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 GE Dash 8-40CW, 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 unit, 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.

Technical

The Dash 8-40CM is powered by a List of GE engines, 7FDL-V16 engine, 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 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 of diesel fuel, of lubricating oil, and 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 at . Overall dimensions for the Dash 8-40CM are in Length, in height and in width.

Technical

Original owners

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Further reading