List of ALCO diesel locomotives

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American Locomotive Company (ALCO) produced a wide range of diesel-electric locomotives until it ceased manufacture in 1969.

Boxcab locomotives[edit]

Model Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
60-ton 1924–1928
26
B-B
Ingersoll-Rand 10 in × 12 in (254 mm × 305 mm) 300 hp (220 kW) 1926 AlcoGEIngersoll-Rand Boxcab Locomotive 11.jpg
100-ton 1925–1928
7
B-B
Ingersoll-Rand 10 × 12 (×2) 300 hp (220 kW) × 2 First Alco diesel boxcab in 1957.jpg
New York Central 1525 1928
1
B-B
Ingersoll-Rand 10 in × 12 in (254 mm × 305 mm)/batteries/3rd rail 300 hp (220 kW)
66-ton 1931
1
B-B
Macintosh and Seymour 9½ x 10½ 300 hp (220 kW)

Switchers[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
ALCO 300 1931–1938 9 B-B M&S 6-330 300 hp (220 kW) Alco 300.jpg
ALCO 600 1931 1 B-B 6-531 600 hp (450 kW) Alco 600.jpg
HH600 1931–1939 76 B-B 6-531 600 hp (450 kW)

PTM1004.jpg

HH900 1937–1939 21 B-B 6-531T 900 hp (670 kW)
HH660 1939–40 43 B-B 6-538 660 hp (490 kW)
HH1000 1939–1940 34 B-B 6-538T 1,000 hp (750 kW)
S-1 E-1530 1940–1950 546 B-B 6-539 660 hp (490 kW) MCRY 7 20041010.jpg
S-2 E-1540 1940–1950 1465 B-B 6-539T 1,000 hp (750 kW) TRHC7020.jpg
S-3 E-1530A 1950–1953 137 B-B 6-539 660 hp (490 kW)

S3-DieselElectricLocomotive-SRM.jpg

S-4 E-1540A 1949–1957 651 B-B 6-539T 1,000 hp (750 kW) GU 1001 S4.jpg
S-5 DL420 1951 1 B-B 6-251 800 hp (600 kW)
S-5 DL-421 1954 7 B-B 6-251A 800 hp (600 kW)
S-6 DL-430 (1st) 1955–1960 126 B-B 6-251B 900 hp (670 kW) Hugh llewelyn 1231 (5963970156).jpg
SB-8/SSB-9 DL-431/DL-461 1956 2 sets B-B+B-B 6-251B × 2 900 hp (670 kW) × 2
T-6 DL-440 1958–1969 57 B-B 6-251B 1,000 hp (750 kW)

Cab units[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
Rebel power cars 1935, 1937 3 2-B 6-531 600 hp (0.45 MW) The Rebel streamlined train.JPG
DL-103b 1939 1 A1A-A1A 6-538T × 2 1,000 hp (0.75 MW) × 2
DL-105 1940 3 A1A-A1A 6-539T × 2 1,000 hp (0.75 MW) × 2
DL-107 1940–1941 8 A1A-A1A 6-539T × 2 1,000 hp (0.75 MW) × 2
DL-108 1941 3 A1A-A1A 6-539T × 2 1,000 hp (0.75 MW) × 2
DL-109 1941–1945 62 A1A-A1A 6-539T × 2 1,000 hp (0.75 MW) × 2 Old Maude in 1958.jpg
DL-110 1942 1 A1A-A1A 6-539T × 2 1,000 hp (0.75 MW) × 2
DL-202 1945 2 B-B 12-241 1,500 hp (1.12 MW)
DL-203 1945 1 B-B 12-241 1,500 hp (1.12 MW)
FA-1 DL-204, DL206, DL-208, DL-208A, DL-208B 1946–1950 396 B-B 12-244A, B 1,500 hp (1.12 MW)
FA-1 DL-208C 1950 21 B-B 12-244C 1,600 hp (1.19 MW)
FB-1 DL205, DL-209, DL-209A, DL-209B 1946–1950 213 B-B 12-244A, B 1,500 hp (1.12 MW)
FB-1 DL-209C 1950 16 B-B 12-244C 1,600 hp (1.19 MW)
FA-2 DL-212, DL-212A 1950–1956 308 B-B 12-244D, G 1,600 hp (1.19 MW) MetroRail 600.jpg
FPA-2 DL-212, DL-212A 1950–1951 54 B-B 12-244D 1,600 hp (1.19 MW)
FB-2 DL-213, DL-213A 1950–1956 181 B-B 12-244D, G 1,600 hp (1.19 MW)
FPB-2 DL-213, DL-213A 1950–1956 25 B-B 12-244D 1,600 hp (1.19 MW)
PA-1 DL-304, DL-304A, DL-304B 1946–1949 169 A1A-A1A 16-244 2,000 hp (1.49 MW) Wiki-PAs.jpg
PB-1 DL-305, DL-305A, DL-305B 1946–1949 39 A1A-A1A 16-244 2,000 hp (1.49 MW)
PA-2 DL-304C, DL-304D 1950–1953 81 A1A-A1A 16-244 2,250 hp (1.68 MW)
PB-2 DL-305, DL-305D 1950–1953 8 A1A-A1A 16-244 2,250 hp (1.68 MW)

