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).

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (August 2016)

Quick Facts A-3177, Type and origin ...

A-3177
Type and origin Power type Diesel-electric Builder Lima-Hamilton Corporation Model A-3177 (LT-2500) Build date May 1950 – September 1951 Total produced 22
Specifications Configuration: ​  • AAR C-C  • UIC Co′Co′ Gauge 4 ft 8+1⁄2 in (1,435 mm) Length 73’ 0” Prime mover Hamilton Engines and Machinery T89SA (2) Engine type 4-stroke diesel Aspiration Turbocharged Displacement 6,107 cu in (100.08 L) each Generator Westinghouse 480C Traction motors Westinghouse 370G (6) Cylinders Inline 8 (2) Cylinder size 9 in × 12 in (229 mm × 305 mm) Loco brake Straight air Train brakes Air
Performance figures Power output 2,500 hp (1,860 kW)
Career Operators Pennsylvania Railroad Class LS25m Numbers 5671–5683, 8943–8951 Disposition Scrapped

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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.

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