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GE U18B
A Maine Central Railroad U18B, on lease to the short-lived Niagara and Western New York Railroad, July 2002
The GE U18Bdiesel-electric locomotive was introduced by GE Transportation as a branch line roadswitcher in 1973. It was the only North American locomotive powered by the 8-cylinder 7FDL engine.[citation needed]
"Chapter 1". Locomotive Service Manual: Running Maintenance and Trouble-Shooting for Series-7 Road Locomotives. GEK-30150. General Electric Company. 1978.
GE Transportation. Operating Manual - Diesel-Electric Locomotive - GEJ-3856C (1973).