EMD SD9

The EMD SD9 (also known as the "Cadillac"[1]) is a model of diesel locomotive built by General Motors Electro-Motive Division between January 1954 and June 1959. An EMD 567C 16-cylinder engine generated 1,750 horsepower (1.30 MW). Externally similar to its predecessor, the SD7, the SD9 was built with the improved and much more maintainable 567C engine.

EMD SD9
Burlington Northern SD9 #6234.
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division (EMD)
ModelSD9
Build dateJanuary 1954 – June 1959
Total produced515
Specifications
Configuration:
​
 • AARC-C
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter40 in (1,016 mm)
Wheelbase48 ft 7 in (14.8 m)
Length60 ft 8.5 in (18.5 m)
Fuel capacity1,200 or 2,400 US gal (4,500 or 9,100 L; 1,000 or 2,000 imp gal)
Lubricant cap.200 US gal (757 L)
Sandbox cap.50 cu ft (1.4 m3)
Prime moverEMD 16-567C
Engine typeV16 diesel
BoilerVapor-Clarkson Steam Boiler OK4625
Cylinders16
Performance figures
Power output1,750 hp (1.30 MW)
Career
DispositionMany have been rebuilt, and are still in service.

Four hundred and seventy-one SD9s were built for American railroads, while a further 44 were produced for export.

Many SD9s both high and short hood can still be found in service today on shortline railroads and industrial operators. Although most Class 1 roads stopped using these locomotives by the 1970s and 1980s, some remain in rebuilt form on some major Class I railroads, as switcher locomotives.

History

The SD9 was the second model of EMD's SD (special duty) line of locomotives, following the SD7. Just as the SD7 was a lengthened GP7 with two additional axles, the SD9 was a corresponding modification of the GP9. The additional axles in SD series locomotives provide more tractive effort and more even distribution of locomotive weight compared to the four axle GP series locomotives.[2]

SD9s can be distinguished from the similar looking SD7s by observing the position of the classification lights on the ends of the locomotive, above the number board. The SD9's classification lights are on a small pod, canted outward, while the SD7's classification lights are closer to the centerline and flush with the hood.[3]

The last phase of construction had a carbody similar to the SD18 and SD24, and used two 48-inch (1,219 mm) cooling fans instead of four 36-inch (914 mm) cooling fans.

EMD ended SD9 production in June 1959. It was succeeded by the SD18 which began production in 1960.

Variants

SD9s

EMD produced a lightweight variant of the SD9, named the SD9s. This locomotive had its weight reduced for service on lighter tracks with modifications such as a smaller fuel tank.[3]

SD9E

Between August 1970 and March 1980, the Southern Pacific Transportation Company had rebuilt 144 of their units into EMD SD9E diesel locomotives under their own rebuild program known as the General Rehabilitation and Improvement Program (G.R.I.P) and renumbered 142 of their rebuilt units as 4300-4441 and two additional rebuilt units being renumbered as 4450 and 4451, as well as reclassifying their 142 units as EF618E-1 and classified their two units #4450 and #4451 as EF618E-2, which had left six other SD9 locomotives un-rebuilt.[4][5]

SD9m
N&W SD9m #2349

The SD9m was a rebuild from SD7s and SD9s mostly by Norfolk Southern Railway. NS rebuilt a total of ten units and used them in service between 1989 and 2010.[6]

Original buyers
RailroadQuantityRoad numbersNotes
Electro-Motive Division (demonstrator) 1 5591 to Duluth, Missabe and Iron Range 110
Atlanta and St. Andrews Bay Railroad 3 503–505
Baltimore and Ohio Railroad 10 765–774
Chicago, Burlington and Quincy Railroad 80 325–374, 430–459 300s had steam generators. To Burlington Northern 6127-6206
Chicago, Burlington and Quincy Railroad (C&S) 23 820–842 To Burlington Northern 6215-6237

