Of the 45 units of the former class 03.10 streamlined locomotive, which were still in existence after 1945, 26 were on the roster of the German Federal Railroad. By the mid-1950s, the condition of the boilers on these units was so bad that the DB decided to undertake an extensive rebuilding program with new boilers. The appearance of the locomotives changed considerably in the process and resembled the class 01.10 units that had also been equipped with new boilers. However, the rebuilding of the class 03.10 was not so successful technically as with the class 01.10, so that the former soon ended up in fast passenger train service. All of them were stationed in Hagen and were retired by 1966.