Canadian National locomotives 5767 and 2449 5767 EMD SD75I is a diesel-electric locomotive produced by General Motors Electro-Motive Division (EMD). This unit is the same as the EMD SD75M, with 4,300 horsepower (3,200 kW), HTCR-II radial trucks and a 72 feet 4 inches (22.05 m) frame. The only difference between the two models is the cab. The "I" in the model designation stands for Isolated cab, this type of cab is recognized by a seam separating the nose and cab components. This seam is the rubber that dampens vibration and cuts down on noise, because the cab is not attached directly to the frame on the unit. This was the last model that used the "I" designation in the model name, later all units had the isolated cab, but the model designation continued to use the "M". The big buyers were Canadian National with 175 units, the biggest amount (now with 173), Burlington Northern Santa Fe with 26, and Ontario Northland Railway with 6 (now with 5) 2449 The GE Dash 8-40CM is a 6-axle diesel locomotive built by GE Transportation Systems from 1990 to 1994. It is distinguished from the Dash 8-40CW by the addition of a full-width cowl body and the use of a Canada-specific nose and windshield configuration. This locomotive model is sometimes referred to as a C40-8M. Mechanically identical to the Dash 8-40CW, the Dash 8-40CM was constructed only for Canadian railways, with a production total of 84 units. [edit] Technical The Dash 8-40CM is powered by a 4,000-horsepower (3,000 kW) V16 7FDL 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 40-inch (1,000 mm) 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 5000 US gallons (18927 L) of diesel fuel, 410 US gallons (1,552 L) of lubricating oil, and 380 gallons (1,438 L) of coolant. Like most North American diesel locomotives, the Dash 8-40CM uses normal water for cooling. The Dash 8-40CM has a maximum tractive effort of 108,600 lbf (483,000 N) at 11 mph (18 km/h) with the 83:20 gearing. Overall dimensions for the Dash 8-40CM are 70 ft 8 in (21.54 m) in Length, 15 ft 4 in (4.67 m) in height and 10 ft 2 in (3.10 m) in width.

Cutaway between #1 and #2 on a 6B Cummins diesel, 12V engine showing oil passages from the cooler port to the crank and cam, up to the tappet rifle drilling,