EMD SW1504

HLCX 1525

Type and origin
Power type	Diesel
Builder	General Motors Electro-Motive Division (EMD)
Model	SW1504
Build date	May -August 1973
Total produced	60

Specifications
AAR wheel arr	B-B
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Length	46 ft 8 in (14.22 m)
Loco 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 645
Engine type	2-stroke diesel
Aspiration	Roots blower
Cylinders	V12
Cylinder size	9.5 in × 10 in (240 mm × 250 mm)
Transmission	Main generator: D32, Traction motors: D77/78DC
Loco brake	Straight air
Train brakes	Air

Performance figures
Power output	1,500 hp (1,119 kW)

Career
Locale	when new: Mexico

HLCX 1524

The EMD SW1504 is a 1,500 hp (1,119 kW) diesel 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 passed to the variety of successor railroad operators in Mexico, some have been sold to leasing companies in the USA.

The SW1504 was fundamentally a SW1500 mounted on EMD's Blomberg trucks, instead of the Flexicoil trucks or switcher trucks available on the SW1500. The Blomberg truck, universally used on EMD's larger four-axle units, was larger than the Flexicoil truck and required a 2 ft (610 mm) increase in overall length. These locomotives were in many respects a transitory design between the SW1500 and EMD's later MP15DC.

The spotting clues are the Blomberg trucks and the ventilation slots in the large box on the long hood between the rear stack and the front of the cab.

References

Laundry, Mark. The Yard Limit: EMD SW1504. Retrieved on March 23, 2005.
Marre, Louis A. & Pinkepank, Jerry A. (1989). The Contemporary Diesel Spotter's Guide. Waukesha, WI: Kalmbach Books. ISBN 0-89024-088-4. LCCN 88083625. OCLC 19959644.
Trainweb.org. The Unofficial EMD Homepage. Retrieved on March 23, 2005.
McCall, S.A. EMD Switcher Dimensional Data. Retrieved on March 23, 2005.

Diesel-electric switcher locomotives

Alco	ALCO Boxcab ALCO 600 HH600 HH660 HH900 HH1000 S-1 S-2 S-3 S-4 S-5 S-6 T-6 SB-8/SSB-9

Baldwin	VO-660 DS-4-4-660 DS-4-4-750 S-8 RS-4-TC VO-1000 DS-4-4-1000 S-12

Fairbanks-Morse	H-10-44 H-12-44 H-12-44TS H-12-46

GE	60-ton boxcab 100-ton boxcab 600-hp centercab 1000-hp centercab DEY-2 EN-6 25-ton 35-ton 43-ton 44-ton 45-ton 50-ton 60-ton 65-ton 70-ton 80-ton 95-ton 100-ton 110-ton 125-ton 126-ton 128-ton 1800-hp transfer 2000-hp transfer U5B U6B

GM/EMD	SC, SW, NC, NC1, NC2, NW, NW1, NW1A, NW4, T NW2 NW3 NW5 TR1 SW1 SW7 SW8 SW9 SW600 SW900 SW1000 SW1001 SW1200 SW1500 SW1504 MP15DC MP15AC MP15T RS1325 GMD1

Lima-Hamilton	LS-750 LS-800 LS-1000 LS-1200

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EMD SW1504

See also

References