Allis Chalmers HD21 VS Long 900 specs comparison

Allis Chalmers HD21
General InfosMake | Allis Chalmers |
Model | HD21 |
Country | United states |
Production | From 1954 Until 1965 |
Price | - |
Tractor type | Agricultural Crawler tractor |
Fuel | diesel |
Service repair manual | Allis Chalmers HD21 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 | 45500 lbs or 20638 kg |
Length | 198 inches [502 cm] |
Width | - |
Height | 99 inches [251 cm] |
Wheelbase | - |
Ground clearance | - |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 844 ci or 13.8 L |
Cylinders | 6 cylinders |
Engine power | 225 hp or 167.8 kW |
Engine RPM | 1800 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 135 gal or 511.0 L |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | 24 V |
Parts And Accessories | Allis Chalmers HD21 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 | contracting band |
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 | 135.12 hp or 100.8 kW |
Fuel consumption | - |
Pulling power | 40563 lbs or 18399 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 | - |

Long 900
General InfosMake | Long |
Model | 900 |
Country | United states |
Production | From 1974 Until 1977 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | Long 900 Manual |
Dimensions, sizes and tires
AG front tires | 9.5-15 |
AG rear tires | 16.9-34 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 7,750 lbs or 3515 kg |
Length | 155 inches [393 cm] |
Width | 76 inches [193 cm] |
Height | - |
Wheelbase | 92.5 inches [234 cm] |
Ground clearance | - |
Turning radius | 10.8 feet [3.3 m] (with brakes) |
Rear tread size | 59 to 68 inches |
Front tread size | 64 to 88 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 285 ci or 4.7 L |
Cylinders | 4 cylinders |
Engine power | 85 hp or 63.4 kW |
Engine RPM | 2200 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 24 gal or 90.8 L |
Oil capacity | 10.5 qts or 9.9 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Long 900 Parts |
Batteries number | 1 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | - |
Trans type | two-speed power shift |
Trans gears | 16 forward and 8 reverse |
Clutch system | - |
Wheel drive | 4x2 2WD |
Final drive | - |
Steering | hydraulic power |
Braking system | hydraulic |
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 | 59.90 hp or 44.7 kW |
Fuel consumption | 5.5 gal/hour or 20.8 l/hour |
Pulling power | 7,843 lbs or 3557 kg |
Claimed power | 72.88 hp or 54.3 kW |
Real power | 72.86 hp or 54.3 kW |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 5.6 gal/hour or 21.2 l/hour |
Hitch system | - |
Rear hitch | 2 |
Rear hitch lift | 5,300 lbs or 2404 kg |
Front hitch | - |
Front hitch lift | - |
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Useful links and guides ....
- Allis Chalmers provided us with the latest version of its HD21 service repair manual
- Find All mechanical and electrical parts and accessories of Allis Chalmers HD21 farm-tractor here
- Get your Long 900 manual book version
- Cabine, electrical And mechanical parts for Long 900 farm-tractor here