were stationed in the engine sheds of Darmstadt, Hof, Regensburg, Nuremberg Main, Lindau and Ulm. Although the modernised locomotives were very powerful and the most economical steam engines in the Deutsche Bundesbahn fleet, they were all withdrawn from service between 1961 and 1965. The reason was that, during the rebuild the pump mounting had been directly welded to the boiler which had led to the formation of cracks. The boiler pressure had therefore to be reduced from 16 to 14 bar, which meant the locomotives lost a considerable amount of power. The last locomotives (18 622 and 18 630) were taken out of service in 1965 in Lindau and scrapped in 1966. By contrast number 18 612 is preserved in the German Steam Locomotive Museum (Deutsches Dampflokomotiv-Museum) where it can be viewed. The unmodified S 3/6 engines were all withdrawn by 1962, apart from 18 505. This was still in service until 1967 with the LVA Minden and was not paid off until 1969 as number 018 505. It is preserved in the Neustadt/Weinstraße Railway Museum (Eisenbahnmuseum Neustadt/Weinstraße). Several locomotives were rebuilt into heating locomotives (Heizlokomotive). Number 18 602, stationed in Saarbrücken was mustered out in 1983. Only the wheelsets remain and may be seen in the main railway station. Before its refurbishment, 18 612 was last used as a heating engine. 18 478 Number 18 478 (see infobox), stabled in Ulm was the last S 3/6 to be built in the state railway era (1918) and thus the last one also with a streamlined driver's cab (Windschneidenführerhaus). It found its way to Linz, where it was substantially restored by the Swiss, Serge Lory. Today this engine is in the ownership of the Bavarian Railway Museum (Bayerisches Eisenbahnmuseum) in Nördlingen. The locomotive was made operational again by the Meiningen Steam Locomotive Works (Dampflokwerk Meiningen) and was given a green state railway livery again and the original operating number 3673. From 1996, it could be seen on numerous specials. The engine, temporarily painted in blue for advertising purposes under a contract from the firm of Märklin, has been stabled in Nördlingen since April 2004. In order to be used on future services, considerable work was necessary on the 87-year-old locomotive, which still has its original boiler. The engine had a second roll out in June 2010 and is again certified for passenger trains. See also Royal Bavarian State Railways List of