Allis Chalmers
Allis Chalmers D12
The Allis Chalmers D12 is a row-crop tractor produced from 1959 to 1968 as part of the D Series. It was built in West Allis, Wisconsin, USA. The tractor features a 31 hp gasoline engine with options of 2.3L or 2.4L 4-cylinder liquid-cooled engines. It has a 4-speed sliding gear transmission and two-wheel drive with an open operator station. The D12 has a wheelbase of 78.75 inches and weighs 2,800 lbs shipping weight. It includes live hydraulics with 1 or 2 valves, a Snap-Couple rear hitch, and a 540 RPM rear PTO. Variants include the D12 High Clearance and the D10 single-row tractor. The tractor was originally priced at $3,522 in 1968.
Power31 hp
Founded1959 - 1968
ModelD12
Technical Specifications
Detailed specifications and technical data for Allis Chalmers D12
Power
| Engine power | 31 hp (23.1 kW) |
|---|---|
| PTO (tested) | 33.32 hp (24.8 kW) |
| PTO (claimed) | 30 hp (22.4 kW) |
| Drawbar (tested) | 29.43 hp (21.9 kW) |
| Drawbar (claimed) | 25.75 hp (19.2 kW) |
Tires
| Ag rear | 10x24, 11x24 |
|---|---|
| Ag front | 5.00x15 |
Engine
| Power 1 | 31 hp (23.1 kW) |
|---|---|
| Details 1 | Allis-Chalmers gasoline 4-cylinder liquid-cooled vertical L-head |
| Details 2 | Allis-Chalmers gasoline 4-cylinder liquid-cooled |
| Introduced | The larger, 149 cubic inch, engine was introduced on the D12 at serial number 3001 in 1961 |
| Rated RPM 1 | 1650 |
| Rated RPM 2 | 1650 |
| Firing order | 1-2-4-3 |
| Air cleaner 1 | oil bath |
| Air cleaner 2 | oil bath |
| Bore/Stroke 1 | 3.375x3.875 inches (86 x 98 mm) |
| Bore/Stroke 2 | 3.50x3.875 inches (89 x 98 mm) |
| Compression 1 | 7.75:1 |
| Compression 2 | 7.5:1 |
| Displacement 1 | 138.7 ci (2.3 L) |
| Displacement 2 | 149 ci (2.4 L) |
| Engine options | Allis-Chalmers 2.3L 4-cyl gasoline, Allis-Chalmers 2.4L 4-cyl gasoline |
| Oil capacity 1 | 4 qts (3.8 L) |
| Original engine | Used until 149 ci engine appeared in 1961 |
| Starter volts 1 | 6 |
| Coolant capacity 1 | 8 qts (7.6 L) |
Variants
| D10 | single-row tractor |
|---|---|
| D12 High Clearance | cultivation tractor |
Dimensions
| Length | 121 inches (307 cm) |
|---|---|
| Wheelbase | 78.75 inches (200 cm) |
| Rear tread | 52 to 79.25 inches (132 to 201 cm) |
| Front tread | 49.3 to 80 inches (125 to 203 cm) |
| Height (hood) | 52.5 inches (133 cm) |
| Shipping weight | 2,800 lbs (1270 kg) |
| Ballasted weight | 5,630 lbs (2553 kg) |
| Height (exhaust) | 76.5 inches (194 cm) |
| Clearance (rear axle) | 22.25 inches (56 cm) |
| Clearance (front axle) | 20.25 inches (51 cm) |
Hydraulics
| Type | live |
|---|---|
| Valves | 1 or 2 |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Operator station | Open operator station. |
Production
| Type | Row-Crop tractor |
|---|---|
| Series | D Series |
| Built in | West Allis, Wisconsin, USA |
| Original price | $3,522 (1968) |
| Years produced | 1959 - 1968 |
Belt Pulley
| RPM | 1220 |
|---|---|
| Speed | 2556 ft/min (779.07 meters/min) |
Transmission
| Type | sliding gear |
|---|---|
| Gears | 4 forward and 1 reverse |
Tractor hitch
| Type | Snap-Couple |
|---|---|
| Rear Type | I |
Serial Numbers
| 1959 | 1001 |
|---|---|
| 1960 | 1950 |
| 1961 | 2801 |
| 1962 | 3638 |
| 1963 | 5501 |
| 1964 | 6012 |
| 1965 | 9192 |
| 1966 | 9508 |
| 1967 | 9830 |
Power Take-off (PTO)
| Rear PTO Type | 540 |
|---|
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