Córas Iompair Éireann's first push–pull trains were conversions of their 2600 Class DMUs (Park Royal body, AEC motors) running with the long withdrawn 201 Class Metropolitan-Vickers Bo-Bo diesels re-engined with EMD 567 prime movers; the cars were subsequently renumbered in the 6100 series (Driving van trailers), 6200 series (trailer with "blind" cab end) and 6300 series (double-gangway intermediate car). In push–pull formation, they operated Dublin Suburban Rail services from 1971 until the inauguration of the DART EMU service in July 1984. The remaining push–pull trains operated on Dublin-Maynooth commuter services until they were supplanted by Cravens, and later by the modern 2600 Class DMUs.