In 2005, two redundant class 753s were rebuilt with Caterpillar engines at CMKS in Ceska Trebova and reclassified as Class 755s by CD. The two locos, 755 001 and 755 002 were regularly employed working a train of limestone from Nucice, near Beroun to Kadan, west of Chomutov and were photographed at Kladno waiting to continue their journey west on 24 June 2006, with 755.002 in the lead.