Through this development, the local trains of Kansai Line were changed to the series 103, and 101-type cars without air-conditioning of Katamachi Line were replaced with the air-conditioned, as well as extra trailer cars of Keihanshin Local Line were transferred to Katamachi Line's to introduce their 7-car train series.
これによって関西線各停の103系化、片町線の非冷房101系の置換えと余剰T車を活用した7連化を実施した。