Allis Chalmers D21 Series I VS John Deere 840 specs comparison
Allis Chalmers D21 Series I
General Infos| Make | Allis Chalmers |
| Model | D21 Series I |
| Country | United states |
| Production | From 1963 Until 1969 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | Allis Chalmers D21 Series I Manual |
Dimensions, sizes and tires
| AG front tires | 11.00x16 |
| AG rear tires | 24.5x32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 9500 lbs or 4309 kg |
| Length | 160.6 inches [407 cm] |
| Width | 91.6 inches [232 cm] |
| Height | - |
| Wheelbase | 96.1 inches [244 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 426 ci or 7.0 L |
| Cylinders | 6 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 52 gal or 196.8 L |
| Oil capacity | 12 qts or 11.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | - |
| Parts And Accessories | Allis Chalmers D21 Series I Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | 95 amps |
| Cold Amps | - |
| Ground force | negative |
| Charging system | Delco-Remy generator |
| Charging Volts | - |
| Charging Amps | 32 amps |
| Trans system | Power Director |
| Trans type | sliding gear |
| Trans gears | 8 forward and 2 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | power |
| Braking system | band actuated disc |
| 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 | 93 hp or 69.4 kW |
| Drawbar horsepower | 93.09 hp or 69.4 kW |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Pulling power | 14,840 lbs or 6731 kg |
| Claimed power | 103 hp or 76.8 kW |
| Real power | 103.06 hp or 76.9 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 | 7.1 gal/hour or 26.9 l/hour |
| Hitch system | - |
| Rear hitch | III/II |
| Rear hitch lift | - |
| Front hitch | - |
| Front hitch lift | - |
John Deere 840
General Infos| Make | John Deere |
| Model | 840 |
| Country | United states |
| Production | From 1976 Until 1986 |
| Price | - |
| Tractor type | Utility tractor |
| Fuel | diesel |
| Service repair manual | John Deere 840 Manual |
Dimensions, sizes and tires
| AG front tires | 6.50-16 |
| AG rear tires | 12.4-32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 5004 lbs or 2269 kg |
| Length | 138 inches [350 cm] |
| Width | 65.4 inches [166 cm] |
| Height | 94.1 inches [239 cm] |
| Wheelbase | 74.4 inches [188 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | 53.5 to 73.2 inches |
| Front tread size | 49.6 to 79.5 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 179 ci or 2.9 L |
| Cylinders | 3 cylinders |
| Engine power | 37.5 hp or 28.0 kW |
| Engine RPM | 2400 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | direct injection |
| Fuel tank size | 20.6 gal or 78.0 L |
| Oil capacity | 7.4 qts or 7.0 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 840 Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | alternator |
| Charging Volts | - |
| Charging Amps | 33 amps |
| Trans system | - |
| Trans type | two-speed power shift |
| Trans gears | 16 forward and 8 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | planetary |
| Steering | manual |
| Braking system | hydraulic wet disc |
| Cabin type | Four-post ROPS |
| Differentiel lock | - |
| System | closed center |
| Valves | - |
| Pump flow | 6.1 gpm or 23.1 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 10.8 gal or 40.9 L |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | - |
| Fuel consumption | - |
| Pulling power | - |
| Claimed power | 33.5 hp or 25.0 kW |
| Real power | - |
| Engine @RPM | 1000@2070 (rpm) |
| PTO Clutch | dry disc |
| Rear PTO | live |
| Rear PTO RPM | 540 (rpm) |
| Front PTO | optional |
| Front PTO RPM | 1000 (rpm) |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | - |
| Hitch system | - |
| Rear hitch | II/I |
| Rear hitch lift | 4878 lbs or 2212 kg |
| Front hitch | - |
| Front hitch lift | - |
Related tractor comparison
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John Deere 840 SAME Falcon 50
Allis Chalmers D21 Series I Yanmar YM240
Allis Chalmers D21 Series I Big Bud HN320
Allis Chalmers D21 Series I Bolens G152
Allis Chalmers D21 Series I Steiger Panther II ST-310
Choose another tractor
Useful links and guides ....
- Allis Chalmers provided us with the latest version of its D21 Series I service repair manual
- Find All mechanical and electrical parts and accessories of Allis Chalmers D21 Series I farm-tractor here
- Get your John Deere 840 manual book version
- Cabine, electrical And mechanical parts for John Deere 840 farm-tractor here