6234 preserved

Central of Georgia Railway 6 202–207
Chicago and Illinois Midland Railroad 5 50–54
Chicago and North Western Railway 14 1701–1710, 1721–1724 Fitted for Chicago commuter service
Chicago, Milwaukee, St. Paul and Pacific Railroad 14 2224–2237 Renumbered 530-543
Chile Exploration 5 901–905 Track gauge?
Duluth, Missabe and Iron Range Railroad 73 101–109, 111–174 129–130 had steam generators
Denver and Rio Grande Western Railroad 10 5305–5314
Elgin, Joliet and Eastern Railway 3 600–602
Great Northern Railway 27 573–599 To Burlington Northern 6100-6126
Korail (Korea) 29 101–129 Later renumbered 5001-5029
New York, Chicago and St. Louis Railroad (“Nickel Plate Road”) 20 340–359
Orinoco Mining (Venezuela) 10 1011–1020
Pennsylvania Railroad 25 7600–7624
Reserve Mining 6 1220–1225 To Escanaba and Lake Superior Railroad
Soo Line (Wisconsin Central Railroad) 1 2381
Southern Pacific Company 150 5340–5444, 5449–5493 5340–5391 had steam generators
Total515

Preservation
PNWR 1852 in Albany, Oregon
AERC 5399 in Albany, Oregon

Some SD9 locomotives can be found in museums and on tourist lines, and at least two are in service on a working railroad.

  • BNSF #1550 is preserved at the Lake Superior Railroad Museum, having been donated by BNSF in 2022.[7] It is classified as an SD9-3.
  • BNSF #1552 is stored on the now-defunct Blackwell Northern Gateway Railroad in Oklahoma, intended for preservation. It is classified as an SD9-3.
  • BNSF #6125 (ex-GN #598) is preserved at the Inland Northwest Rail Museum at Reardan, Washington, having been donated in 2020. It is being restored into its original Great Northern appearance.
  • Burlington Northern #6139 is preserved and operational on the Oregon Coast Scenic Railroad.
  • Burlington Northern #6234 (ex-Colorado & Southern #839) is preserved and operational at the Minnesota Transportation Museum. It now operates on the museum's Osceola and St Croix Valley Railway. #6234 is an example of the last variation of SD9 locomotives produced, which used the SD18 carbody.
  • Great Northern #599 is preserved by the Inland Northwest Rail Museum in Reardan, Washington. It will undergo a cosmetic restoration, with mechanical parts used for the restoration of #598. [8]
  • KORAIL 5025 is only preserved SD9 in Korea, plinthed in front of Daejeon MPD, along single G12 4102. Both engines worked for construction of KTX Gyeongbu section as departmental vehicles upon retirement of KORAIL.
  • Milwaukee Road #532 is preserved and operational at the Whitewater Valley Railroad.[9]
  • Nevada Northern Railway #204 (ex-SP #4426) is preserved and operational at the Nevada Northern Railway Museum in Ely, Nevada.
  • Nickel Plate Road #358 is preserved at the Fort Wayne Railroad Historical Society. It has been restored into its original appearance.[10]
  • Norfolk and Western #2349 (ex-NKP #349) is preserved at the Mad River & Nickel Plate Railroad Museum. It was donated to the museum in December 2010 by Norfolk Southern.
  • Portland and Western Railroad #1852 is stored in Albany, Oregon. While it was sold to Dieselmotive Inc/BUGX in 2023 for preservation, the February 2024 shutdown of the Blackwell Northern Gateway Railroad has led to #1852 remaining stored on the P&W for the time being.
  • Portland and Western Railroad #1854 is stored in Albany, Oregon. It was retired in February 2024.
  • Southern Pacific #4404 is preserved on the Pend Oreille Valley Railroad in Usk, Washington.
  • Southern Pacific #5399 is preserved on the Albany & Eastern Railroad (AERC). Restored to SP's "Black Widow" paint scheme, it is used for both freight and passenger service.
  • Southern Pacific #5472 is preserved and operational on the Niles Canyon Railway

