On 27 September 1986, Steamranger steam loco 520 was rostered to work an excursion to Halidon (on the Loxton line) in the Murray Mallee.
Unfortunately the steam loco failed in the Adelaide Hills and was replaced by Australian National diesels for the remainder of the journey. After dropping most of its passengers at Halidon, the train, behind Alco branchliner 841, proceeded to Wanbi to allow the loco to run around.
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