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Queensland Railways DL class
The DL class was a class of diesel locomotive built by Queensland Railways, Robert Stephenson and Hawthorns and Walkers Limited for Queensland Railways between 1939 and 1961.
==History==
The DL class provided the first diesel locomotive in service in Queensland, DL 1 being built to provide a light weight (maximum axle load) locomotive for the Mt Surprise - Forsayth section of the line from Mareeba, which since cyclonic rainfall in 1927 severely damaged the line, had only been able to support a rail motor hauling 1 or 2 goods wagons.〔(QGR/Stephenson-Hawthorns/Walkers – DL Class ) Queensland's Railway Interest Group〕 DL1 was built by Queensland Railways in 1939, initially with C wheel arrangement but after rough riding during trials around Brisbane it was returned to the workshops and fitted with a pony wheel.
DL2 was built by Robert Stephenson and Hawthorns in 1954 and the final two were built by Walkers Limited in 1961. They were initially used exclusively west of Mt Surprise on the lightly trafficied line to Forsayth.〔 When traffic on that line grew to the point where upgrading it to axle load was justified, the DL class was replaced by the 1720 class, and the 4 locos were then used as shunters at various locations.
Three of the class were withdrawn in 1988-89 and have been preserved.〔(Diesel Locomotives ) Association of Tourist Railways Queensland 13 March 2011〕 DL4 remains in service with Queensland Rail as a backup locomotive for the ''Gulflander'' on the Normanton to Croydon line.〔(DL Class ) Queensland's Great Trains〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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