Four-axle road switchers[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
RS-1 E-1641A 1941–1960 469 B-B 6-539T 1,000 hp (0.75 MW) SARM5310.JPG
RS-2 E-1661, E-1661A, E-1661B 1946–1950 347 B-B 12-244 1,500 hp (1.12 MW) Santa Fe loco.jpg
RS-2 E-1661C 1949–1950 31 B-B 12-244 1,600 hp (1.19 MW) Santa Fe loco.jpg
RS-3 E-1662, E-1662A, E-1662B 1950–1956 1320 B-B 12-244 1,600 hp (1.19 MW) ALCO RS3.JPG
RS-11 DL-701 1956–1961 351 B-B 12-251 1,800 hp (1.34 MW) TPW 400 20050716 Illinois Railway Museum.JPG
RS-27 DL-640 1959–1962 27 B-B 16-251 2,400 hp (1.79 MW)
RS-32 DL-721 1961–1962 35 B-B 12-251 2,000 hp (1.49 MW) Alco RS-32 2035 Diamond Branch Delaware-Lackawanna Railroad in Scranton, Pennsylvania.jpg
RS-36 DL-701XAP 1962–1963 40 B-B 12-251 1,800 hp (1.34 MW) D&U D&H RS36 5017.jpg

Six-axle road switchers[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
RSC-1 1946 4 A1A-A1A 6-539T 1,000 hp (0.75 MW)
RSD-1 E-1641 1946 6 C-C 6-539T 1,000 hp (0.75 MW)
RSD-1 E-1645 1942-1943 44 C-C 6-539T 1,000 hp (0.75 MW) RSD-1.jpg
RSD-1 E-1646 1944–1945 100 C-C 6-539T 1,000 hp (0.75 MW) Diesel locomotive DA20-09 (5).jpg
RSC-2 E-1661, E-1661A, E-1661B 1946–1950 81 A1A-A1A 12-244 1,500 hp (1.12 MW)
RSC-2 E-1661C 1950 5 A1A-A1A 12-244 1,600 hp (1.19 MW)
RSC-3 E-1662, E-1662A, E-1662B 1950–1955 99 A1A-A1A 12-244 1,600 hp (1.19 MW)
RSD-4 E-1663, E-1663A, E-1663B 1951–1952 36 C-C 12-244 1,600 hp (1.19 MW) Kennecott Copper Company Locomotive 201 - 1.jpg
RSD-5 E-1664, E-1664A, E-1664B 1952–1955 204 C-C 12-244 1,600 hp (1.19 MW) CNW1689.jpg
RSD-7 DL-600 1954 2 C-C 16-244 2,250 hp (1.68 MW) ALCO RSD-7 1953.JPG
RSD-7 DL-600A 1955–1956 27 C-C 16-244 2,400 hp (1.79 MW)
RSD-12 DL-702 1956–1963 171 C-C 12-251B 1,800 hp (1.34 MW) ALCo RSD-12 (9194229140).jpg
RSD-15 DL-600B 1956–1960 75 C-C 16-251B 2,400 hp (1.79 MW) GBW 2407 at IRM.jpg

Century series[edit]

ALCO announced its "Century Series" of diesel locomotives in 1963 as a leap forward in power and reliability, an attempt to compete more aggressively with GM-EMD and GE in the marketplace.

