| GE C40-8M | |
| Powertype: | Diesel-electric |
| Builder: | GE Transportation Systems |
| Buildmodel: | C40-8M |
| Builddate: | March 1990 - March 1994 |
| Aarwheels: | C-C |
| Operator: | See table |
| Disposition: | Most retired, QNSL units scrapped, 1 preserved |
| Locale: | North America, Canada |
The GE C40-8M is a 6-axle diesel locomotive built by GE Transportation Systems from 1990 to 1994. It is part of the GE Dash 8 Series of freight locomotives, and is often referred to as a Dash 8-40CM.
Mechanically identical to the Dash 8-40CW, the Dash 8-40CM was constructed only for Canadian railways, with a production total of 84 units. It is distinguished from the Dash 8-40CW by the addition of a full-width "Draper Taper" style cowl body, of which they are the last locomotives built with this feature, and the use of a Canadian-specific nose and windshield configuration. The trucks also differ; all units built ride on Dofasco Hi-Ad trucks identical to locomotives built by Montreal Locomotive Works, Bombardier, and Morrison-Knudsen.
The Dash 8-40CM is powered by a 4000hp 7FDL-16 diesel engine driving a GE GMG187 main alternator. The power generated by the main alternator drives six GE 752AG or 752AH direct current traction motors, each with a gear ratio of 83:20 and connected to 40inches wheels which allow the Dash 8-40CM a maximum speed of 70 mph (110 km/h).
Depending on customer options, the Dash 8-40CM carries approximately 5000gal of diesel fuel, 410gal of lubricating oil, and 380gal of coolant. Like most North American diesel locomotives, the Dash 8-40CM uses normal water for cooling. The Dash 8-40CM has a tractive effort rating of 108600lbf at 11mi/h. Overall dimensions for the Dash 8-40CM are 70feet in Length, 15feet in height and 10feet in width.
| bgcolor=c0c090 | Railroad | bgcolor=c0c090 | Quantity | bgcolor=c0c090 | Road numbers | bgcolor=c0c090 | Notes |
|---|---|---|---|---|---|---|---|
| BC Rail | 26 | 4601-4626[1] | To CN with BCOL reporting marks. All have cab bell. 4609 is the last one in service. 4618 preserved at Alberta Railway Museum | ||||
| Canadian National Railway | 55 | 2400-2454[2] | First 30 ordered have high mount cab bell. None are left in service | ||||
| Quebec North Shore and Labrador Railway | 3 | 401-403[3] | Sold to AEX. AEX renumbered them to 100017-100019. Scrapped in 2016 |