While not preserved in a museum, several SD9s are known to remain in revenue freight service as of March 2024.
  • Black River & Western Railroad #9581 (ex-Central of Georgia) is used by Kinder-Morgan Newport News for yard switching.
  • The Columbia Basin Railroad In Eastern Washington State owns 5 ex-BNSF and Montana Rail Link SD9s that are actively used in both road and switching service.
  • Dakota Southern Railway rosters an SD9E, #4427.[11] They previously rostered an SD9, #506, prior to being scrapped in 2022.
  • DBGX #6129 is used as a switcher at Kappa Grain in Benkelman, Nebraska, as of May 2023. It is painted in BNSF's "Heritage I" paint scheme.
  • Elgin, Joliet, and Eastern #612 is used as a switcher at various CHS Inc. facilities in North Dakota.
  • Escanaba and Lake Superior Railroad #1223 is used in local service around Escanaba, Michigan.
  • I&M Rail Link #611 is a switcher at a grain elevator in Highmore, South Dakota.[12]
  • I&M Rail Link #612 is a switcher at a grain elevator in Lexington, Nebraska.[13]
  • JDHX #50 (ex-NS) is a switcher at a JD Heiskell facility in Pixley, California.
  • Sierra Grain #3 (ex-NS) is a switcher at a grain elevator in Hughson, California.[14]

See also
  • EMD SD9E

References
  1. Trzoniec, Stanley W. (2015). Vintage & Modern Diesel Locomotives: Prime Movers of America. Voyageur Press. p. 16. ISBN 978-0-7603-4840-6.
  2. Schafer, Mike (1998). Vintage diesel locomotives. Osceola, WI: Motorbooks International. pp. 36–37. ISBN 0-7603-0507-2. OCLC 38738930.
  3. Marre, Louis A. (1995). Diesel locomotives : the first 50 years : a guide to diesels built before 1972. Waukesha, WI: Kalmbach Pub. Co. pp. 66–67. ISBN 0-89024-258-5. OCLC 34531120.
  4. Withers (1996), p. 36
  5. "SP Rebuild Programs". utahrails.net. Retrieved 2023-09-30.
  6. Bachand, Jean-Denis. "EMD SD9". The Diesel Shop. Archived from the original on 2022-03-31. Retrieved 18 July 2021.
  7. "BNSF Donates SD9 to Lake Superior Railroad Museum". 20 April 2022.
  8. Franz, Justin (2023-02-15). "Inland Northwest Rail Museum Acquires Two Rare Diesels". Railfan & Railroad Magazine. Retrieved 2024-03-09.
  9. "Whitewater Valley Railroad - MILW 532". Archived from the original on 2011-07-21.
  10. Vantuono, William C. (2023-07-11). "NKP 358 Restoration Nears Finish Line - Railway Age". Retrieved 2024-05-05.
  11. Presented by Spencer Christian (2009). "Dakota Southern Railway". Tracks Ahead. Episode 707. Milwaukee, Wisconsin. PBS. WMVS/Milwaukee PBS. Archived from the original on 2008-11-21.
  12. "IMRL 611". www.rrpicturearchives.net. Retrieved 2024-03-09.
  13. "IMRL 612". www.rrpicturearchives.net. Retrieved 2024-03-09.
  14. "RailPictures.Net Photo: 3 Sierra Grain Terminal EMD SD9 at Hughson, California by Chuck Phillips". www.railpictures.net. Retrieved 2024-03-09.

Further reading
  • Withers, Paul K. (1996). Diesel Era November/December 1996, Vol 7 No.6. Withers Publishing.
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.
  • Sarberenyi, Robert. EMD SD9 Original Owners. Retrieved on August 27, 2006
  • Komanesky, John. Preserved EMD Locomotives. Retrieved on May 18, 2009
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