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
C415 DL-415 1966–1968 26 B-B 8-251F 1,500 hp (1.12 MW) RI424.png
C420 DL-721A 1963–1968 131 B-B 12-251C 2,000 hp (1.49 MW) A&M RR.JPG
C424 DL-640A 1963–1967 190 B-B 16-251B 2,400 hp (1.79 MW) CVSR4241.jpg
C425 DL-640B 1964–1966 91 B-B 16-251C 2,500 hp (1.86 MW)
C430 DL-430 (2nd) 1967–1968 16 B-B 16-251E 3,000 hp (2.24 MW) Green Bay and Western Railroad Alco C430 No 315 Rear.jpg
C628 DL-628 1963–1968 186 C-C 16-251C 2,750 hp (2.05 MW) Hamersley Iron 2000 locomotive, Dampier.jpg
C630 DL-630 1965–1968 133 C-C 16-251E 3,000 hp (2.24 MW)
C636 DL-636 1967–1968 34 C-C 16-251E 3,600 hp (2.68 MW) Rprx78rpnj.jpg
C855 DL-855 1964 2 B-B+B-B Dual 16-251 5,500 hp (4.10 MW)
C855B DL-856 1964 1 B-B+B-B Dual 16-251 5,500 hp (4.10 MW)

Diesel-hydraulic locomotives[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
DH643 DH-400 1964 3 C-C Dual 12-251C 4,300 hp (3.21 MW) Southern Pacific -9152.jpg

Military locomotives[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
MRS-1 or RSX-4 E-1670 1953–1954 83 C-C 12-244D 1,600 hp (1.19 MW) BayCoastRR2085 ex-ESHR exx-USAX.JPG

Export locomotives[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
FCA-3 DL212 1951-1953 23 A1A-A1A 12-244D 1,600 hp (1.19 MW)
FD-3 DL500 1953 1 C-C 12-244D 1,600 hp (1.19 MW)
FD-3 DL500A 1955 2 C-C 12-244D 1,600 hp (1.19 MW)
FPD-5 DL500A 1955–1956 16 C-C 12-244 1,600 hp (1.19 MW)
RENFE Class 316 DL500A 1955 17 C-C 316-017 en Vitoria 1.JPG
FD-6 DL500B 1955–1962 58 C-C 12-251
12-251B
1,600 hp (1.19 MW)
1,800 hp (1.34 MW)
DL500B1 -
SEK class A-301 DL500C 1962 10 C-C 12-251B 1,800 hp (1.34 MW)
FD-7 DL500CI C-C 12-251B 1,800 hp (1,340 kW)
DL500CP -
FD-9 DL500D C-C 12-251b 1,800 hp (1,340 kW)
FP-9 DL500G C-C 12-251B 1,800 hp (1,340 kW)
DL500S -
DL503S -
DL510 -
DL515 -
DL515I -
DL521 -
DL522G -
DL530 -
RSD-8 (NSW 48) DL531 C-C 6-251D 1,060 hp (790 kW) Arhs 4876 lyndhurst.jpg
RSD-8 DL531A 1958–1970 317 C-C 6-251D 1,060 hp (790 kW) Trem Intra Metro01.JPG
DL531B -
DL531G -
RS-8 DL532 1959–1969 20 B-B 6-251D 1,035 hp (770 kW)
SEK class A-201 DL532B 1961–1962 B-B 6-251D 1,035 hp (0.77 MW) 20070611-AIR-A204-0002.jpg
DL533 -
DL534 -
RSD-39 DL535 1969–1978 186 C-C 6*251D 1,200 hp (890 kW) Alco en via 3º.JPG
Indian Railways YDM4 DL535A 1961–1964 C-C 1,300 hp (0.97 MW) YDM4-6669 Jaipur Junction, 2008 (3).JPG
ENAFER RSD-35 DL535B 1974 5 C-C 1,200 hp (0.89 MW)
DL535C -
DL535E DL535E 1969
completed by MLW
7 C-C 6-251D White Pass Diesel Locomotive.jpg
DL535M -
DL535S A1A-A1A
DL535T -
RSD-36 DL536 1960–1964 39 C-C 6-251D 1,200 hp (890 kW)
DL536B -
RSD-37 DL537 1965–1978 40 C-C 6-251D 1,200 hp (890 kW)
SEK class A-9101 DL537 1965 C-C 6-251D 993 kilowatts (1,332 hp) 20070420-Korinthos-9106.JPG
DL539 -
RSD-16 DL540 1957–1959 130 C-C 12-251B 1,800 hp (1,340 kW) Alco RSD-16 NCA Baradero.JPG
RSD-16 DL541 1960–1966 39 C-C 12-251B 18,300 hp (13,650 kW)
DL542 -
SEK class A-321 DL543 1961–1970 140 C-C 12-251C 1,470 kilowatts (1,971 hp) 20071104-air-a326-0018.jpg
DL543A -
DL543SPAP -
DL544 -
DL550 -
DL550K -
DL551 -
DL551B -
DL-560 DL560 1962–1967 287 C-C 12-251B 2,600 hp (1,940 kW)
DL560A -
DL560B -
Indian Railways WDM-2/ALCO RSD-29 DL560C - WDM 2.jpg
DL560D -

