Allis Chalmers HD20 VS ATC Terratrac 556 specs comparison

Allis Chalmers HD20
General InfosMake | Allis Chalmers |
Model | HD20 |
Country | United states |
Production | From 1951 Until 1954 |
Price | - |
Tractor type | Agricultural Crawler tractor |
Fuel | diesel |
Service repair manual | Allis Chalmers HD20 Manual |
Dimensions, sizes and tires
AG front tires | tracks |
AG rear tires | tracks |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 41000 lbs or 18597 kg |
Length | 191 inches [485 cm] |
Width | - |
Height | 95 inches [241 cm] |
Wheelbase | - |
Ground clearance | - |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 660 ci or 10.8 L |
Cylinders | 6 cylinders |
Engine power | 175 hp or 130.5 kW |
Engine RPM | 1700 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 120 gal or 454.2 L |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | 24 V |
Parts And Accessories | Allis Chalmers HD20 Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | - |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | - |
Trans type | torque converter |
Trans gears | 2 forward and 1 reverse |
Clutch system | - |
Wheel drive | crawler |
Final drive | - |
Steering | - |
Braking system | - |
Cabin type | Open operator station |
Differentiel lock | - |
System | - |
Valves | - |
Pump flow | - |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | 117 hp or 87.2 kW |
Drawbar horsepower | 116.7 hp or 87.0 kW |
Fuel consumption | - |
Pulling power | 30,464 lbs or 13818 kg |
Claimed power | - |
Real power | - |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | - |
Rear PTO RPM | - |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | - |
Rear hitch | - |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |

ATC Terratrac 556
General InfosMake | ATC |
Model | Terratrac 556 |
Country | United states |
Production | From 1955 Until 1957 |
Price | - |
Tractor type | Agricultural Crawler tractor |
Fuel | gasoline |
Service repair manual | ATC Terratrac 556 Manual |
Dimensions, sizes and tires
AG front tires | tracks |
AG rear tires | tracks |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | - |
Length | - |
Width | - |
Height | - |
Wheelbase | - |
Ground clearance | - |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 157 ci or 2.6 L |
Cylinders | 4 cylinders |
Engine power | - |
Engine RPM | 2250 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | gasoline |
Fuel injection | - |
Fuel tank size | - |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | - |
Parts And Accessories | ATC Terratrac 556 Parts |
Batteries number | - |
Batteries voltage | - |
Battries Amps | - |
Cold Amps | - |
Ground force | - |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | Terramatic |
Trans type | torque converter |
Trans gears | 3 forward and 1 reverse |
Clutch system | - |
Wheel drive | crawler |
Final drive | - |
Steering | - |
Braking system | - |
Cabin type | Open operator station |
Differentiel lock | - |
System | - |
Valves | - |
Pump flow | - |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | - |
Fuel consumption | - |
Pulling power | - |
Claimed power | - |
Real power | - |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | - |
Rear PTO RPM | - |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | - |
Rear hitch | - |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |
Related tractor comparison


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Useful links and guides ....
- Allis Chalmers provided us with the latest version of its HD20 service repair manual
- Find All mechanical and electrical parts and accessories of Allis Chalmers HD20 farm-tractor here
- Get your ATC Terratrac 556 manual book version
- Cabine, electrical And mechanical parts for ATC Terratrac 556 farm-tractor here