HLCX 1525, and EMD SW1504 in 2008.

(KLWhitehead, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons)


GM-EMD logo.


The EMD SW1504 is a 1,500 hp (1,119 kW) diesel-electric switcher locomotive built by General Motors' Electro-Motive Division. The type was sold only to Mexico's national railroad, Ferrocarriles Nacionales de México; 60 examples were built between May and August 1973. With the breakup of NdeM, the locomotives have been passed to the variety of successor railroad operators in Mexico; some have been sold to leasing companies in the USA.



Type and origin
Power type: Diesel
Builder: General Motors Electro-Motive Division (EMD)
Model: SW1504
Build date: 1973 May–August 1973
Total produced: 60
Configuration: AAR B-B
Gauge: 4 ft 8+1⁄2 in (1,435 mm)
Length: 46 ft 8 in (14.22 m)
Locomotive weight: 248,000 lb (112,000 kg)
Fuel capacity: 600–1,000 US gal (2,300–3,800 L; 500–830 imp gal)
Prime mover: EMD 12-645E
Engine type: V12 2-stroke diesel
Aspiration: Roots blower
Displacement: 9,072 in3 (149 L)
Cylinders: V12
Cylinder size: 9.5 in × 10 in (240 mm × 250 mm)
Transmission Main generator: D32, traction motors: D77/78DC
Locomotive brake: Straight air
Train brakes: Air
Performance figures
Power output: 1,500 hp (1,119 kW)
Locale (when new): Mexico