Allis Chalmers HD21 VS Ford 6600 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 | - |

Ford 6600
General InfosMake | Ford |
Model | 6600 |
Country | United states |
Production | From 1975 Until 1981 |
Price | - |
Tractor type | Utility tractor |
Fuel | diesel |
Service repair manual | Ford 6600 Manual |
Dimensions, sizes and tires
AG front tires | 7.50-16 |
AG rear tires | 186.9-30 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 5475 lbs or 2483 kg |
Length | 153.3 inches [389 cm] |
Width | 73.2 inches [185 cm] |
Height | 106.6 inches [270 cm] |
Wheelbase | 88 inches [223 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | 52 to 80 inches |
Front tread size | 52.5 to 80.5 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 256 ci or 4.2 L |
Cylinders | 4 cylinders |
Engine power | 72.5 hp or 54.1 kW |
Engine RPM | 2100 (rpm) |
Torque | 200 lb-ft or 271.2 Nm | Torque RPM | 1400 (rpm) |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 20 gal or 75.7 L |
Oil capacity | 9 qts or 8.5 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Ford 6600 Parts |
Batteries number | - |
Batteries voltage | 12 V |
Battries Amps | 128 amps |
Cold Amps | - |
Ground force | - |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 32 amps |
Trans system | Dual-Power |
Trans type | two-speed power shift |
Trans gears | 16 forward and 4 reverse |
Clutch system | 304mm dry disc |
Wheel drive | 4x2 2WD |
Final drive | inboard planetary |
Steering | power |
Braking system | differential mechanical wet disc |
Cabin type | Open operator station |
Differentiel lock | mechanical rear |
System | - |
Valves | 1 or 2 |
Pump flow | 9.7 gpm or 36.7 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | 2100 psi or 144.8 bar |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 55.73 hp or 41.6 kW |
Fuel consumption | 4.6 gal/hour or 17.4 l/hour |
Pulling power | 7,267 lbs or 3296 kg |
Claimed power | 70 hp or 52.2 kW |
Real power | 68.05 hp or 50.7 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 | 4.5 gal/hour or 17.0 l/hour |
Hitch system | top-link draft sensing |
Rear hitch | II |
Rear hitch lift | 4040 lbs or 1832 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 Ford 6600 manual book version
- Cabine, electrical And mechanical parts for Ford 6600 farm-tractor here