 The locomotives worked freight and passenger trains radiating from Ankara until TCDD retired them in 1982.Thirty Two locomotives of this type were built, ten by Krauss Maffei and exported to Spain, and twenty-two built in Spain by Babcock & Wilcox.Being Iberian gauge vehicles the overall dimensions are larger, and the engines are 16 cylinder versions, giving a total engine power of 4000 hp.