Lima-Hamilton 2500HP Transfer Locomotive

4 ft 8+1⁄2 in (1,435 mm)Length73’ 0”Prime moverHamilton Engines and Machinery T89SA (2)Engine type4-stroke dieselAspirationTurbochargedDisplacement6,107 cu in (100.08 L) eachGeneratorWestinghouse 480CTraction motorsWestinghouse 370G (6)CylindersInline 8 (2)Cylinder size9 in × 12 in (229 mm × 305 mm)Loco brakeStraight airTrain brakesAir

Performance figures
Power output	2,500 hp (1,860 kW)

Career
Operators	Pennsylvania Railroad
Class	LS25m
Numbers	5671–5683, 8943–8951
Disposition	Scrapped

The A-3177 (LT-2500) was a diesel-electric transfer-unit locomotive, built by the Lima-Hamilton Corporation between 1950 and 1951. The A-3177 was the final locomotive model produced by Lima-Hamilton before the company merged with the Baldwin Locomotive Works in September 1951 to form the Baldwin-Lima-Hamilton Corporation (BLH).

All twenty-two units were ordered by the Pennsylvania Railroad, with the last one, #5683, completed on September 12, 1951, the day after BLH was formed. All were scrapped, with the last three being retired by 1967. The PRR ordered 22 more but agreed to receive 23 RT-624s from BLH instead.

• Baldwin DT-6-6-2000 and Baldwin RT-624, both similar center-cab style transfer units.

• Kirkland, John F. (November 1985). The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton. Interurban Press. ISBN 0-916374-69-6.
• "The Yard Limit - Lima". Retrieved March 9, 2009.