Firstly, Moha 52 and Hanryu Moha 43 cars were transferred to the Hanwa Line when type 80 cars were introduced to express trains, and other type 42 cars (including Ryuden and Saha of Hanryu Moha 43) were transferred to the Yokosuka line while type 63 cars, that had been used for the Yokosuka Line, were transferred to another line.
まずは急電に80系を投入、それまで使用していたモハ52や半流モハ43を阪和線に転出させただけでなく、残りの整備済みの42系（流電や半流モハ43のサハも含む）を横須賀線に転出させ、横須賀線に応援に入っていた63系を他線に振り向けた。