List of ALCO diesel locomotives

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

1 Boxcab locomotives
2 Switchers
3 Cab units
4 Four-axle roadswitchers
5 Six-axle roadswitchers
6 Century series
7 Diesel-hydraulic locomotives
8 Military locomotives
9 Export locomotives
10 References
11 See also
12 External links

[edit] Boxcab locomotives

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output
60-ton	1924–1928	26	B-B	Ingersol-Rand 10 × 12	300 hp
100-ton	1925–1928	7	B-B	Ingersol-Rand 10 × 12 (×2)	300 hp × 2
66-ton	1931	1	B-B	McIntosh & Seymour 9 1/2 x 10 1/2	300 hp

[edit] Switchers

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output
ALCO 300	1931-1938	9	B-B	M&S 6-330	300 hp
ALCO 600	1931	1	B-B	6-531	600 hp
HH600	1931–1939		B-B	6-531	600 hp
HH900	1937–1939		B-B	6-531T	900 hp
HH660	1939–40		B-B	6-538	660 hp
HH1000	1939–1940		B-B	6-538T	1,000 hp
S-1	1940–1950		B-B	6-539	660 hp
S-2	1940–1950		B-B	6-539T	1,000 hp
S-3	1950–1953		B-B	6-539	660 hp
S-4	1950–1961		B-B	6-539T	1,000 hp
DL420	1951	1	B-B	6-251	800 hp
S-5	1954	7	B-B	6-251A	800 hp
S-6	1955–1960	126	B-B	6-251B	900 hp
SB-8/SSB-9		2 pairs	B-B × 2	6-251B × 2	900 hp × 2
T-6	1958–1969	57	B-B	6-251B	1,000 hp

[edit] Cab units

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output
DL-103b	1939	1	A1A-A1A	6-538T	1,000 hp × 2
DL-105	1940	3	A1A-A1A	6-539T	1,000 hp × 2
DL-107	1940-1941	8	A1A-A1A	6-539T	1,000 hp × 2
DL-108	1941	3	A1A-A1A	6-539T × 2	1,000 hp × 2
DL-109	1941-1945	62	A1A-A1A	6-539T × 2	1,000 hp × 2
DL-110	1942	1	A1A-A1A	6-539T × 2	1,000 hp × 2
DL-202	1945	3	B-B	12-241	1,500 hp
FA-1			B-B	12-244	1,500–1,600 hp
FB-1			B-B	12-244	1,500–1,600 hp
FA-2			B-B	12-244	1,600 hp
FB-2			B-B	12-244	1,600 hp
PA-1		169	A1A-A1A	16-244	2,000 hp
PB-1		39	A1A-A1A	16-244	2,000 hp
PA-2		81	A1A-A1A	16-244	2,250 hp
PB-2		8	A1A-A1A	16-244	2,250 hp

[edit] Four-axle roadswitchers

Model designation	Total produced	AAR wheel arrangement	Prime mover	Power output
RS-1		B-B	6-539T	1,000 hp
RS-2		B-B	12-244	1,500–1,600 hp
RS-3		B-B	12-244	1,600 hp
RS-11		B-B	12-251	1,800 hp
RS-27	27	B-B	16-251	2,400 hp
RS-32		B-B	12-251
RS-36		B-B	12-251

[edit] Six-axle roadswitchers

Model designation	AAR wheel arrangement	Prime mover	Power output
RSC-1	A1A-A1A	6-539T	1,000 hp
RSD-1	C-C	6-539T	1,000 hp
RSC-2	A1A-A1A	12-244	1,500–1,600 hp
RSC-3	A1A-A1A	12-244	1,600 hp
RSD-4	C-C	12-244	1,600 hp
RSD-5	C-C	12-244	1,600 hp
RSD-7	C-C	16-244	2,400 hp
RSD-12	C-C	12-251	1,800 hp
RSD-15	C-C	16-251	2,400 hp

[edit] 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 designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output
C415		26	B-B	8-251	1,500 hp
C420		131	B-B	12-251	2,000 hp
C424		190	B-B	16-251	2,400 hp
C425		91	B-B	16-251	2,500 hp
C430		16	B-B	16-251	3,000 hp
C628	1963–68	186	C-C	16-251	2,750 hp
C630	1965–67	77	C-C	16-251	3,000 hp
C636	1967–68	34	C-C	16-251	3,600 hp
C855	1964	2 'A', 1 'B'	B-B+B-B	Dual 16-251	5,500 hp

[edit] Diesel-hydraulic locomotives

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output	Image
DH643	1964	3	C-C	Dual 12-251	4,300 hp

[edit] Military locomotives

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output	Image
MRS-1		83	C-C	12-244

[edit] Export locomotives

Model designation	Build date	Total produced	AAR wheel arrangement	Prime mover	Power output
DL500	1953	1	C-C	12-244D	1600
DL500A	1955-1956	18	-	12-244	1600
DL500B	1955-1962	58	C-C	12-251 and 12-251B	1600 and 1800
DL500B1			-
DL500C			C-C	251B12	1470
DL500CI			-
DL500CP			-
DL500D			-
DL500G			-
DL500S			-
DL503S			-
DL510			-
DL515			-
DL515I			-
DL521			-
DL522G			-
DL530			-
DL531			-
DL531A			-
DL531B			-
DL531G			-
DL532			-
DL532B			B-B	251B6	772 kW
DL533\|			-
DL534			-
DL535			-
DL535A			-
DL535B			-
DL535C			-
DL535E			-
DL535M			-
DL535S			-
DL535T			-
DL536			-
DL536B			-
DL537			C-C	251D6	993 kW
DL539			-
DL540			-
DL541			-
DL542			-
DL543			C-C	251B12	1470 kW
DL543A			-
DL543SPAP			-
DL544			-
DL550			-
DL550K			-
DL551			-
DL551B			-
DL560			-
DL560A			-
DL560B			-
DL560C			-
DL560D			-
MX615			-
MX620			-
MX624			-
MX626			-
MX627			-
MX636			-
MXS620			-