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New South Wales class 73
Australia | 1970 | 50 produced
Nos. 7321 and 7307 in July 2014 in Oberon, New South Wales
Nos. 7321 and 7307 in July 2014 in Oberon, New South Wales
Maksym Kozlenko

In 1969, the New South Wales government initially ordered 20 diesel-hydraulic shunters, which were soon supplemented by 30 more. The engine came from Caterpillar and the transmission from Voith. They were used almost all over the state and replaced all remaining steam locomotives in shunting service. They were able to prove on several occasions that, unlike diesel-electric locomotives, they could also run on flooded tracks. Due to a lack of demand, they were phased out in 1987 and by 1991 almost all of them had either been handed over to private companies or museum railways.

General
Built1970-1973
ManufacturerWalkers
Axle configB-B 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length39 ft 4 in
Wheelbase26 ft 6 in
Service weight109,760 lbs
Adhesive weight109,760 lbs
Axle load27,440 lbs
Power
Power sourcediesel-hydraulic
Top speed40 mph
Starting effort25,000 lbf
EngineCaterpillar D379B
Engine typeV8 diesel
Engine output700 hp (522 kW)
Power Plant
Boiler
Calculated Values
diesel locomotive
switcher
last changed: 03/2023
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