EMD SD40

EMD SD40
BNSF 6367, at Commerce, California, October 2006
Specifications
Power type	Diesel-electric
Builder	GM Electro-Motive Division (EMD) General Motors Diesel (GMD)
Model	SD40
Build date	January 1966 – August 1972
Total produced	1,268
AAR wheel arr.	C-C
Gauge	4 ft 8 1⁄2 in (1,435 mm) 5 ft 3 in (1,600 mm), Brazil
Driver diameter	40 in (1,016 mm) diameter
Length	65 ft 8 in (20.02 m) over the coupler pulling faces
Width	10 ft 0 in (3.05 m)
Height	15 ft 5 1⁄4 in (4.71 m)
Locomotive weight	360,000 lb (160,000 kg)
Fuel capacity	3,200 US gal (12,000 l; 2,700 imp gal)
Lubricant capacity	243 US gal (920 l; 202 imp gal)
Coolant capacity	295 US gal (1,120 l; 246 imp gal)
Sandbox capacity	56 cu ft (1.6 m3)
Prime mover	EMD 16-645-E3
Aspiration	turbocharged
Alternator	main : AR-10 auxiliary : D14
Generator	(?)
Traction motors	D-77
Cylinders	V16
Top speed	83 mph (134 km/h)
Power output	3,000 hp (2,240 kW)
Locomotive brake	Independent air\ optional: dynamic brakes
Train brakes	Air, schedule 26-L
Career
Locale	North America South America Africa

The EMD SD40 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972.

GMD SD40 KCSM 3029 in Caltzonzin Station

Design

Like its predecessor in EMD's catalog, the SD35, the SD40 is a high-horsepower, six-motor freight locomotive.

In 1966, EMD updated its locomotive catalog with entirely new models, all powered by the new 645 diesel engine. These included six-axle models SD38, SDP40 and SD45, in addition to the SD40. All shared standardized components, including the frame, cab, generator, trucks, traction motors, and air brakes. The primary difference was the power output: SD38 = 2,000 hp (1,490 kW) from a non-turbocharged V16, SD40 = 3,000 hp (2,240 kW) from a turbocharged V16, and SD45 = 3,600 hp (2,680 kW) from a turbocharged V20.

Original Owners

856 examples of this locomotive model were built for American railroads, 330 were built for Canadian railroads, 72 were built for Mexican railroads, 6 were built for the Guinea-Boke Project, and 4 SD40Ms riding on 5 ft 3 in (1,600 mm) gauge trucks were exported to Brazil.

Built by EMD at McCook, Illinois

Built by GMD at London, Ontario

Mexican SD40's Built by EMD at McCook, Illinois or GMD at London, Ontario

Phases are as listed by Robert Sarberenyi. ^{[citation needed]}

Derivatives and Experimental

GTW/CN #5945, a former GMD-built CN SD40, rebuilt to SD40-3 standards.

Last Mountain Railway SD40-3 at Aylesbury, Saskatchewan

The SD40 was succeeded by an upgraded Dash 2 version called the SD40-2. The very first test bed SD40, EMD 434, constructed on an SD35 frame in July 1964 was in active service until retired by Canadian National Railway in March 2009 and donated to the Monticello Railway Museum in July 2009, albeit having been upgraded to an "SD40-2R", as Illinois Central 6071. 18 customized SD40s were built for the Illinois Central Railroad as model SD40A, using the longer SDP45 frame, which allowed for a larger 5000 gallon fuel tank.

The SD40E is an SD50 rebuilt by the Norfolk Southern Railway and derated to 3000 HP (equivalent to an SD40-2).

A common product of rebuilding SD40s, and sometimes SD40-2s, is an SD40-3. The major addition denotes that the rebuilt unit or units as an SD40-3 is the addition of a micro-processor, and sometimes other modern components. The usual reasons for installing a micro-processor are improved traction control, and better fuel economy (via better injection control). Also, electronic control over braking systems (independent and automatic).

Versions of the SD40 modified for the Australian loading gauge were sold to WAGR and Victorian Railways as their L and C classes respectively.

SD40-Series Production Timeline

See also

• List of GM-EMD locomotives
• List of GMD Locomotives

References

• Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. ISBN 0-89024-026-4. 
• Sarberenyi, Robert. EMD SD40, SD40A, and SDP40 Original Owners. Retrieved on December 19, 2009
• Eck, H. C., The Modern Locomotive Handbook, 1977
• Service Department (1966). SD40 - SDP40 Operator's Manual. La Grange, IL: Electro-Motive Division of General Motors Corporation