[1] The construction was sublet to British Thomson-Houston of Rugby in the United Kingdom with the body built by Metro Cammell, Birmingham.

[1] By the early 1960s with the twin Paxman 12-RPHL engines coming to the end of their useful life, the Mechanical Branch began looking at repowering options.

[1] The class were mainly confined to metropolitan Sydney operating local trip workings and shunting at Enfield yard.

[5][6] After it arrived at Thirlmere in January 1977, the seized engine that led to its demise was temporarily repaired by members of the Illawarra Group.

In 1982, an engine failed whilst returning from a trip to Picton and as a consequence 4102 was then used as a one-engine shunter until the batteries finally wore out in 1987.