Refurbishment
As of April 2003, there were 138 DD51s still in service, with the vast majority operated by JR Freight. Of these, many have recently undergone life extension refurbishment, which includes removal of steam generator equipment where still fitted. These locos are distinguished by a new livery of blue with grey upper surfaces separated by a white stripe, and cream end panels.
DD51 class locomotives also formed the basis for the DD17, DD18, and DD19 self-propelled snow plough units.
Read more about this topic: JNR Class DD51