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| info | |
| 1959 - 1968 D Series, Row-Crop tractor | |
| Series back: | Allis Chalmers D10 |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | West Allis, Wisconsin, USA |
| Original price (USD): | $3,522 (1968) |
| Variants | |
| D12 High Clearance: | cultivation tractor |
| D10: | single-row tractor |
| Capacity | |
| Fuel: | 12.5 gal [47.3 L] |
| Rear Hitch | |
| Type: | Snap-Couple |
| 3-Point Hitch | |
| Rear Type: | I |
| Power Take-off (PTO) | |
| Rear RPM: | 540 |
| Dimensions & Tires | |
| Wheelbase: | 78.75 inches [200 cm] |
| Weight: | 2800 to 5630 pounds |
| Front tire: | 5.00x15 |
| Rear tire: | 10x24 |
| D12 Serial Numbers | |
| Location: | Serial number stamped into the flange where the engine and transmission meet on the left side of the tractor. |
| Allis Chalmers D12 Power | |
| Engine: | 31 hp [23.1 kW] |
| Drawbar (claimed): | 25.75 hp [19.2 kW] |
| PTO (claimed): | 30 hp [22.4 kW] |
| Drawbar (tested): | 29.43 hp [21.9 kW] |
| PTO (tested): | 33.32 hp [24.8 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Cab: | Open operator station. |
| Hydraulics | |
| Type: | live |
| Valves: | 1 or 2 |
| Belt Pulley | |
| RPM: | 1220 |
| Speed: | 2556 ft/min [779.07 meters/min] |
| Battery | |
| Number: | 1 |
| Volts: | 6 |
| info | |
| Bore/Stroke: | 3.375x3.875 inches [86 x 98 mm] |
| Power: | 31 hp [23.1 kW] |
| Air cleaner: | oil bath |
| Compression: | 7.75:1 |
| Rated RPM: | 1650 |
| Starter volts: | 6 |
| Oil capacity: | 4 qts [3.8 L] |
| Coolant capacity: | 8 qts [7.6 L] |
| Engine Detail | |
| Original engine, used until 149 ci engine appeared in 1961., Allis-Chalmers, gasoline, 4-cylinder, liquid-cooled vertical L-head, 138.7 ci [2.3 L] |
| info | |
| Speeds: | Allis D12 with 10x24 rear tires. |
| Transmission | |
| Type: | sliding gear |
| Gears: | 4 forward and 1 reverse |
| info | |
| Series back: | Allis Chalmers D10 |
| Dimensions | |
| Weight (shipping): | 2,800 lbs [1270 kg] |
| Weight (ballasted): | 5,630 lbs [2553 kg] |
| Wheelbase: | 78.75 inches [200 cm] |
| Length: | 121 inches [307 cm] |
| Height (hood): | 52.5 inches [133 cm] |
| Height (exhaust): | 76.5 inches [194 cm] |
| Clearance (front axle): | 20.25 inches [51 cm] |
| Clearance (rear axle): | 22.25 inches [56 cm] |
| Front tread: | 49.3 to 80 inches [125 to 203 cm] |
| Rear tread: | 52 to 79.25 inches [132 to 201 cm] |
| Allis Chalmers D12 Tires | |
| Ag front: | 5.00x15 |
| Ag rear: | 10x24 |