EMD SD40 Diesel-Electric Locomotive
The EMD SD40 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972.
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, SD40, SDP40 and SD45. 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.
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
SD40's Built by EMD at McCook, Illinois or GMD at London, Ontario for Import
Built: 4/67 at McCook, IL
Built: 5/68 at McCook, IL
Built: 3/68 at McCook, IL
Built: 12/71 at McCook, IL
Built: 8/72 at McCook, IL
Built: 1/72 at London, Ontario
Derivatives and Experimental
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.
Versions of the SD40 modified for the Australian loading gauge were sold to WAGR and Victorian Railways as their L and C classes respectively.
The SD40 was succeeded by an upgraded Dash 2 version called the SD40-2.
After having been succeeded by the more modern SD40-2, a large proportion of SD40 have been upgraded with more modern equipments. The main difference between rebuilt SD40 and genuine SD40-2 is that the latter uses a longer frame and has longer front and rear porches while the rebuilt SD40 have a shorter frame.
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 microprocessor, and sometimes other modern components. The usual reasons for installing a microprocessor are improved traction control, and better fuel economy (via better injection control). Also, electronic control over braking systems (independent and automatic). This may include some SD39, SD45 and SD45-2 rebuilt to SD40-2 standards.
The SD40R is a rebuild of all the Southern Pacific's SD40 between 1980 and 1981. 30 SD40 have been rebuilt as SD40M-2 by Morrison Knudsen for Southern Pacific alongside 97 SD45 and 6 SDP45. The SD40-2XR designates 15 SD40 and a SDP40 rebuilt to Dash-2 standards for Montana Rail Link. The SD40E is an SD50 rebuilt by the Norfolk Southern Railway and derated to 3000 HP (equivalent to an SD40-2).
BNSF SD40 No. 6308 (built 1966 for ATSF) was gifted by the railroad to the Walt Disney Hometown Museum in Marceline, Missouri on October 30, 2017.
CP SD40 No. 5500 is preserved at the Revelstoke Railway Museum of Revelstoke, BC. It was CP's first SD40, built in 1966 at GMD's London plant and was retired in 2001. The unit was donated to the museum in 2007. Plans are being made to restore the locomotive to its original look as it was when ordered, including a repaint into its original grey/tuscan red paint scheme, known as the Canadian Pacific "Script".
CN SD40 No. 5232 (built November 1971) has been purchased by The Vintage Locomotive Society on January 10, 2015, from Cando Contracting and the Central Manitoba Railway. It is being used for revenue service by Prairie Rail Solutions, a wholly owned subsidiary of the Society. The unit has been repainted completely black, with Prairie Rail Solutions lettering and logos.
IC SD40-2R No. 6071, the first SD40 built, is preserved at the Monticello Railway Museum in Monticello, Illinois. It was originally the demonstrator for EMD, having the number No. 434. It was sold to the Gulf Mobile & Ohio and it became GM&O No. 950. The GM&O was later merged into the Illinois Central Railroad and became Illinois Central Gulf No. 6071, then later rebuilt into an SD40-2R for the IC. It was donated March 11, 2009. The engine is fully functional, however it needs new traction motors if it were to operate again.
In mid December, 2014, it was revealed that Norfolk Southern had set aside two SD40 units, that were retired in 2007, for preservation:
NS SD40 No. 1580, built as Norfolk & Western No. 1580, the first SD40 of the N&W. As of August 3, 2016, the locomotive was being worked on at the Juniata Shops in Altoona for eventual service & preservation.
NS SD40 No. 3170, built as Southern No. 3170, the first SD40 of the SOU. It was restored to operating condition at the Juniata Shops in Altoona, Pennsylvania, and then sent to the NS Paint shops at the Debutts Yard in Chattanooga, Tennessee, where it made its public debut February 27, 2015. It operated on the NS Piedmont Division. On May 18, 2016, it was donated to the Tennessee Valley Railroad Museum by Norfolk Southern.
EMD SD40 Overview
Type and origin
Power type: Diesel-electric
Builder: GM Electro-Motive Division (EMD), General Motors Diesel (GMD)
Build date: January 1966 – August 1972
Total produced: 1,268
• AAR C-C
Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge, 5 ft 3 in (1,600 mm), Brazil
Wheel 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
Engine type: V16 diesel
Alternator, main: AR-10
Alternator, auxiliary: D14
Traction motors: D-77
Locomotive brake: Independent air / optional: dynamic brakes
Train brakes: Air, schedule 26-L
Maximum speed: 83 mph (134 km/h)
Power output: 3,000 hp (2,240 kW)
Locales: North America, South America, Africa
Classic Streamliners - TRAINCYCLOPEDIA
Former CN SD40, CCGX 5232, Working on the Central Manitoba Railway in Winnipeg, Manitoba, September 20, 2014.
By Taylorover9002 - Taking a picture., CC BY-SA 4.0, https://en.wikipedia.org/w/index.php?curid=52958702
Text: wikipedia.org. Images: Public Domain; http://www.commons.wikimedia.org (unless otherwise specified) and 17 U.S. Code § 107 fair use. References: Lewis, Robert G. The Handbook of American Railroads. New York: Simmons-Boardman Publishing Corporation, 1951, 2nd Edition 1956. Site Map Contact webmaster HERE.
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