| Manufacturer |
Allis Chalmers |
| Price |
3,522(USD) |
| Model |
D12 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
West Allis, Wisconsin, USA |
ENGINES OVERVIEW
The Allis-Chalmers D12 tractor is powered by a 2.3L or 2.4L four-cylinder gasoline engine, which provides adequate torque for light to moderate agricultural tasks. Pros include its compact size, enhancing maneuverability in smaller fields, while a potential challenge is limited horsepower compared to larger tractors, restricting heavy-duty applications. This model is ideal for hobby farmers or small-scale operations seeking an efficient yet versatile tractor for everyday tasks.
| Description |
Allis-Chalmers 2.3L 4-cyl gasoline Allis-Chalmers 2.4L 4-cyl gasoline |
ENGINE DETAIL 1
The Allis Chalmers D12 tractor features a 138.7 ci gasoline engine with a low compression ratio of 7.75:1, which may limit power output in high-load scenarios but increases reliability and longevity. Its oil bath air cleaner is advantageous for dusty environments, contributing to engine efficiency and reduced maintenance frequency. The 6V starter and 31 hp output make it suitable for light to moderate agricultural tasks, but limited modern power and cooling capacities may restrict its use in larger-scale operations.
| Description |
Allis-Chalmers gasoline 4-cylinder liquid-cooled vertical L-head Original engine, used until 149 ci engine appeared in 1961 |
| Displacemen |
138.7ci / 2.3L |
| Bore/Strok |
3.375x3.875inches / 86x 98 mm |
| Powe |
31hp / 23.1kW |
| Air cleane |
oil bath |
| Compressio |
7.75:1 |
| Rated RP |
1650 |
| Starter volt |
6 |
| Oil capacit |
4 qts/3.8 L |
| Coolant capacit |
8 qts/7.6 L |
ENGINE DETAIL 2
The Allis-Chalmers D12 features a robust 149 cubic inch (2.4L) gasoline engine with a compression ratio of 7.5:1, enhancing torque delivery for various agricultural tasks. The oil bath air cleaner is beneficial for improved filtration in dusty environments, but servicing can be more cumbersome compared to dry filters. With a rated RPM of 1650, it strikes a balance between power and efficiency, making it suitable for medium-duty applications, although higher RPMs might be required for heavy-duty tasks.
| Description |
Allis-Chalmers gasoline 4-cylinder liquid-cooled The larger, 149 cubic inch, engine was introduced on the D12 at serial number 3001 in 1961 |
| Displacemen |
149ci / 2.4L |
| Bore/Strok |
3.50x3.875inches / 89x 98 mm |
| Air cleane |
oil bath |
| Compressio |
7.5:1 |
| Rated RP |
1650 |
| Firing orde |
1-2-4-3 |
ALLIS CHALMERS D12 ENGINES
The Allis-Chalmers D12 is powered by either a 2.3L or a 2.4L 4-cylinder gasoline engine, providing a balance between power and efficiency for light to moderate agricultural tasks. Its 12.5-gallon fuel tank allows for extended operational time, making it suitable for larger plots without frequent refueling. However, the older design may face challenges in availability of replacement parts and fuel efficiency compared to modern tractors.
| Description |
Allis-Chalmers 2.3L 4-cyl gasoline Allis-Chalmers 2.4L 4-cyl gasoline |
| Fuel tan |
12.5gal / 47.3L |
TRANSMISSION
The Allis Chalmers D12 features a sliding gear transmission with 4 forward and 1 reverse speeds, providing simplicity in operation and ease of maintenance. The gear configuration offers sufficient versatility for various agricultural tasks but may present challenges in performance under heavy loads compared to synchronized transmissions. Ideal for light to moderate fieldwork, this design balances efficiency and user-friendliness for less experienced operators.
| Typ |
sliding gear |
| Gear |
4 forward and 1 reverse |
SPEEDS
| Description |
Allis D12 with 10x24 rear tires |
ALLIS CHALMERS D12 TRANSMISSION
The Allis Chalmers D12 tractor features a 4-speed sliding gear transmission, allowing operators to efficiently manage torque and speed for various agricultural tasks. This transmission provides simplicity in operation but may lack the precision of synchronized transmissions, potentially affecting performance in challenging terrains. Optimal for small to medium-scale farming, the D12's design enhances versatility but may pose a learning curve for novice users unfamiliar with sliding gear systems.
| Description |
4-speed sliding gear |
MECHANICAL
The Allis Chalmers D12, a two-wheel drive tractor, features an open operator station that enhances visibility but may expose the operator to the elements. Its lightweight design allows for improved maneuverability but can limit traction in challenging terrains. Ideal for light agricultural tasks and small-scale farming, it balances ease of use with performance, making it a suitable option for novice operators.
| Description |
Two-wheel drive Open operator station |
HYDRAULICS
TRACTOR HITCH
| Rear Typ |
I |
| Typ |
Snap-Couple |
POWER TAKE-OFF (PTO)
ALLIS CHALMERS D12 TIRES
The Allis Chalmers D12 features a front tire size of 5.00x15 and a rear tire size of 11x24, providing a balance of maneuverability and traction for agricultural applications. Its tire configuration allows for effective soil compaction management and stability during field operations, while the agricultural rear tires are ideal for various implements. However, the limited tire size may restrict performance in softer terrains, making it less suitable for heavy lifting or high-horsepower tasks.
| Ag fron |
5.00x15 |
| Ag rea |
11x24 |
DIMENSIONS & TIRES
The Allis Chalmers D12 tractor features a compact wheelbase of 78.75 inches, which enhances maneuverability, making it ideal for tight working conditions. Weighing 2,800 lbs, its stability and traction are well-suited for light to medium-duty agricultural tasks. However, the smaller front tires (5.00x15) may limit its ability to navigate rough terrain compared to models with larger front tires, potentially impacting its performance in heavy soil conditions.
| Wheelbas |
78.75inches / 200cm |
| Weigh |
2,800lbs / 1270kg |
| Front tir |
5.00x15 |
| Rear tir |
10x24 |
D12 SERIAL NUMBERS
D12 SERIAL LOCATION
| Description |
Serial number stamped into the flange where the engine and transmission meet on the left side of the tractor. |
BELT PULLEY
| RP |
1220 |
| Spee |
2556ft/min / 779.07 meters/min |
