Production years
1953-1957
Allis-Chalmers tractor ยท 1953-1957
Allis-Chalmers WD45 Tractor
The Allis-Chalmers WD45 is a 1953-1957 row-crop and general-purpose tractor, developed as the more powerful successor to the WD. Its gasoline version tested at about 39.5 drawbar horsepower and is respected for the Power Director system and lively performance.
Engine
3.7 L inline 4-cylinder gasoline, with tractor-fuel, LP-gas, and diesel options
Power
39.50 drawbar hp tested, gasoline
Weight
Approx. 3,995-4,285 lb
Allis-Chalmers WD45 specifications
| Production years | 1953-1957 |
|---|---|
| Engine | 3.7 L inline 4-cylinder gasoline, with tractor-fuel, LP-gas, and diesel options |
| Power | 39.50 drawbar hp tested, gasoline |
| Transmission | 4-speed sliding-gear manual with Power Director |
| Weight | Approx. 3,995-4,285 lb |
| Fuel type | Gasoline, tractor fuel, LP gas, or diesel |
| PTO | 540 rpm, live PTO |
| Hitch | Snap-Coupler hydraulic system |
What the WD45 is used for
The WD45 was built for row-crop cultivation, plowing, haying, and general farm work. Its Power Director gave the operator a hand-clutch high-low arrangement and helped make PTO work more flexible.
Today, owners use WD45s for light field work, hay equipment, shows, and parades. It works well with period equipment, although its Snap-Coupler system may require an adapter for modern three-point implements.
Why the Allis-Chalmers WD45 stands out
The WD45 is popular for its strong engine, straightforward serviceability, and Power Director, which was advanced for a tractor in its class. Distinctive Allis-Chalmers styling, solid performance, and an active collector following also support its appeal.
Buying a used Allis-Chalmers WD45
Test the Power Director in both ranges and confirm correct PTO and hydraulic operation. Check for clutch slippage, transmission noise, weak brakes, steering wear, engine smoke or low oil pressure, and rear-rim corrosion; inspect the Snap-Coupler components and confirm exact specifications with TractorData.com or Allis-Chalmers serial-number records. Values vary, so check current listings.
Allis-Chalmers WD45 frequently asked questions
How much horsepower does an Allis-Chalmers WD45 have?
The gasoline WD45 tested at about 39.50 drawbar horsepower.
What years was the Allis-Chalmers WD45 made?
Allis-Chalmers produced the WD45 from 1953 through 1957.
What should I check on a WD45 before buying?
Pay particular attention to the Power Director, engine, hydraulics, PTO, clutch, brakes, and Snap-Coupler components.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.