Stock units were virtually identical to the earlier 1959 Stock units, which were built for the Piccadilly line, although a number of improvements were introduced as a result of experience with the earlier trains. As with the 1959 stock, the DM cars seated 42, the NDM and T cars seated 40 each. The major improvement was the use of motor alternators for the auxiliary supplies using static rectification, instead of the motor generator sets. The drivers brake valve used the more reliable poppet valve instead of rotary type face valves, and the electro-pneumatic valves used plug in connectors, speeding up replacement and reducing faults due to bad electrical connections. Replacement By the early 1990s, the 1962 Stock was due for replacement. This came in the form of the new 1992 Stock, which was developed from the prototype 1986 Stock. The last train on the Central line ran on 17 February 1995. Most units were scrapped, although 15 were transferred to the Northern line to allow the withdrawal of the three prototype 1956 Stock trains as well as some 1972 Mk1 Stock units. However, their use on the Northern line was short-lived, as they were soon replaced by the 1995 Stock, and the final unit was withdrawn on 11 November 1999. Several units remain in use as departmental vehicles. In addition, twelve cars (units 1616+1491, and unit 1744) were sold to the Epping Ongar Railway, but were scrapped after being destroyed by vandals while stabled at Ongar. Preservation One complete unit was preserved by Cravens Heritage Trains in 1995 on withdrawal from service with London Underground. However, CHT announced in January 2023 that their unit had been sold back to London Underground for spare part recovery to maintain LU’s Railhead Adhesion Trains. References External links End view of 1962 Stock car, 1978 Cravens Heritage Trains - owners of the preserved unit. Rolling Stock Summary Pictures on Flickr of this stock 1962 Train-related introductions in 1962