The Alco S-6 (specification DL 430) was a diesel–electric switcher locomotive constructed by ALCO of Schenectady, New York; a total of 126 locomotives were built between May 1955 and December 1960. The S-6 was an improved version of the earlier S-5 .

2024年12月22日 · The Alco S6 (designed by the company as its DL430) was quite similar to all of its previous siblings, and as aforementioned was the successor to Alco's S5 design. The S5 was the first switcher to employ Alco's very own prime mover, the model 251A, which was capable of producing 800 horsepower via 6 cylinders.

The Alco S-6 (specification DL 430) was a diesel-electric switcher locomotive constructed by ALCO of Schenectady, New York; a total of 126 locomotives were built between May 1955 and December 1960. The S-6 was an improved version of the earlier S-5.

Alco S-5, S-6 & SSB-9 Production Rosters; Revised: 10 April 2019: Info from: John Komanesky: Original owner Road Numbers Qty. Bldr Numbers Bldr Dates; Alco S-5

The Alco S6 was a diesel-electric switching locomotive, an updated version of the earlier S-5 model. A total of 126 were built at Alco's Schenectady, New York plant between 1955 and 1960. They were powered by a four-stroke diesel engine that gave them a maximum output of 900 horsepower and a top speed of 60 m.p.h.

Alco Reference #1 by Bob Liljestrand Brotherhood of Locomotive Firemen and Enginemen Magazine, October 1953

Note(s) Occasionally four GE287 traction motors, from trade-in units, would be installed rather than GE731s. Options: Dynamic Brakes Dynamic Brakes Air Signal Lines Hump Control Stanley Heater; Reference Sources: Alco Design Data Alco Reference #1 by Bob Liljestrand Brotherhood of Locomotive Firemen and Enginemen Magazine, October 1953

To replace inefficient steam switchers, ALCO introduced the S series as a successor to the HH series in 1940. The new engine in these locomotives was now marketed under the ALCO brand, while the earlier switchers had engines named after …

Between 1955 and 1956 Espee receieved 70 Alco S-6 switchers. Two distinct varieties were delivered, #1033-1090 (later #1200-1257) were used as switcher, transfer and branchline units if photo captions are anything to go by.

I am looking for manuals for the controls and electrical system of the ALCO DL535E and also for their ALCO 251D 6-cyl engine. These locomotives were built in 1981 for the White Pass & Yukon as 1500HP (yes I said 1500 not 1200) road switchers in the #111-#114 series.