South Australian Railways 700 class (diesel)
The 700 class are a class of diesel locomotives built by AE Goodwin, Auburn for the South Australian Railways in 1971-1972. They are identical to the New South Wales 442 class locomotive.
History
A total of six 700 class locomotives were built for the South Australian Railways by AE Goodwin, Auburn and are an Alco DL500g model. They were built in 1971/72, with the first three delivered on broad gauge bogies and the last three on standard gauge bogies. In March 1978 all were included in the transfer of the South Australian Railways to Australian National. Over the years the locomotives frequently switched gauges before all were put on the broad gauge in 1987. Following the Adelaide-Melbourne railway line being converted to standard gauge in 1995, all of the 700 class were converted to standard gauge. The 700 class operated on all main lines in South Australia as well as interstate to Broken Hill and Melbourne.In 1986, a new computer system required the class leaders of the former South Australian Railways to be renumbered as the last member of the class, with 700 becoming 706. In June 1994 702 was damaged by fire and a New South Wales 442 class locomotive was purchased with the intention of combining the two locomotives as one but the plan did not proceed and both were scrapped.
The remaining five were included in the sale of Australian National to Australian Southern Railroad in November 1997. As of January 2016 all locomotives are now stored with 701, 703 & 704 stored serviceable, 705 stored after a major failure in 2015 & 706 stored after a major failure in 2005
Status
As at September 2016, the status of the fleet was:| Number | In Service | Current/Last Owner | Current Status | Gauge | Notes |
| 700 | June 1971 | Genesee & Wyoming | Stored | Broad | Renumbered 706, Stored after failure |
| 701 | July 1971 | Genesee & Wyoming | Stored | Standard | Stored serviceable |
| 702 | September 1971 | Australian National | Scrapped | Standard | - |
| 703 | December 1971 | Genesee & Wyoming | Stored | Standard | Stored serviceable |
| 704 | July 1972 | TransVolution | Stored | Broad | Stored serviceable |
| 705 | March 1972 | Genesee & Wyoming | Stored | Standard | Stored after failure |