The replaced cars without air-conditioning were used for a while as instruction cars, but later the two MM units were converted to air-conditioned car series WAU102 and underwent life-prolonging NB repairs, while T and Tc cars were abolished.
営業運行を外された非冷房編成はしばらく訓練車として使用されたが、後にMM2ユニットはWAU102冷房改造と延命NB工事を実施、TとTcは廃車された。