| GMD GMDH-3 | |
| Powertype: | Diesel-hydraulic |
| Builder: | General Motors Diesel |
| Serialnumber: | A1813 |
| Buildmodel: | GMDH-3 |
| Builddate: | January 1960 |
| Totalproduction: | 1 |
| Aarwheels: | C |
| Whytetype: | 0-6-0 |
| Uicclass: | C |
| Length: | 28feet |
| Width: | 8feet |
| Height: | 11feet |
| Weightondrivers: | 75000abbr=inNaNabbr=in |
| Locoweight: | 75000abbr=inNaNabbr=in 37.5ST |
| Fuelcap: | 330usgal |
| Lubecap: | 7.8usgal engine, 25.2usgal transmission, 6usgal gearboxes |
| Coolantcap: | 24usgal |
| Sandcap: | 14cuft |
| Primemover: | Detroit Diesel 8V-71 |
| Cylindercount: | V8 |
| Coupling: | AAR Type E |
| Poweroutput: | 2750NaN0 |
| Transmission: | Hydraulic
|
The GMD GMDH-3 was an experimental diesel-hydraulic switching locomotive built in January 1960 by General Motors Diesel of Canada. Only one example was built, with GMD serial number A1813.[1] The locomotive was essentially the GMDH-1 design but with only a single hood, a single engine and an end cab, mounted on a six-wheel chassis.
After being built in January 1960, the locomotive served as a demonstrator for GMD, bearing number #275, between 1960 and 1962, during which it spent a period in Egypt, but no sales resulted.[2] The locomotive was sold in 1963 to McKinnon Industries of St. Catharines, Ontario as their plant switcher, #2128. After nearly 30 years of service, it was sold in 1992 to the South Simcoe Railway, a heritage museum railway, in Tottenham, Ontario, but in 1995 it was declared surplus to requirements by the railway's directors.
After a fund-raising effort, the Southern Michigan Railroad Society purchased the locomotive in 1996, where it remains in operable condition . [3] As of June 2015, GMDH-3 had been repainted in two-tone blue, and is still parked in Clinton, Michigan awaiting funds for restoration.