About the Allis-Chalmers 7040
The Allis-Chalmers 7040 followed the 7030 in 1975 as a larger 7000 Series diesel tractor. It used a 7.0-liter six-cylinder engine, a 20-speed or 12-speed partial power-shift transmission, and independent PTO.
The 7040 was built through 1977 and was followed by the 7045. Its standard Acousta cab, power steering, and wet-disc brakes show how the 7000 Series moved toward larger and more comfortable field tractors.
Serial Number Reference
Serial number locations: The tractor serial number is stamped above the PTO shield.
The table below shows the beginning tractor serial number for each Model 7040 year:
1975-1975
| Model 7040 year |
Beginning serial number |
| 1975 |
1,303 |
1976-1976
| Model 7040 year |
Beginning serial number |
| 1976 |
4,089 |
1977-1977
| Model 7040 year |
Beginning serial number |
| 1977 |
6,839 |
1975-1976
| Model 7040 year |
Beginning serial number |
| 1975 |
1,303 |
| 1976 |
4,089 |
1977-1977
| Model 7040 year |
Beginning serial number |
| 1977 |
6,839 |
1975-1977
| Model 7040 year |
Beginning serial number |
| 1975 |
1,303 |
| 1976 |
4,089 |
| 1977 |
6,839 |
Total production: Unknown.
Allis-Chalmers 7040 Paint Reference
For restoration planning, the Allis-Chalmers 7040 is listed in the Allis-Chalmers tractor paint guide with the original paint references below.
Allis-Chalmers 7040 paint reference by production period
| Production period |
Metal |
Wheels |
Disc |
Chassis |
Trim |
| 1961 through 1977 |
Persian Orange 2 |
Cream |
Cream, Aluminum |
Maroon |
Cream roof |
Paint placement can vary by production year, series, and equipment configuration.
