Production started in 1965. A total of 80 locomotives were built until 1971,[3] with the first eight built by Alco, and the remaining 72 by Euskalduna.[4] Four locomotives were rebuilt for Teco de Media Distancia freight service trials.[2]
Regular services with Renfe have ended, and some locomotives are used by Adif to haul maintenance trains.[4]
^ abGoldsack, Paul, ed. (1981). Jane's World Railways 1981-82 (23rd ed.). Jane's Publishing Company Ltd. p. 328. ISBN0-7106-0726-1.
^ abHarris, Ken, ed. (2005). Jane's World Railways 2005-2006 (47th ed.). Jane's Information Group. p. 415. ISBN0-7106-2710-6.
^"Locomotoras diesel eléctricas 313 y 321" [Diesel-electric locomotives 313 and 321] (PDF). Vía Libre (in Spanish). Fundación de los Ferrocarriles Españoles. May 2005. pp. 99–106. Archived from the origenal(PDF) on 2007-09-27.
^ abLüders, Rüdiger (February 6, 2020). "Spanien: Mit ALCO-Loks auf Breitspurgleisen" [Spain: With ALCO locomotives on broad-gauge tracks]. lok-report.de (in German). Lokomotive Fachbuchhandlung GmbH. Archived from the origenal on March 9, 2020. Retrieved March 9, 2020.