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 CIRY 1206, an SW9 built in 1951 on October 31, 2008 | |||||||||||||||||||
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TheEMD SW9 is a model of dieselswitcher locomotives built byGeneral Motors Electro-Motive Division between November 1950 and December 1953. Additional SW9s were built by General Motors Diesel in London Ontario Canada from December 1950 to March 1953. Power was provided by anEMD 567B12-cylinder engine, producing 1,200horsepower (895 kW).[1]
786 examples of this model were built for American railroads and 29 were built for Canadian railroads.[2]
The SW9 was EMD's successor to theSW7. Like the SW7, the SW9 retained a power output of 1,200 hp and the same general design. It differed in lacking the upper hood vents found on the SW7, and with the installation of a 567B engine to replace the 567A found in the SW7.[1]
Starting in October 1953 a number of SW9s were built with the 567BC engine. In December 1953, one locomotive, Weyerhaeuser 305, was built with a 567C engine. The 567C was subsequently installed on the SW9's successor, theSW1200.[1]
In addition to the single units produced, tenTR5cow–calf paired sets were produced (eight for theUnion Pacific Railroad, and two for theUnion Railroad of Pittsburgh). The Union Railroad also bought an additional two TR5B "calves".[1]
| Railroad | Quantity | Road numbers | Notes |
|---|---|---|---|
| Canadian National Railways | 10 | 7000–7009 | |
| Canadian Pacific Railway | 6 | 7400–7405 | |
| Chesapeake and Ohio Railway | 5 | 5240–5244 | |
| Great Northern Railway | 3 | 14–16 | to Burlington Northern 146-148 |
| Steel Company of Canada | 1 | 70 | |
| Toronto, Hamilton and Buffalo Railway | 4 | 55–58 | |
| Total | 29 |
| Railroad | QuantityA units | QuantityB units | Road numbers A units | Road numbers B units | Notes |
|---|---|---|---|---|---|
| Union Pacific Railroad | 8 | 8 | 1870A–1877A | 1870B–1877B | Dynamic brakes were added to TR5As by UP shortly after delivery |
| Union Railroad | 2 | 4 | 701–702 | 701C–704C | |
| Total | 10 | 12 |
In 1994Amtrak acquired nine SW9s from various railroads and had them rebuilt by theNational Railway Equipment Company. These switchers were reclassified asEMD SW1000R.[3]
Media related toEMD SW9 locomotives at Wikimedia Commons