Montreal Locomotive Works Export locomotives[edit]

Model Specification Build date Total
produced
Wheel
arrangement
Prime mover Power output Image
MX615 1972–1979 74 C-C-1 MLW 8-251A 1,200 hp (890 kW)
MX620 1973–1980 145 C-C MLW 12-251C 2,000 hp (1,490 kW) EMAQ MX620 6156 FCA.jpg
MX624 1975–1983 69 C-C MLW 12-251E 2,400 hp (1,790 kW)
MX626 1972–1982 32 C-C MLW 12-251E 2,400 hp (1,790 kW)
OSE class A-451 MX627 1972–1978 33 C-C MLW 12-251C 2,750 hp (2,050 kW) 20070504-air-a453.jpg
OSE class A-501 MX636 1974–1980 10 C-C MLW 16-251E 3,600 hp (2,680 kW) 20071228-air-a504.jpg
MXS620 1973–1982 100 C-C MLW 12-251E 2,000 hp (1,490 kW) Double End Cab Units
MXS624 1973–1983 33 C-C MLW 16-251E 2,400 hp (1,790 kW) Double End Cab Units
MXS627 1978–1980 10 C-C MLW 16-251C 2,750 hp (2,050 kW) Double End Cab Units
MXS630 1978–1982 33 C-C MLW 16-251E 3,000 hp (2,240 kW) Double End Cab Units

References[edit]

  • Lamb, J. Parker (2007). Evolution of the American Diesel Locomotive. Railroads Past and Present. Bloomington, IN, USA: Indiana University Press. ISBN 9780253348630. 
  • Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years: A Guide to Diesels Built Before 1972. Railroad Reference Series (Book 10). Waukesha, WI, USA: Kalmbach Publishing. ISBN 0890242585. 
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. ISBN 0-89024-026-4. 
  • Schafer, Mike (1998). Vintage Diesel Locomotives. Enthusiast Color Series. Osceola, WI, USA: MBI Publishing. ISBN 0760305072. 
  • Solomon, Brian (2000). The American Diesel Locomotive. Osceola, WI, USA: MBI Publishing. ISBN 0760306664. 
  • Solomon, Brian (2009). Alco Locomotives. Minneapolis, MN, USA: Voyageur Press. ISBN 9780760333389. 
  • Solomon, Brian (2010). Vintage Diesel Power. Minneapolis, MN, USA: MBI Publishing. ISBN 9780760337950. 
  • Solomon, Brian (2012). North American Locomotives: A Railroad-by-Railroad Photohistory. Minneapolis, MN, USA: Voyageur Press. ISBN 9780760343708. 

External links[edit]