In 1961, the
Emu Bay Railway placed an order for three
diesel-hydraulic locomotives with
Tulloch. However, before they were built, Tullochs entered
administration and the order was transferred to
Walkers Limited. All were delivered in August 1963. A fourth was assembled at the
Tasmanian Government Railways’
Launceston Railway Workshops in April 1966. In 1969/70, the pneumatic control gear was replaced with electro-pneumatic equipment to allow the class to operate in multiple with the
11 class. Between 1980 and 1992 all were repowered with the
Caterpillar D398B as fitted to the 11 class. All were included in the April 1998 sale of the Emu Bay Railway to the
Australian Transport Network. Following the June 2000 closure of the Hellyer Mine, all were stored and disposed of to preservation organisations. ==Status table==