aspiration
- turbocharged diesel
- Cooling
- liquid-cooled
Transmissions
Transmissions for the Challenger 55| 16-speed full power shiftfull power shift | 16F / 9R |
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| 32-speed creepercreeper | 32F / 18R |
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Weight
Weight specifications| Weight | 26,000 lb unspecified |
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Dimensions
Dimensions specifications| Wheelbase | 86 in |
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| Length | 211 in |
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| Width | 91 in |
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Capacities
Capacities specifications| Fuel tank | 125 gal |
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Hydraulics
Hydraulics specifications| System | variable-displacement load-sensing pressure-compensated |
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| Pump flow | 31.2 gpm |
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| Pressure | 2,750 psi |
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| Remote valves | 3 or 4 |
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Hitch
Hitch specifications| Rear hitch category | III/II |
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| Control | draft control |
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| Rear lift capacity | 12,500 lb |
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PTO
PTO specifications| Rear PTO | independent |
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| Rear PTO speeds | 1000 (1.75) |
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| Clutch | electro-hydraulic wet disc |
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| Engine rpm at PTO speed | 1000@1900 |
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Chassis
Chassis specifications| Drive | tracks |
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| Steering | differential power |
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| Brakes | Wet disc brakes |
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| Cab | Cab standard with air-conditioning |
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Tracks
Tracks specifications| Track width | 16 in |
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Electrical
Electrical specifications| System voltage | 12 V |
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| Charging | alternator |
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| Ground | negative |
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Production
Production specifications| Price new | $133,000 (1998) |
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| Built by | Challenger (a part of Caterpillar) |
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