The XR class are a class of diesel locomotives built by

Pacific National Pacific National is one of Australia's largest rail freight businesses. History In February 2002, National Rail Corporation, National Rail's freight operations and rollingstock, jointly owned by the Government of Australia, Federal, Governm ...

South Dynon Locomotive Depot South Dynon Locomotive Depot is an Australian locomotive depot in Melbourne, purpose built for the servicing of diesel and electric locomotives by the Victorian Railways opening in July 1961. It was built adjacent to the Dynon marshalling yards ...

History

Between 2002 and 2006,

rebuilt six X class locomotives with engines cascaded from

G class G class or Class G may refer to: Railways * NZR G class (1928), a type of steam locomotive used in New Zealand * Tasmanian Government Railways G class, a class of 0-4-2T steam locomotive used in Australia * V/Line G class, a class of diesel-ele ...

locomotives, larger radiators, and a new cab to provide better driver visibility. The first six (XR550 - XR555) were converted from X38, X35, X40, X33, X34 and X32 respectively. A seventh (XR556) was planned to be converted from X36 but never eventuated. A further three (XR557 - XR559) were built in 2004/05 by Freight Australia's successor,

, as new-builds. In 2020, several were placed in storage due to a poor grain harvest. As at October 2022, all nine were active, seven on the broad gauge and two (XR558 and XR559) on standard gauge. As of November 2024 all are on BG except XR555 (Stored) & XR559 Australia Wide Fleet List ''Motive Power'' issue 144 November 2022 page 69 The class are mechanically similar to the later XRB class

B unit A B-unit, in railroad terminology, is a locomotive unit (generally a diesel locomotive) which does not have a control cab or crew compartment, and must therefore be operated in tandem with another coupled locomotive with a cab (an A-unit) ...

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{{VRLocos, state=collapsed Broad gauge locomotives in Australia Co-Co locomotives Diesel–electric locomotives of Australia Pacific National diesel locomotives Railway locomotives introduced in 2004 Standard-gauge locomotives of Australia XR class Freight locomotives