John Deere 8770 VS Allis Chalmers HD21 specs comparison
John Deere 8770
General Infos| Make | John Deere |
| Model | 8770 |
| Country | United states |
| Production | From 1993 Until 1996 |
| Price | 114,945 USD |
| Tractor type | Four wheel Drive (4WD) tractor |
| Fuel | diesel |
| Service repair manual | John Deere 8770 Manual |
Dimensions, sizes and tires
| AG front tires | 24.5R-32 |
| AG rear tires | 24.5R-32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 32,960 lbs or 14950 kg |
| Length | 268.9 inches [683 cm] |
| Width | - |
| Height | - |
| Wheelbase | 134 inches [340 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 619 ci or 10.1 L |
| Cylinders | 6 cylinders |
| Engine power | 300 hp or 223.7 kW |
| Engine RPM | 2100 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 220 gal or 832.7 L |
| Oil capacity | 33.8 qts or 32.0 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 8770 Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | 925 |
| Ground force | negative |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | Power Shift |
| Trans type | full power shift |
| Trans gears | 12 forward and 2 reverse |
| Clutch system | hydraulic wet disc |
| Wheel drive | 4x4 articulated 4WD |
| Final drive | inboard planetary |
| Steering | hydrostatic power |
| Braking system | hydraulic wet discs |
| Cabin type | Sound-Gard cab standard |
| Differentiel lock | - |
| System | closed center pressure compensated |
| Valves | 3 to 5 |
| Pump flow | 44.8 gpm or 169.6 lpm |
| SVC flow | 33.3 gpm or 126.0 lpm |
| Steering flow | - |
| Tank capacity | 38 gal or 143.8 L |
| Hydraulic pressure | 2530 psi or 174.4 bar |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 242.52 hp or 180.8 kW |
| Fuel consumption | 15.8 gal/hour or 59.8 l/hour |
| Pulling power | 33,464 lbs or 15179 kg |
| Claimed power | 256 hp or 190.9 kW |
| Real power | 286.31 hp or 213.5 kW |
| Engine @RPM | - |
| PTO Clutch | hydraulic wet disc |
| 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 | draft sensing |
| Rear hitch | 3 |
| Rear hitch lift | 14,980 lbs or 6794 kg |
| Front hitch | - |
| Front hitch lift | - |
Allis Chalmers HD21
General Infos| Make | 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 | - |
Related tractor comparison
John Deere 8770 Massey-Harris 444
Allis Chalmers HD21 International Harvester D-217
Allis Chalmers HD21 Custom 98
John Deere 8770 Allis Chalmers HD9
John Deere 8770 Oliver Super 55
Allis Chalmers HD21 John Deere 520
Choose another tractor
Useful links and guides ....
- John Deere provided us with the latest version of its 8770 service repair manual
- Find All mechanical and electrical parts and accessories of John Deere 8770 farm-tractor here
- Get your Allis Chalmers HD21 manual book version
- Cabine, electrical And mechanical parts for Allis Chalmers HD21 farm-tractor here
