 As a result, 30 Class 18.5 engines were rebuilt by the firms of Krauss-Maffei and Henschel.These were the series l to o locomotives built for the Reichsbahn between 1927 and 1930.These units were given a newly developed replacement boiler with combustion chamber at the Ingolstadt and Munich-Freimann repair sheds by the Minden engine shed and Krauss-Maffei.