Challenger 75D VS Allis Chalmers 8550 specs comparison

Challenger 75D
General InfosMake | Challenger |
Model | 75D |
Country | United states |
Production | From 1995 Until 1997 |
Price | - |
Tractor type | Agricultural Crawler tractor |
Fuel | diesel |
Service repair manual | Challenger 75D Manual |
Dimensions, sizes and tires
AG front tires | 30-inch track |
AG rear tires | 30-inch track |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 35720 lbs or 16202 kg |
Length | 232 inches [589 cm] |
Width | 120 inches [304 cm] |
Height | 128 inches [325 cm] |
Wheelbase | 107 inches [271 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | 90 inches |
Front tread size | 90 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 629 ci or 10.3 L |
Cylinders | 6 cylinders |
Engine power | 330 hp or 246.1 kW |
Engine RPM | 2100 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 203 gal or 768.4 L |
Oil capacity | 32 qts or 30.3 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Challenger 75D Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | 900 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 145 amps |
Trans system | - |
Trans type | full power shift |
Trans gears | 10 forward and 2 reverse |
Clutch system | - |
Wheel drive | crawler |
Final drive | - |
Steering | hydrostatic differential steering |
Braking system | hydraulic wet disc |
Cabin type | Cab standard with air-conditioning |
Differentiel lock | - |
System | closed-center pressure-compensated |
Valves | 4 |
Pump flow | 27 gpm or 102.2 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | 29 gal or 109.8 L |
Hydraulic pressure | 2750 psi or 189.6 bar |
Max flow | - |
Drawbar type | - |
Claimed power | 240 hp or 179.0 kW |
Drawbar horsepower | 254.52 hp or 189.8 kW |
Fuel consumption | 15.8 gal/hour or 59.8 l/hour |
Pulling power | 34,760 lbs or 15767 kg |
Claimed power | 285 hp or 212.5 kW |
Real power | 292.57 hp or 218.2 kW |
Engine @RPM | 1000@2050 (rpm) |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 16.0 gal/hour or 60.6 l/hour |
Hitch system | position and draft control |
Rear hitch | IV/III |
Rear hitch lift | 12300 lbs or 5579 kg |
Front hitch | - |
Front hitch lift | - |

Allis Chalmers 8550
General InfosMake | Allis Chalmers |
Model | 8550 |
Country | United states |
Production | From 1978 Until 1981 |
Price | 86,753 USD |
Tractor type | Four wheel Drive (4WD) tractor |
Fuel | diesel |
Service repair manual | Allis Chalmers 8550 Manual |
Dimensions, sizes and tires
AG front tires | 20.8x34 |
AG rear tires | 20.8x34 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 26,400 lbs or 11975 kg |
Length | 285 inches [723 cm] |
Width | 95.5 inches [242 cm] |
Height | 139 inches [353 cm] |
Wheelbase | 126 inches [320 cm] |
Ground clearance | 17 inches [43 cm] |
Turning radius | - |
Rear tread size | 62 to 123 inches |
Front tread size | 62 to 123 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 731 ci or 12.0 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 300 hp or 223.7 kW |
Engine RPM | 2500 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 170 gal or 643.5 L |
Oil capacity | 46 qts or 43.5 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Allis Chalmers 8550 Parts |
Batteries number | 4 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | - |
Trans system | Power Director |
Trans type | partial power shift |
Trans gears | 20 forward and 4 reverse |
Clutch system | - |
Wheel drive | 4x4 articulated 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | hydraulic wet discs |
Cabin type | Acousta Cab II standard with heat and air-conditioning |
Differentiel lock | - |
System | closed center |
Valves | 3 or 4 |
Pump flow | 74.9 gpm or 283.5 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | 210 hp or 156.6 kW |
Drawbar horsepower | 217.92 hp or 162.5 kW |
Fuel consumption | 17.5 gal/hour or 66.2 l/hour |
Pulling power | 26,220 lbs or 11893 kg |
Claimed power | 250 hp or 186.4 kW |
Real power | 253.88 hp or 189.3 kW |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 17.4 gal/hour or 65.9 l/hour |
Hitch system | - |
Rear hitch | IV/III |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |
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Useful links and guides ....
- Challenger provided us with the latest version of its 75D service repair manual
- Find All mechanical and electrical parts and accessories of Challenger 75D farm-tractor here
- Get your Allis Chalmers 8550 manual book version
- Cabine, electrical And mechanical parts for Allis Chalmers 8550 farm-tractor here