List of ALCO diesel locomotives

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

Boxcab locomotives

Model	Build date	Total produced	Wheel arrangement	Prime mover	Power output
60-ton	1924–1928	26	B-B	Ingersoll-Rand 10 in × 12 in (254 mm × 305 mm)	300 hp (220 kW)
100-ton	1925–1928	7	B-B	Ingersoll-Rand 10 × 12 (×2)	300 hp (220 kW) × 2
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	McIntosh & Seymour 9½ x 10½	300 hp (220 kW)

Switchers

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output
ALCO 300	—	1931–1938	9	B-B	M&S 6-330	300 hp (220 kW)
ALCO 600	—	1931	1	B-B	6-531	600 hp (450 kW)
HH600	—	1931–1939	76	B-B	6-531	600 hp (450 kW)
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)
S-2	E-1540	1940–1950	1465	B-B	6-539T	1,000 hp (750 kW)
S-3	E-1530A	1950–1953	137	B-B	6-539	660 hp (490 kW)
S-4	E-1540A	1949–1957	651	B-B	6-539T	1,000 hp (750 kW)
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)
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

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output
Rebel power cars	—	1935, 1937	3	2-B	6-531	600 hp (0.45 MW)
—	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
—	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)
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)
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

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output
RS-1	E-1641A	1941–1960	469	B-B	6-539T	1,000 hp (0.75 MW)
RS-2	E-1661, E-1661A, E-1661B	1946–1950	347	B-B	12-244	1,500 hp (1.12 MW)
RS-2	E-1661C	1949–1950	31	B-B	12-244	1,600 hp (1.19 MW)
RS-3	E-1662, E-1662A, E-1662B	1950–1956	1320	B-B	12-244	1,600 hp (1.19 MW)
RS-11	DL-701	1956–1961	351	B-B	12-251	1,800 hp (1.34 MW)
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)
RS-36	DL-701XAP	1962–1963	40	B-B	12-251	1,800 hp (1.34 MW)

Six-axle road switchers

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output
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	E-1646	1944–1945	100	C-C	6-539T	1,000 hp (0.75 MW)
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)
RSD-5	E-1664, E-1664A, E-1664B	1952–1955	204	C-C	12-244	1,600 hp (1.19 MW)
RSD-7	DL-600	1954	2	C-C	16-244	2,250 hp (1.68 MW)
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)
RSD-15	DL-600B	1956–1960	75	C-C	16-251B	2,400 hp (1.79 MW)

Century series

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
C415	DL-415	1966–1968	26	B-B	8-251F	1,500 hp (1.12 MW)
C420	DL-721A	1963–1968	131	B-B	12-251C	2,000 hp (1.49 MW)
C424	DL-640A	1963–1967	190	B-B	16-251B	2,400 hp (1.79 MW)
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)
C628	DL-628	1963–1968	186	C-C	16-251C	2,750 hp (2.05 MW)
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)
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

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)

Military locomotives

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)

Export locomotives

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output
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
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)
RSD-8	DL531A	1958–1970	317	C-C	6-251D	1,060 hp (790 kW)
	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)
	DL533			-
	DL534			-
RSD-39	DL535	1969–1978	186	C-C	6*251D	1,200 hp (890 kW)
Indian Railways YDM-4 RSD-30	DL535A	1961–1964	55 (#6020-#6049 and #6105-#6129)	C-C	6-251D	1,300 hp (0.97 MW)
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
	DL535M			-
	DL535S			A1A-A1A
	DL535T			-
RSD-36	DL536	1960–1964	39	C-C	6-251D	1,200 hp (890 kW)
Tunisian Railways 040-DK	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)
	DL539			-
RSD-16	DL540	1957–1959	130	C-C	12-251B	1,800 hp (1,340 kW)
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)
	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	1962-1965	18040 – 18079 (1962), 18112 – 18232 (1962 – 1963), 18245 – 18298 (1964 – 1965), 18337 – 18361 (1965)	C-C	16-251B	2,600 hp (1,940 kW)
	DL560D			-

Montreal Locomotive Works Export locomotives

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)
	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)
OSE class A-501	MX636	1974–1980	10	C-C	MLW 16-251E	3,600 hp (2,680 kW)
	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

Lamb, J. Parker (2007). Evolution of the American Diesel Locomotive. Railroads Past and Present. Bloomington, Indiana: Indiana University Press. ISBN 978-0-253-34863-0.
Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years: A Guide to Diesels Built Before 1972. Railroad Reference Series. Waukesha, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-258-2.
Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.
Schafer, Mike (1998). Vintage Diesel Locomotives. Enthusiast Color Series. Osceola, Wisconsin: MBI Publishing. ISBN 978-0-7603-0507-2.
Solomon, Brian (2000). The American Diesel Locomotive. Osceola, Wisconsin: MBI Publishing Company. ISBN 978-0-7603-0666-6.
Solomon, Brian (2009). Alco Locomotives. Minneapolis, MN, USA: Voyageur Press. ISBN 9780760333389.
Solomon, Brian (2010). Vintage Diesel Power. Minneapolis, Minnesota: MBI Publishing. ISBN 978-0-7603-3795-0.
Solomon, Brian (2012). North American Locomotives: A Railroad-by-Railroad Photohistory. Minneapolis, Minnesota: Voyageur Press. ISBN 978-0-7603-4370-8.

External links

ALCOWorld

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