Rented from IRCON since 1993, these have proved to be reliable workhorses for KTM. Up to 50 are believed to have been in service, though not all at the same time. Notorious for its thick clag, these locomotives were supposed to have been terminated with the arrival of the 26s and 29s. YDM4 6149, YDM4 6181, YDM4 6279 ...