Samiksha Jaiswal (Editor)

ALCO DL420

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Power type
  
Diesel-electric

Model
  
S-5

Power output
  
800 hp (600 kW)

Builder
  
ALCO

AAR wheel arr.
  
B-B

Gauge
  
4 ft 8 ⁄2 in (1,435 mm)

The ALCO DL420 was the prototype ALCO S-5 switcher diesel-electric locomotive.

It was built in August, 1951 using an early six-cylinder 251 engine rated at 800 horsepower (600 kW) and RS-3 subassemblies in its construction. It rode on two-axle trucks, having a B-B wheel arrangement, and was the first ALCO switcher with a front radiator opening. This one-of-a-kind unit spent its time at the Niskayuna, test facility and then at Schenectady as a shop switcher (#6). The unit was scrapped in the late 1950s.

References

ALCO DL420 Wikipedia