SPECS / COMPARISON
Allis Chalmers D12 vs John Deere 820
A detailed comparison of the Allis Chalmers D12 and the John Deere 820. Click a model name to view its full specifications.
Horsepower
Allis Chalmers D1223.1 kW (31.0 HP)
John Deere 82023.9 kW (32.1 HP)
| Specification | Allis Chalmers D12 Agricultural Tractors | John Deere 820 Agricultural Tractors |
|---|---|---|
| Tractor Type | Row-Crop Tractor | Utility Tractor |
| Horsepower | 23.1 kW (31.0 HP) | 23.9 kW (32.1 HP) |
| Weight | 1270.0 kg (2799.9 lbs) | — |
| Transmission Type | Sliding gear | Collar shift |
| Length | 307.0 cm (120.9 in.) | 342.0 cm (134.6 in.) |
| Years Made | 1959-1968 | 1968-1973 |
| Engine Model | Allis-Chalmers | John Deere |
| Engine Type | 4-stroke, liquid-cooled, inline | 4-stroke, liquid-cooled, inline |
| Fuel Type | Gasoline | Diesel |
| Cylinders | 4 | 3 |
| Displacement | 2442 cc (149.0 cu in.) | 2489 cc (151.9 cu in.) |
| Bore | 8.89 cm (3.50 in.) | 9.80 cm (3.86 in.) |
| Stroke | 9.80 cm (3.86 in.) | 11.00 cm (4.33 in.) |
| Rear PTO Speed | 540 RPM | 540 RPM |
| Rated RPM | 1650 RPM | 2100 RPM |
| Compression Ratio | 7.5:1 | 16.7:1 |
| Battery | 6 V | Two 12V, 55Ah |
| Starter | Electric | Electric |
| Height | 194.0 cm (76.4 in.) | 199.0 cm (78.3 in.) |
| Wheelbase | 200.0 cm (78.7 in.) | 188.0 cm (74.0 in.) |
| Fuel Tank Capacity | 47.3 l (12.5 gal) | 62.5 l (16.5 gal) |
| Oil Capacity | 3.8 l (1.0 gal) | 6.2 l (1.6 gal) |
| Coolant Capacity | 7.6 l (2.0 gal) | — |
| Gears | 4 forward and 1 reverse | 8 forward and 4 reverse |
| Chassis | 4×2 2WD | 4×2 2WD |
| Max. Travel Speed | 5.6 km/h (Forward: 11.4 MPH (18.3 km/h) Reverse: 3.5 MPH) | — |
| Drawbar Category | I | I |
| Cabin Type | Open operator station | Open operator station or ROPS |
| Steering Type | Manual | — |
| Front Tires | Ag: 5.00-15 | Ag: 5.50-16, 6.00-16Lawn/turf: 27/9.5-15, 23/10.5-12 |
| Rear Tires | Ag: 10-24 | Ag: 12.2-28, 13.6-28Lawn/turf: 16.9-24, 16.5L-16 |
| Hydraulic Type | Live | Open center |
| Valves | 1 or 2 | — |
| Rear PTO Type | — | Live |
| Hydraulic Capacity | — | 37.9 l (10.0 gal) |
| Differential Lock | — | Mechanical rear |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.