EMD SD75I

EMD SD75I

Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD)
Model	SD75I
Total production	207
AAR wheel arr.	C-C
Gauge	4 ft 8½ in (1435 mm)
Prime mover	EMD 16-710-G3
Cylinders	16
Power output	4,300 hp
Career	Canadian National, Burlington Northern Santa Fe, Ontario Northland
Number	CN 5626-5800, BNSF 8276-8301, ONT 2100-2105
Disposition	CN 5658 & 5753 Withdrawn

This unit is the same as the EMD SD75M, with 4300 horsepower, HTCR-II radial trucks and a 72 feet 4 inch frame. The only difference between the two models is the cab. The "I" in the model designation stands for Isolated cad, this type of cab is recognized by a seam separating the nose and cab components. This seam is the rubber that dampens the vibration and cuts down on sound, 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, Burlington Northern Santa Fe with 26, and Ontario Northland with 6.