About the Allis-Chalmers WD
The WD brought Allis-Chalmers' two-clutch Power Control system to the row-crop tractor market when it was introduced in 1948. The foot clutch handled the main drive, while the hand-operated wet clutch let the PTO keep turning when the tractor slowed or stopped.
Built through 1953, the WD also introduced power-shifted rear wheels and used a four-speed transmission. The WD was followed by the higher-powered WD45.
Serial Number Reference
Serial number locations: The tractor serial number is stamped at the left brake cover or the left rear of the axle housing. The engine serial number is on the left-hand side of the engine near the carburetor.
The table below shows the beginning tractor serial number for each Model WD year:
1948-1949
| Model WD year |
Beginning serial number |
| 1948 |
7 |
| 1949 |
9,250 |
1950-1951
| Model WD year |
Beginning serial number |
| 1950 |
35,445 |
| 1951 |
72,328 |
1952-1953
| Model WD year |
Beginning serial number |
| 1952 |
105,182 |
| 1953 |
131,243 |
1948-1950
| Model WD year |
Beginning serial number |
| 1948 |
7 |
| 1949 |
9,250 |
| 1950 |
35,445 |
1951-1953
| Model WD year |
Beginning serial number |
| 1951 |
72,328 |
| 1952 |
105,182 |
| 1953 |
131,243 |
1948-1953
| Model WD year |
Beginning serial number |
| 1948 |
7 |
| 1949 |
9,250 |
| 1950 |
35,445 |
| 1951 |
72,328 |
| 1952 |
105,182 |
| 1953 |
131,243 |
Total production: 146,125 Model WD tractors.
Allis-Chalmers WD Paint Reference
For restoration planning, the Allis-Chalmers WD is listed in the Allis-Chalmers tractor paint guide with the original paint references below.
Allis-Chalmers WD paint reference by production period
| Production period |
Metal |
Wheels |
Disc |
Chassis |
Trim |
| 1929 through 1960 |
Persian Orange 1 |
Persian Orange 1 |
Persian Orange 1, Aluminum |
Persian Orange 1 |
Persian Orange 1 |
Paint placement can vary by production year, series, and equipment configuration.
