| ALCO T-6 |
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| Type and origin |
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| Power type | Diesel-electric |
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| Builder | ALCO |
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| Model | T-6 (Specification DL440) |
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| Build date | March 1958 – January 1969 |
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| Total produced | 57 |
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| Performance figures |
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| Maximum speed | 60 mph (97 km/h) |
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| Power output | 1,000 hp (750 kW) |
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Tractive effort:
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| • Starting | 60,000 lbf (270 kN) |
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| • Continuous | 46,000 lbf (200 kN) |
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| Career |
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| Disposition | 17 in service on shortline railroads, 2 preserved, rest presumed scrapped |
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The Alco T6 (DL 440) is a diesel-electric switcher locomotive rated at 1,000 horsepower (750 kW), that rides on two-axle trucks, having a B-B wheel arrangement.
The 'T' stands for 'Transfer', meaning this locomotive is capable of faster transition and higher sustained speeds than the regular 'S' - type yard switcher series. A major difference underlying this shift is the use of the heavier GE 752 traction motors, as used on road locomotives, in place of the GE 731 traction motors used on nearly all Alco's preceding switchers. The 752 motors give the T-6 a very substantial increase in continuous tractive effort, which greatly improved its slow-speed lugging performance.
The T-6 was the last series of locomotives built by Alco. The last of which built in 1969. The same year that the company had left the locomotive business. That locomotive being Newburgh and South Shore #1017 which survives today in operation on the West Michigan Railroad.
