The Alco S5 (DL 421A) was a diesel-electric locomotive of the switcher type rated at 800 horsepower, that rode on two-axle trucks, having a B-B wheel arrangement.
References
| Diesel-electric locomotives built by ALCO
|
| Switchers: |
HH series, S-1, S-2, S-3, S-4, S-5, S-6, T-6, SSB-9
|
| RS series: |
RS-1, RS-2, RS-3, RS-11, RS-27, RS-32, RS-36
|
| RSC series: |
RSC-2, RSC-3
|
| RSD series: |
RSD-1, RSD-4, RSD-5, RSD-7, RSD-12, RSD-15
|
| Cab units: |
DL-103b, DL-105, DL-107, DL-109, DL-110, DL-203, FA, FB, PA, PB
|
| Century series: |
C415, C420, C424, C425, C430, C628, C630, C636, C855
|
| Diesel-hydraulics: |
DH643
|
